TWM666195U - An overload protection device for multinational power converters - Google Patents

Abstract

The invention discloses an overload prevention device for a multinational power converter, comprising a main body upper cover, a main body lower cover, a US standard plug assembly, and a British standard plug assembly. The main body upper cover is formed with a socket hole, and further comprises a fuse frame detachably mounted in the main body lower cover, a fuse tube mounted in the fuse frame, a lower conductive sheet, and an upper conductive sheet; the fuse frame is formed with a socket hole. The fuse is installed in the mounting frame; the lower conductive sheet includes a lower conductive clamping part that can clamp the lower part of the fuse for conduction; the British standard plug assembly and the American standard plug assembly are respectively plugged and connected with the lower conductive sheet; the upper conductive sheet includes an upper conductive clamping part that can clamp the upper part of the fuse for conduction; the upper conductive sheet is electrically connected to the socket hole. The new type is easy to pull out and install, has a stable structure after installation, smooth conduction and high safety, effectively protects the circuit of the power converter, prevents circuit overload, and can effectively prevent people from accidentally unplugging during use, and the product volume can also be smaller.

Description

An overload protection device for multinational power converters

The present invention relates to the field of power converter technology, and in particular to an anti-overload device for multinational power converters.

Because the socket standards of each country are not completely unified, one type of plug cannot be used all over the world. When you go to different countries, you need to configure the corresponding plugs of that country to power the electronic devices you carry with you. If you go to several countries at a time, consumers have to bring power plugs for several countries, which brings great trouble to people who travel across countries or on business trips.

Therefore, power converters that are applicable to socket standards of different countries are widely available on the market. In order to improve the safety performance of these power converters, some power converters are equipped with fuses. When the current reaches a certain value, the fuse will melt, thereby protecting the circuit.

The conventional power converter on the market is configured with a socket on the outer shell, and a conductive terminal is provided on the side wall of the socket to electrically contact the fuse. During use, leakage is likely to occur, resulting in electric shock, causing safety hazards. At the same time, it also takes up a lot of product space, which is not conducive to miniaturization of the product.

In addition, during the use of the power converter, since some countries do not have safety regulations for the outer edge size of the socket, there are many sockets on the market with relatively small edge size distances. When the plug is pushed out for use, if the fuse is not completely placed within the contact surface between the plug and the socket, there is a risk that the fuse will be pulled out, resulting in safety hazards such as leakage and electric shock. In particular, if a child pulls out the fuse in a naughty manner during use, there will be a big safety problem, and the safety of use is low.

In view of the above shortcomings, the purpose of this new model is to provide an anti-overload device for multinational power converters, which is easy to unplug and install, has a stable structure after installation, smooth conduction and high safety, effectively protects the circuit of the power converter to prevent circuit overload, and can also effectively prevent people from accidentally unplugging during use. At the same time, the product volume can be made smaller.

The technical solution adopted by this new model to achieve the above purpose is:

An overload prevention device for a multinational power converter includes a main body upper cover, a main body lower cover covering the main body upper cover, an American standard plug assembly arranged between the main body upper cover and the main body lower cover, and a British standard plug assembly arranged between the main body upper cover and the main body lower cover, wherein the main body upper cover is formed with at least one socket hole, and further includes a detachable A fuse frame is installed in the lower cover of the main body, a fuse installed in the fuse frame, a lower conductive sheet fixed on the lower cover of the main body, and an upper conductive sheet fixed between the upper cover of the main body and the lower cover of the main body; a mounting frame is formed in the fuse frame, and the fuse is installed in the mounting frame; the lower conductive sheet includes a conductive sheet that can clamp the lower part of the fuse The British standard plug assembly and the American standard plug assembly are respectively plugged and connected with the lower conductive piece; the upper conductive piece includes an upper conductive clamping part that can clamp the upper part of the fuse for conduction; the upper conductive piece is electrically connected to the socket hole; a mounting cover is formed on the lower end surface of the fuse frame, and at least one mounting limit portion is extended outward from the side of the mounting cover, and a pull-out guide surface extending obliquely outward and downward from the mounting plate is formed on the upper end surface of the mounting limit portion; a fuse plug hole matching the mounting cover and the mounting limit portion is provided on the lower cover of the main body, and at least one pull-out clearance groove is recessed on the side of the fuse plug hole; the mounting frame is rectangular or arc-shaped as a whole.

