WO2025214193A1 - Single socket hole insertion prevention shutter for multi-country power adaptor - Google Patents

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-insert protection door for multinational power converters Technical Field

The present invention relates to the technical field of power converters, and in particular to an anti-single-insertion protection door for multi-national power converters.

Background Art

Because plug and socket specifications vary from country to country, they are not universally compatible. If you need to plug a plug into an outlet that doesn't match the specifications, you'll need a power converter. A power converter is a tool that connects your device to the intended outlet, then plugs the intended plug into the matching socket on the converter. The advent of power converters has made life more convenient, especially when traveling internationally, as there's no need to worry about the inconvenience of having your electronic device plug mismatched with the local outlet.

However, even when a plug or other object is inserted into only one of the power converter's receptacles, the circuit remains conductive. For example, if a child inserts a conductive object into the power converter's receptacle while playing with it, there's a risk of electric shock, making it unsafe. Therefore, existing power converters incorporate safety door protection structures. However, due to design limitations, the door can become stuck or unable to reset during use, resulting in a poor safety door protection function and an inability to effectively protect consumers' electrical safety.

Summary of the Invention

In response to the above-mentioned shortcomings, the purpose of the present invention is to provide an anti-single-insert protection door for a multi-national power converter. During normal use, the first protection door and the second protection door can maintain movement in a straight line and in the same direction to prevent the safety door from getting stuck or unable to reset, so that the first protection door and the second protection door can play a better safety protection role.

The technical solution adopted by the present invention to achieve the above-mentioned object is:

A single-insert protection door for a multi-country power converter, characterized by comprising a main body cover, a bracket matching the main body cover, a first protection door mounted on the bracket, a second protection door mounted on the bracket, and a spring assembly disposed 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.

As a further improvement of the present invention, the rear end of the first protection door and the front end of the second protection door contact and interfere with each other.

As a further improvement of the present invention, a sliding column penetrating the second protection door is protruded from both sides of the rear end of the first protection door.

As a further improvement of the present invention, a sliding column penetrating the first protective door is protruded from both sides of the front end of the second protective door.

As a further improvement of the present invention, the first protective door is in an overall "X" shape, and a through hole extending downward and concave is provided in the middle of the first protective door.

As a further improvement of the present invention, a front inclined limiting guide surface extending obliquely from the inner lower part to the outer upper part is respectively formed on both sides of the rear end of the first protective door.

As a further improvement of the present invention, at least one front limit block is protruded from the side edge of the middle portion of the upper surface of the bracket.

As a further improvement of the present invention, the second protective 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 protective door.

As a further improvement of the present invention, a rear inclined limiting guide surface extending obliquely from the inner lower part to the outer upper part is respectively formed on the lower surface of both sides of the second protective door.

As a further improvement of the present invention, 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.

As a further improvement of the present invention, a limiting platform is further formed at the front end of the second protective door and can be pressed against the front end of the upper surface of the bracket.

As a further improvement of the present invention, a rear lower guide block is symmetrically provided on both sides of the rear end of the upper surface of the bracket, and a rear lower guide slope is formed on the rear lower guide block and extends obliquely from the upper rear end of the upper surface of the bracket to the lower middle part of the bracket.

As a further improvement of the present invention, a first connecting column is respectively protruded from 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 from both 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.

As a further improvement of the present invention, 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.

As a further improvement of the present invention, the front tilting movable guide slope and the rear tilting movable guide slope are both in the shape of an upwardly concave arc surface.

As a further improvement of the present invention, a combined jack group is provided on the upper cover of the main body, and 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, 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, and the first jack and the second jack are both Located on the left side of the twelfth socket, the fifth socket and the sixth socket are both located on the right side of the twelfth socket, the eighth socket and the ninth socket are both located on the left side of the seventh socket, and the tenth socket and the eleventh socket are both located on the right side of the seventh socket; the second socket, the fifth socket and the seventh socket are combined to form an American standard socket, the first socket, the twelfth socket and the sixth socket are combined to form an Italian socket, the third socket, the eighth socket and the eleventh socket are combined to form a British standard socket, and the fourth socket, the ninth socket and the tenth socket are combined to form Chinese standard and Australian standard sockets.

As a further improvement of the present invention, American standard pin guide slopes are respectively formed on both sides of the through hole of the first protective door, which correspond to the second and fifth sockets and extend obliquely from the upper front end to the lower rear end. The outer side of the American standard pin guide slope is formed with an Italian standard pin guide slope, which 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 socket of the first protective door is also formed with an American standard ground pin guide slope, which corresponds to the seventh socket and extends obliquely from the upper front end to the lower rear end.

As a further improvement of the present invention, Chinese and Australian standard pin guide slopes are respectively formed on both sides of the through groove of the second protective door, which correspond to the ninth and tenth sockets and extend obliquely from the upper outer front end to the lower inner rear end. British standard pin guide slopes are formed on the outer sides of the Chinese and Australian standard pin guide slopes, which correspond to the eighth or eleventh socket and extend obliquely from the upper front end to the lower inner rear end.

As a further improvement of the present invention, a limiting column extending upward and capable of pressing against the front end of the upper surface of the bracket is further formed on both sides of the through hole of the first protective door.

As a further improvement of the present invention, the combined jack group also includes a thirteenth jack arranged in the middle of the third jack, a fourteenth jack arranged in the middle of the eighth jack, and a fifteenth jack arranged in the middle of the eleventh jack. The thirteenth jack, the fourteenth jack and the fifteenth jack are combined to form an Indian gauge jack.

As a further improvement of the present invention, 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.

The beneficial effects of the present invention are:

By arranging a spring group between the first protection door and the bracket, and providing a connecting column that passes through the second protection door on the first protection door, when the first protection door is moved by the force, the spring group gives the first protection door an elastic reset force to reset it. When the second protection door is moved by the force, the second protection door pushes the first protection door through the connecting column to squeeze the spring group. The first protection door and the second protection door keep moving in the same direction, thereby preventing the second protection door from moving left and right or getting stuck and unable to reset. In addition, the spring group gives the first protection door an elastic reset force, and the first protection door drives the second protection door to reset, so that the first protection door and the second protection door can play a better safety protection role.

The above is an overview of the technical solution of the invention. The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an overall schematic diagram of Example 1;

FIG2 is a front view of the first embodiment;

FIG3 is an exploded view of Example 1;

FIG4 is a schematic diagram of the structure of the embodiment 1 after the main body cover is removed;

FIG5 is a schematic structural diagram of the bracket in Example 1;

FIG6 is a schematic structural diagram of the first protective door in Example 1;

FIG7 is a bottom view of the first protective door in Example 1;

FIG8 is a rear view of the first protective door in Example 1;

FIG9 is a schematic structural diagram of the second protective door in Example 1;

FIG10 is a bottom view of the second protective door in Example 1;

FIG11 is a rear view of the second protective door in Example 1;

FIG12 is a schematic diagram of the external power pin insertion in Example 1;

FIG13 is a schematic diagram of the internal structure of the external power pin inserted in Example 1;

FIG14 is an overall schematic diagram of Example 2;

FIG15 is an exploded view of Example 2;

FIG16 is a schematic diagram of the structure of the second embodiment after removing the main body cover;

FIG17 is a schematic structural diagram of the bracket in Example 2;

FIG18 is a schematic structural diagram of the first protective door in Example 2;

FIG19 is a bottom view of the first protective door in Example 2;

FIG20 is a rear view of the first protective door in Example 2;

FIG21 is a schematic structural diagram of the second protective door in Example 2;

FIG22 is a bottom view of the second protective door in Example 2;

FIG23 is a rear view of the second protective door in Example 2;

In the figure: 1. Main body 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 stop block; 22. Rear stop block; 23. Second connecting column; 24. Ground wire clearance groove; 241. First guide arc surface; 25. Rear lower guide block; 251. Rear lower guide inclined surface; 3 , first protective door; 31. Sliding column; 32. Through hole; 321. Indian standard ground wire clearance hole; 33. Front tilt limit guide surface; 34. First connecting column; 35. Front tilt movable guide slope; 36. US standard plug guide slope; 37. Italian standard plug guide slope; 38. US standard ground wire pin guide slope; 39. Limit column; 4. Second protective door; 41. Through slot; 42. Rear tilt limit guide surface; 43. Rear tilt movable guide slope; 44. Chinese standard and Australian standard plug guide slope; 45. UK standard plug guide slope; 46. Limit platform; 47. Indian standard plug guide slope; 5. Spring group; 51. First spring; 52. Second spring.