As a further improvement of the present invention, the lower conductive sheet further includes a lower conductive connecting sheet, a US standard clamping portion arranged at one end of the lower conductive connecting sheet and capable of plugging and electrically connecting with the US standard plug assembly, and a British standard clamping portion arranged at the other end of the lower conductive connecting sheet and capable of plugging and electrically connecting with the British standard plug assembly; the lower conductive clamping portion is arranged at the other end of the lower conductive connecting sheet.

As a further improvement of the present invention, the lower conductive clamping part includes a lower conductive clamping arm that clamps the two sides of the lower part of the fuse respectively, and the upper end of the lower conductive clamping arm is formed with a lower conductive upper guide block that extends obliquely toward the external upper end, and the lower end of the lower conductive clamping arm is formed with a lower conductive lower guide block that extends obliquely toward the external lower end.

As a further improvement of the present invention, the upper conductive sheet also includes an upper conductive connecting sheet in the shape of "∟", a socket hole connecting clamping portion disposed at one end of the upper conductive connecting sheet and electrically connected to the socket hole; the upper conductive clamping portion is disposed at the other end of the upper conductive connecting sheet.

As a further improvement of the present invention, the upper conductive clamping portion includes an upper conductive clamping arm that clamps the upper two sides of the fuse and extends downward as a whole, and the lower part of the upper conductive clamping arm is formed with at least one upper conductive guide block that extends obliquely downward toward the outside.

As a further improvement of the present invention, at least one set of symmetrically arranged inner limit bumps are provided on the inner wall of the mounting frame, and the side of the fuse is pressed against the inner limit bumps; and lower limit bumps are provided at both ends of the lower outer side of the mounting frame, and the lower end of the fuse is pressed against the lower limit bumps.

As a further improvement of the present invention, a US standard live wire conducting piece is provided on the US standard plug assembly, and the US standard live wire conducting piece is inserted into the US standard clamping part when the US standard plug assembly is pushed out of the lower cover of the main body.

As a further improvement of the present invention, a British standard live wire conducting piece is provided on the British standard plug assembly, and the British standard live wire conducting piece is inserted into the British standard clamping part when the British standard plug assembly is pushed out of the lower cover of the main body.

The beneficial effects of this new utility model are:

The fuse holder is used to protect and limit the fuse. After the fuse holder and the fuse are installed in the power converter, the upper conductive clamping part in the upper conductive sheet clamps the upper part of the fuse, so that one end of the fuse is connected to the live wire at one end of the socket hole of the power converter; the lower conductive clamping part in the lower conductive sheet clamps the lower side of the fuse, so that the other end of the fuse is connected to the live wire of the US standard plug assembly and the British standard plug assembly in the power converter. The combination of the two makes the electric shock protection device conduct smoothly and highly safe, effectively protecting the circuit of the power converter and preventing circuit overload.

The fuse is installed correspondingly on the fuse socket, and cooperates with the removal hole on the side of the fuse socket, making it more convenient to remove and install the fuse.

The above is an overview of the new technical solution. The following is a further explanation of the new technology with the help of the attached diagrams and specific implementation methods.

1: Main body cover

2: Main body bottom cover

3: US standard plug assembly

4: British standard plug assembly

11: Socket hole

5: Safety rack

6: Insurance

7: Lower conductive sheet

8: Upper conductive sheet

51: Mounting frame

71: Lower conductive clamping part

72: Lower conductive connection piece

73: American standard clamping part

74: British standard clamping part

711: Lower conductive clamping arm

712: Bottom conduction upper guide block

713: Lower conduction lower guide block

82: Upper conductive connection piece

83: Socket hole connection clamping part

81: Upper conductive clamping part

811: Upper conductive clamping arm

812: Upper conduction guide block

52: Installation cover

521: Install the limiter

522: Pull out the guide surface

21: Fuse socket

22: Pull out the give way slot

511: Inner limit bump

512: Lower limit bump

31: US standard live wire conduction sheet

41: British standard live wire conduction sheet

Figure 1 is a schematic diagram of the structure of the new fuse, fuse frame, upper conductive sheet, and lower conductive sheet.