DETAILED DESCRIPTION

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 therefore cannot be understood as limiting the present invention.

Furthermore, 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 number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

Example 1

Referring to Figures 1 to 13, an embodiment of the present invention provides an anti-single-insertion protection door for a multi-national power converter, comprising a main body cover 1, a bracket 2 matching the main body 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 assembly 5 disposed 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 contact and interfere with each other, and the first protection door 3 and the second protection door 4 move in the same direction.

Preferably, the rear end of the first protection door 3 and the front end of the second protection door 4 contact and interfere with each other.

Regarding the specific manner in which the rear end of the first protection door and the front end of the second protection door are matched and closely arranged, a sliding column 31 penetrating the second protection door 4 is protruded from both sides of the rear end of the first protection door 3 .

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 that passes through the second protection door 4, when the first protection door 3 is subjected to a force and moves, the spring group 5 gives the first protection door 3 an elastic reset force to reset it. When the second protection door 4 is subjected to a force and moves, the second protection door 4 pushes the first protection door 3 to squeeze the spring group 5 through the sliding column 31 arranged on the first protection door 3, and the first protection door 3 and the second protection door 4 keep moving in the same direction, thereby preventing the second protection door 4 from moving left and right, falling off, or getting stuck and unable to reset, etc., and the spring group 5 gives the first protection door 3 an elastic reset force, 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.

A sliding column can also be set on the second protective door 4, that is, a sliding column that passes through the first protective door 3 is protruded on both sides of the front end of the second protective door 4. When the second protective door 4 is moved by the force, the second protective door 4 pushes the first protective door 3 to squeeze the spring group 5 through the sliding column set thereon, and the first protective door 3 and the second protective door 4 keep moving in the same direction, thereby preventing the second protective door 4 from moving left and right or falling off, and the spring group 5 gives the first protective door 3 an elastic reset force, 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.

It is also possible that no sliding column is provided between the first protection door 3 and the second protection door 4. The second protection door 4 is directly in close contact with the first protection door 3 to push the first protection door 3 and squeeze the spring group 5, so that the first protection door 3 and the second protection door 4 move in the same direction.

As for the specific structural setting of the first protective door 3, as shown in Figures 3 to 4 and Figures 6 to 8, the first protective door 3 is in the shape of a "F" as a whole, and a downward-extending recessed through hole 32 is provided in the middle of the first protective door 3, so that the externally inserted power pin can pass through the through hole 32 and connect with the conductive component in the power converter to achieve the conduction of the power pin ground wire; a front inclined limit guide surface 33 extending obliquely from the inner lower part to the outer upper part is formed on the lower surface of both sides of the rear end of the first protective door 3, and at least one front limit block 21 is protruded from the side edge of the middle part of the upper surface of the bracket 2. Preferably, a front limit block 21 extending toward the middle of the bracket 2 is respectively provided on both side walls of the middle part of the upper surface 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 inserted side of the first protective door 3 drives the first protective door 3 to flip downward as a whole under the guidance of the front inclined limit guide surface 33, so that the inserted side of the first protective door 3 is pressed against the front limit block 21, so that the first protective door 3 cannot move, thereby preventing a single pin or sharp object from being inserted alone, and further preventing electric shock caused by children playing with the power converter, thereby improving safety.

As for the specific structural setting of the second protective door 4, as shown in Figures 3 to 4 and Figures 9 to 11, the second protective door 4 is in a concave or T-shaped shape as a whole, and a through groove 41 is provided in the middle of the second protective door 4. The through groove 41 is used to make way for the lower end of the through hole 32 of the first protective door 3, and the power pin inserted from the outside is connected to the conductive component in the power converter through the through groove 41 to achieve the conduction of the power pin ground wire; a rear inclined limit guide surface 42 extending obliquely from the inner lower part to the outer upper part is formed on the lower surface of both sides of the second protective door 4; a rear end of the upper surface of the bracket 2 is formed with a guide surface 42 which is connected to the lower end of the second protective door 4 At least one rear stopper 22 of matching shape allows for the insertion of a single pin or sharp object into the corresponding position of the second protective door 4. The inserted side of the second protective door 4, guided by the rear inclined stopper guide surface 42, causes the second protective door 4 to tilt downward as a whole. Driven by the connecting post 31, the first protective door 3 is simultaneously tilted sideways, causing the first protective door 3 to press against the front stopper 21, preventing the first and second protective doors 3 and 4 from moving. This prevents the insertion of a single pin or sharp object, thereby preventing electric shock from children playing with the power converter and further improving safety. If a single pin or sharp object is inserted between the first and second protective doors 3 and 4, the second protective door 4 presses against the rear stopper 22, preventing the second protective door 4 from moving. The first protective door 3 presses against the front stopper 21, preventing the first and second protective doors 3 and 4 from moving. This prevents the insertion of a single pin or sharp object, thereby preventing electric shock from children playing with the power converter and further improving safety.

In order to prevent the second protective door 4 from moving upward excessively, as shown in Figures 9 to 11, a limit platform 46 is further formed at the front end of the second protective door 4, which can be pressed against the front end of the upper surface of the bracket 2. When the external power pin is normally pressed against the second protective door 4, the second protective door 4 drives the first protective door 3 to move upward until the limit platform 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, resulting in an inability to reset or damage to other structures.

In order to further improve the efficiency of moving the first protection door 3 when the second protection door 4 is inserted by an external power pin, as shown in Figure 5, a rear lower guide block 25 is symmetrically provided at the rear ends of both sides of the upper surface of the bracket 2. The rear lower guide block 25 is also formed with a rear lower guide inclined surface 251 extending obliquely from the upper rear end of the upper surface of the bracket 2 to the lower middle part of the bracket 2. 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 be pressed down on the rear lower guide inclined surface 251, and moves toward the front end of the bracket 2 under the inclined guiding action of the rear lower guide inclined surface 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 safety.

As for the specific manner in which the spring group 5 acts on the first protective door 3, as shown in Figures 3 to 6, a first connecting post 34 is respectively provided on both sides of the front end of the first protective door 3, and a second connecting post 23 extending toward the middle of the bracket 2 is respectively provided on both side walls of 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 posts 34 and one of the second connecting posts 23, and a second spring 52 connected between the other first connecting post 34 and the other second connecting post 23. When the external power pin is normally inserted, the first protective door 3 or the second protective door 4 is subjected to a forward force to squeeze the first spring 51 and the second spring 52. After the power pin is unplugged, the first protective door 3 or the second protective door 4 is reset under the elastic restoring force of the first spring 51 and the second spring 52 to facilitate the next use. The first spring 51 and the second spring 52 are respectively provided on both sides of the first protective door 3, so that the force on the first protective door 3 is evenly distributed, reducing the problem of the first protective door 3 tipping over and shifting due to uneven force, thereby further improving safety.

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 clearance groove 24 is formed in the middle of the bracket 2, and the two sides of the ground wire clearance groove 24 are first guide arc surfaces 241 extending respectively toward the front and rear ends of the bracket. The structural design of the arc surface makes it easier for the first protection door 3 and the second protection door 4 sliding thereon to slide and slide more smoothly; a front inclined movable guide slope 35 matching the ground wire clearance groove 24 is formed on both sides of the middle part of the lower surface of the first protection door 3, and a rear inclined movable guide slope 43 matching the ground wire clearance groove 24 is formed on both sides of the middle part of the lower surface of the second protection door 4. Preferably, the front tilt movable guide slope 35 and the rear tilt movable guide slope 43 are both upwardly concave arc surfaces, and the two groups match each other, which is conducive to the cooperation between the various components, so that when the first protection door 3 slides on the ground wire give way groove 24, the two groups of front tilt movable guide slopes 35 respectively guide the first protection door 3 to slide in the middle of both sides of the ground wire give way groove 24, thereby preventing the first protection door 3 from shifting and falling off during the sliding process, and when the second protection door 4 slides on the ground wire give way groove 24, the two groups of rear tilt movable guide slopes 43 respectively guide the second protection door 4 to slide in the middle of both sides of the ground wire give way groove 24, thereby preventing the second protection door 4 from shifting and falling off during the sliding process. The front inclined movable guide slope 35 and the rear inclined movable guide slope 43 cooperate with the ground wire yielding groove 24, so that when the first protection door 3 and the second protection door 4 are moved by the force, they can provide a straight line conductor effect, further improving the accuracy of the movement of the first protection door 3 and the second protection door 4 and further improving safety.