Figure 2 is a schematic diagram of the structure of the new upper conductive sheet.

Figure 3 is a schematic diagram of the structure of the new lower conductive sheet.

Figure 4 is a schematic diagram of the structure of the new type of fuse.

Figure 5 is a schematic diagram of the structure of the new fuse.

Figure 6 is a schematic diagram of the back of the new power converter.

Figure 7 is a schematic diagram of the back of the new power converter with the fuse and fuse holder removed.

Figure 8 is a front view of the new power converter.

Figure 9 is a schematic diagram of the internal structure of the new power converter.

Figure 10 is a schematic diagram of the connection between the new conductive spring and the upper conductive sheet.

Figure 11 is a schematic diagram of the new US-standard pin assembly and the lower conductive sheet.

Figure 12 is a schematic diagram of the new US-standard pin assembly being inserted into the lower conductive sheet.

Figure 13 is a schematic diagram of the new British standard pin assembly and the lower conductive sheet.

Figure 14 is a schematic diagram of the new British standard plug assembly being inserted into the lower conductive sheet.

Figure 15 is a schematic diagram of the second embodiment of the present invention.

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose, the specific implementation of the present invention is described in detail below in conjunction with the attached figures 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" and the like indicate positions or location relationships based on the positions or location relationships shown in the attached drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this new type, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

In this invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in this invention can be understood according to the specific circumstances.

Embodiment 1

Referring to Fig. 1 to Fig. 14, the present embodiment provides an overload prevention device for a multinational power converter, comprising a main body upper cover 1, a main body lower cover 2 covering the main body upper cover 1, a US standard plug assembly 3 disposed between the main body upper cover 1 and the main body lower cover 2, and a British standard plug assembly 4 disposed between the main body upper cover 1 and the main body lower cover 2, wherein the main body upper cover 1 is formed with a socket hole 11, and further comprising a fuse frame 5 detachably mounted in the main body lower cover 2, a fuse 6 mounted in the fuse frame 5, and a U.S. standard plug assembly 3 disposed between the main body upper cover 1 and the main body lower cover 2. A lower conductive sheet 7 is formed on the main body, and an upper conductive sheet 8 is fixed between the main body upper cover 1 and the main body lower cover 2; a mounting frame 51 is formed in the fuse frame 5, and the fuse 6 is mounted in the mounting frame 51; the lower conductive sheet 7 includes a lower conductive clamping portion 71 that can clamp the lower part of the fuse 6 for conduction; the British standard plug assembly 4 and the American standard plug assembly 3 are respectively plugged and connected with the lower conductive sheet 7; the upper conductive sheet 8 includes an upper conductive clamping portion 81 that can clamp the upper part of the fuse 6 for conduction; the upper conductive sheet 8 is electrically connected to the socket hole 11.

The fuse frame 5 is used to fix the position of the fuse 6 to prevent the fuse 6 from shifting in the power converter, and is more convenient for the upper conductive sheet 8 and the lower conductive sheet 7 to clamp, thereby ensuring that the fuse 6 is connected to the live wire on the socket hole 11 and the live wire between the British standard plug assembly 4 and the American standard plug assembly 3, thereby improving the safety of the power converter. After the fuse frame 5 and the fuse 6 are installed in the power converter through the main body lower cover 2, the upper conductive clamping portion 81 of the upper conductive sheet 8 clamps the upper part of the fuse 6, so that one end of the fuse 6 is electrically connected to the live wire of the multinational plug inserted into the socket hole 11, and the lower conductive clamping portion 71 in the lower conductive sheet 7 clamps the lower part of the fuse 6, so that the other end of the fuse 6 is connected to the live wire plug of the US standard plug assembly 3 and the British standard plug assembly 4. The combination of the two makes the device conduct smoothly and highly safe, effectively protects the circuit in the power converter, prevents circuit overload, and at the same time, the product volume can be made smaller.

As for the specific structural arrangement of the lower conductive sheet 7, as shown in Fig. 1, Fig. 3, Fig. 9, Fig. 11 to Fig. 14, the lower conductive sheet 7 also includes a lower conductive connecting sheet 72, a US-standard clamping portion 73 disposed at one end of the lower conductive connecting sheet 72 and capable of plugging and electrically connecting with the US-standard plug assembly 3, and a British-standard clamping portion 74 disposed at the other end of the lower conductive connecting sheet 72 and capable of plugging and electrically connecting with the British-standard plug assembly 4; the lower conductive clamping portion 71 is disposed at the other end of the lower conductive connecting sheet 72. The lower conductive sheet 7 is an integrated molding structure, thereby ensuring the smoothness of conduction between the components and improving the conduction efficiency. One end of the lower conductive connecting piece 72 extends upward and is connected to the lower end of the lower conductive clamping portion 71, and the other end is formed with a US-standard clamping portion 73 and a British-standard clamping portion 74. When the US-standard plug assembly 3 needs to be used, the US-standard plug assembly 3 only needs to be pushed out of the main body lower cover 2 from the power converter. At this time, the US-standard plug assembly 3 is inserted into the US-standard clamping portion 73, thereby realizing the conductive connection between the live wire plug on the US-standard plug assembly 3 and the fuse 6. When the US-standard plug assembly 3 is not needed, the US-standard plug assembly 3 is not connected to the US-standard clamping portion 73, effectively ensuring the safety of the use of the US-standard plug assembly 3. When the British standard plug assembly 4 is needed, it is only necessary to push the British standard plug assembly 4 out of the power converter and out of the main body lower cover 2. At this time, the British standard plug assembly 4 is inserted into the British standard clamping part 74, thereby realizing the conductive connection between the live wire plug on the British standard plug assembly 4 and the fuse 6. When the British standard plug assembly 4 is not needed, the British standard plug assembly 4 is not connected to the British standard clamping part 74, which effectively ensures the safety of the use of the British standard plug assembly 4.

As for the specific structural setting of the lower conductive connecting piece 72, as shown in FIG. 1 and FIG. 3, the shape of the lower conductive connecting piece 72 can be set according to actual needs. For example, in this embodiment, in order to avoid the live wire pin in the British standard plug assembly 4, it is made into a bent shape.

Regarding the specific structural arrangement of the lower conductive clamping portion 71, as shown in FIG1 and FIG3, the lower conductive clamping portion 71 includes a lower conductive clamping arm 711 for clamping the two sides of the lower portion of the fuse 6 respectively, and the upper end of the lower conductive clamping arm 711 is formed with a lower conductive upper guide block 712 extending obliquely toward the external upper end, and the lower end of the lower conductive clamping arm 711 is formed with a lower conductive lower guide block 713 extending obliquely toward the external lower end. The two sets of lower conductive clamping arms 711 clamp the two sides of the lower part of the fuse 6 respectively, thereby ensuring that the fuse 6 is connected to the live wire of the British standard plug assembly 4 and the American standard plug assembly 3, preventing the fuse 6 from shifting during use, and improving the conduction efficiency. When the fuse 6 and the fuse frame 5 need to be pulled out of the power converter, the fuse 6 and the fuse frame 5 are more easily and accurately pulled out from the lower conductive clamping part 71 under the guiding effect of the lower conductive upper guide block 712, thereby improving the efficiency of pulling out the fuse 6 and the fuse frame 5. After being pulled out, the fuse 6 can be freely replaced in the fuse frame 5 for the next use. When the fuse 6 and the fuse frame 5 need to be installed in the power converter, the fuse 6 and the fuse frame 5 are more easily and accurately inserted into the lower conductive clamping portion 71 under the guiding effect of the lower conductive lower guide block 713, so that they are clamped by the lower conductive clamping portion 71 for conduction, and the installation of the fuse 6 is completed, thereby improving the installation efficiency of the fuse 6 and the fuse frame 5.