As for the specific method of inserting the external power pin into the power converter, as shown in Figures 1 to 3, a combined jack group is provided on the main body cover 1, and 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, wherein 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 top, the fourth jack 104 is formed at the upper end of the twelfth jack 112, and the first jack 101 and The second sockets 102 are all located on the left side of the twelfth socket 112, the fifth socket 105 and the sixth socket 106 are both located on the right side of the twelfth socket 112, the eighth socket 108 and the ninth socket 109 are both located on the left side of the seventh socket 107, and the tenth socket 110 and the eleventh socket 111 are both located on the right side of the seventh socket 107; the second socket 102, the fifth socket 105 and the seventh socket 107 are combined to form a US standard socket, the first socket 101, the twelfth socket 112 and the sixth socket 106 are combined to form an Italian socket, the third socket 103, the eighth socket 108 and the eleventh socket 111 are combined to form a British standard socket, and the fourth socket 104, the ninth socket 109 and the tenth socket 110 are combined to form Chinese standard and Australian standard sockets. This embodiment is designed with a special combined socket group structure on the main body cover 1, and is equipped with multi-national standard pins, which can be used for conversion between multi-national plugs and sockets, greatly expanding its scope of use.

As for the specific method of inserting the external pins into the first protective door 3, as shown in Figures 3 and 6, on both sides of the through hole 32 of the first protective door 3, there are respectively formed US-standard pin guide slopes 36 that correspond to the second socket 102 and the fifth socket 105 and extend obliquely from the upper front end to the lower rear end. The outer side of the US-standard pin guide slope 38 is formed with an Italian-standard pin guide slope 37 that corresponds to the first socket 101 or the sixth socket 106 and extends obliquely from the upper front end to the lower rear end. The lower end of the socket of the first protective door 3 is also formed with a US-standard ground pin guide slope 38 that corresponds to the seventh socket 107 and extends obliquely from the upper front end to the lower rear end. When an external US-standard plug is inserted into the main body cover 1, the live wire of the US-standard plug passes through the second jack 102 and presses against the US-standard plug guide slope 38 on the left, the neutral wire passes through the fifth jack 105 and presses against the US-standard plug guide slope 36 on the right, and the ground wire passes through the seventh jack 107 and presses against the US-standard ground wire plug guide slope 38. Under the guidance of the US-standard plug guide slope 36 and the US-standard ground wire plug guide slope 38, the US-standard plug pushes the first protective door 3 toward the spring group 5, so that the US-standard plug is connected to the conductive component of the power converter set in the bracket 2, thereby realizing the conversion of the plug. When the external Italian standard plug is inserted into the main body cover 1, the live wire of the Italian standard plug passes through the first jack 101 and presses against the Italian standard plug guide slope 37 on the left, the neutral wire passes through the sixth jack 106 and presses against the Italian standard plug guide slope 37 on the right, and the ground wire passes through the twelfth jack 112. Under the guidance of the Italian standard plug guide slope 37, the Italian standard plug pushes the first protective door 3 toward the spring group 5, so that the Italian standard plug is connected to the conductive component of the power converter set in the bracket 2, thereby realizing the conversion of the plug.

As for the specific method of inserting the external pins into the second protective door 4, as shown in Figures 3 and 9, on both sides of the through slot 41 of the second protective door 4, there are respectively formed Chinese and Australian standard pin guide slopes 44 that correspond to and match the ninth socket 109 and the tenth socket 110 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 44, there is formed a British standard pin guide slope 45 that corresponds to and matches the eighth socket 108 or the eleventh socket 111 and extends obliquely from the upper front end to the lower inner rear end. When an external national standard plug or a European plug is inserted into the main body cover 1, the live wire of the national standard plug or the European plug passes through the ninth socket 109 and presses against the Chinese and Australian standard plug guide slope 44 on the left, the neutral wire passes through the tenth socket 110 and presses against the Chinese and Australian standard plug guide slope 44 on the right, and the ground wire passes through the fourth socket 104. Under the guidance of the Chinese and Australian standard plug guide slope 44, the national standard plug or the European plug pushes the second protective door 4 toward the spring group 5, and the second protective door 4 drives the first protective door 3 to move toward the front end, so that the national standard plug or the European plug is connected to the conductive component of the power converter set in the bracket 2, thereby realizing the conversion of the plug. When an external British standard plug is inserted into the main body cover 1, the live wire of the British standard plug passes through the eighth socket 108 and presses against the British standard plug guide slope 45 on the left, the neutral wire passes through the eleventh socket 111 and presses against the British standard plug guide slope 45 on the right, and the ground wire passes through the third socket 103. Under the guidance of the British standard plug guide slope 45, the British standard plug pushes the second protective door 4 toward the spring assembly 5, and the second protective door 4 drives the first protective door 3 to move forward, so that the British standard plug is connected to the conductive component of the power converter set in the bracket 2, thereby realizing the conversion of the plug.

Example 2

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

As shown in Figures 14 to 23, the main difference between Example 2 and Example 1 is that this embodiment further includes upwardly extending limit posts 39 formed on both sides of the through hole 32 of the first protective door 3, which can press against the front end of the upper surface of the bracket 2, rather than an integral limit platform 46 at the front end of the second protective door 4. When the external power pin is normally pressed against 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 upward, until the limit posts 39 of the first protective door 3 press against the front end of the upper surface of the bracket 2, at which point the first protective door 3 stops moving upward. This effectively prevents the first protective door 3 from moving upward excessively, resulting in failure to reset or damage to other structures.

In order to further improve the practicality of the anti-single-insert protection door, as shown in Figures 14 and 15, the combined socket group also 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 combined socket group structure design, combined with the pins of multiple national standards, can be used for conversion between plugs and sockets of multiple countries, further improving its scope of use.

As for the specific method of inserting the external Indian standard plug into the anti-single-insertion protection door, as shown in Figures 18 to 23, an Indian standard ground wire clearance hole 321 matching the thirteenth socket 113 is formed in the middle of the through hole 32, and an Indian standard plug pin guide slope 47 is formed between the British standard plug pin guide slope 45 and the Chinese standard and Australian standard plug pin guide slope 44, which respectively matches the fourteenth socket 114 and the fifteenth socket 115 and extends obliquely from the upper outer front end to the lower inner rear end. When the external Indian gauge plug is inserted into the main body cover 1, the live wire of the Indian gauge plug passes through the fifteenth socket 115 and presses against the Indian gauge plug guide slope 47 on the left, the neutral wire passes through the fourteenth socket 114 and presses against the Indian gauge plug guide slope 47 on the right, and the ground wire passes through the thirteenth socket 113 and enters the Indian gauge ground wire clearance hole 321. Under the guidance of the Indian gauge plug guide slope 47, the external Indian gauge plug pushes the first protective door 3 and the second protective door 4 toward the spring group 5, so that the Indian gauge plug is connected to the conductive component of the power converter set in the bracket 2, thereby realizing the pin conversion.

It should be noted that the single-insert protection door for a multinational power converter disclosed in this invention is an improvement to its specific structure, and the specific control method is not the innovation of this invention. The springs, US standard plugs, UK standard plugs, national standard plugs, Italian standard plugs, European standard plugs, and other components involved in this invention can be commonly used standard parts or components known to those skilled in the art. Their structure, principles, and control methods are all known to those skilled in the art through technical manuals or routine experimental methods.

The above is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present invention are within the scope of protection of the present invention.

Claims (21)

A single-insert protection door for a multi-country power converter, characterized by comprising a main body cover, a bracket matching the main body cover, a first protection door mounted on the bracket, a second protection door mounted on the bracket, and a spring assembly disposed 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. The anti-single-insertion protection door for a multi-country power converter according to claim 1 is 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. The anti-single-insertion protection door for a multi-country power converter according to claim 1 is characterized in that a sliding column is protruded from both sides of the rear end of the first protection door and passes through the second protection door. The anti-single-insert protection door for a multi-country power converter according to claim 1 is characterized in that a sliding column is protruded from both sides of the front end of the second protection door and passes through the first protection door. The anti-single-insert protection door for a multi-country power converter according to claim 1 is characterized in that the first protection door is in an overall "X" shape, and a through hole extending downward and concave is opened in the middle of the first protection door. The anti-single-insertion protection door for a multi-country power converter according to claim 5 is characterized in that: a front inclined limiting guide surface extending obliquely from the inner lower part to the outer upper part is formed on both sides of the rear end of the first protection door. The anti-single-insertion protective door for a multi-national power converter according to claim 5 is characterized in that at least one front limit block is protruded from the side edge of the middle portion of the upper surface of the bracket. The anti-single-insert protection door for a multi-country power converter according to claim 5 is characterized in that the second protection door is generally concave or T-shaped, and a through groove is provided in the middle of the second protection door. The anti-single-insertion protection door for a multi-country power converter according to claim 8 is characterized in that a rear-inclined limiting guide surface extending obliquely from the inner lower part to the outer upper part is formed on the lower surface of both sides of the second protection door. The anti-single-insertion protective door for a multi-national power converter according to claim 8 is characterized in that at least one rear limit 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. The anti-single-insert protection door for a multi-country power converter according to claim 8 is characterized in that a limit platform is further formed at the front end of the second protection door and can be pressed against the front end of the upper surface of the bracket. The anti-single-insert protection door for a multi-country power converter according to claim 1 is 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, and a rear lower guide slope is also formed on the rear lower guide block and extends obliquely from the upper rear end of the upper surface of the bracket toward the lower middle part of the bracket. The anti-single-insert protection door for a multi-country power converter according to claim 1 is characterized in that: a first connecting post is respectively provided on both sides of the front end of the first protection door, and a second connecting post is respectively provided on the two side walls of the front end of the upper surface of the bracket, extending toward the middle of the bracket; and the spring assembly includes a first spring connected between one of the first connecting posts and one of the second connecting posts, and a second spring connected between another first connecting post and another second connecting post. The anti-single-insert protection door for a multi-country power converter according to claim 1 is 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 toward the front and rear ends of the bracket respectively; 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 protection 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 protection door. The anti-single-insertion protective door for a multi-national power converter according to claim 14 is characterized in that the front tilting movable guide slope and the rear tilting movable guide slope are both in the shape of an upwardly concave arc surface. The anti-single-insert protection door for a multi-country power converter according to claim 8 is characterized in that: a modular jack group is provided on the upper cover of the main body, and the modular 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, 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, and the 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 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. The anti-single-insert protection door for a multi-country power converter according to claim 16 is characterized in that: US-standard pin guide slopes are respectively formed on both sides of the through hole of the first protection door, which correspond to the second and fifth sockets and extend obliquely from the upper front end to the lower rear end as a whole; an Italian-standard pin guide slope is formed on the outer side of the US-standard pin guide slope, which corresponds to the first or sixth socket and extends obliquely from the upper front end to the lower rear end as a whole; and a US-standard ground pin guide slope is also formed at the lower end of the through hole of the first protection door, which corresponds to the seventh socket and extends obliquely from the upper front end to the lower rear end as a whole. The anti-single-insert protection door for a multi-country power converter according to claim 16 is characterized in that: Chinese and Australian standard plug pin guide slopes are respectively formed on both sides of the through slot of the second protection door, which correspond to the ninth and tenth sockets and extend obliquely from the upper outer front end to the lower inner rear end as a whole; and British standard plug pin guide slopes are formed on the outer sides of the Chinese and Australian standard plug pin guide slopes, which correspond to the eighth or eleventh socket and extend obliquely from the upper front end to the lower inner rear end as a whole. The anti-single-insert protection door for a multi-country power converter according to claim 5 is characterized in that: a limiting column extending upward and capable of pressing against the front end of the upper surface of the bracket is further formed on both sides of the through hole of the first protection door. The anti-single-insert protection door for a multi-national power converter according to claim 16 is characterized in that: the combined socket group further 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, and the thirteenth socket, the fourteenth socket and the fifteenth socket are combined to form an Indian standard socket. The anti-single-insert protection door for a multi-national power converter according to claim 20 is 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 further 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.