As for the specific structural arrangement of the upper conductive sheet 8, as shown in Fig. 1, Fig. 2, Fig. 9 to Fig. 10, the upper conductive sheet 8 further includes an upper conductive connecting sheet 82 in the shape of "∟", a socket hole connecting clamping portion 83 disposed at one end of the upper conductive connecting sheet 82 and electrically connected to the socket hole 11; the upper conductive clamping portion 81 is disposed at the other end of the upper conductive connecting sheet 82. The upper conductive sheet 8 is an integrally formed structure, thereby ensuring the smoothness of conduction between the components and improving the conduction efficiency. The upper conductive connecting piece 82 has a "∟" structure, which can effectively reserve a fixed position for the upper conductive piece 8, so that the upper conductive piece 8 can be fixed to the internal parts of the power converter with screws (such as fixed on the lower end surface of the bracket in the patent number 202021218777.2, which is a single-plug protection door element for a multinational power converter). The upper conductive clamping part 81 is arranged at one end of the upper conductive connecting piece 82 extending upward and extending downward as a whole, thereby clamping the fuse 6. The socket hole 11 connecting clamping part is arranged at one end of the upper conductive connecting piece 82 extending upward as a whole, and the corresponding conductive spring corresponding to the socket hole 11 is connected (for example, the patent number is 201621114014.7, and the patent name is a right socket spring element in a multinational power converter, that is, the end of the right socket spring element extending downward is inserted into the socket hole 11 connecting clamping part), thereby realizing the conduction between the multinational plug inserted into the socket hole 11 and each pin element.

For the specific structural arrangement of the socket hole 11, as shown in FIG8 , reference can be made to the patent number 201621114014.7, the patent name of which is a multinational power converter, for the description of the structure and related principles of a single socket panel or a combined socket panel, so it will not be elaborated in this embodiment.

As for the specific structure of the upper conductive clamping part 81, as shown in Fig. 1, Fig. 2, Fig. 9 to Fig. 10, the upper conductive clamping part 81 includes an upper conductive clamping arm 811 that clamps the upper two sides of the fuse 6 and extends downward as a whole, and the lower part of the upper conductive clamping arm 811 is formed with at least one upper conductive guide block 812 that extends obliquely downward toward the outside. The two sets of upper conductive clamping arms 811 clamp the upper part of the fuse 6, so that the fuse 6 is connected to the live wire on the socket hole 11 in the power converter. When the fuse 6 and the fuse frame 5 need to be installed, the upper end of the fuse 6 first contacts the upper conductive guide block 812, and the fuse 6 is inserted into the upper conductive clamping arm 811 under the guidance of the upper conductive guide block 812, so that the fuse 6 can be inserted into the upper conductive clamping portion 81 more easily and accurately to prevent displacement, and is clamped by the upper conductive clamping portion 81 for conduction, completing the installation of the fuse 6 and improving the efficiency of installation.

Specifically, as shown in Figures 1 and 2, an upper conductive guide block 812 is formed on both sides of the lower part of the upper conductive clamping arm 811. A total of four upper conductive guide blocks 812 guide the four corners of the fuse 6, so that the fuse 6 can be more accurately inserted into the middle of the upper conductive clamping part 81 to complete the conductive connection.

As for the specific manner of installing the fuse frame 5 and the fuse 6 in the power converter, as shown in Figures 1, 4, 6 to 7, a mounting cover 52 is formed on the lower end surface of the fuse frame 5, and at least one mounting limit portion 521 is extended outwardly from the side of the mounting cover 52, and a withdrawal guide surface 522 is formed on the upper end surface of the mounting limit portion 521 and extends obliquely outward and downward from the mounting plate; a fuse insertion hole 21 matching the mounting cover 52 and the mounting limit portion 521 is opened on the main body lower cover 2, and at least one withdrawal clearance groove 22 is recessed on the side of the fuse insertion hole 21. The fuse holder 5 and the fuse 6 are inserted into the power converter through the fuse socket 21, and the installation limit portion 521 is pressed against the side of the fuse socket 21 to prevent the fuse 6 from being over-inserted into the power converter. When the fuse 6 needs to be pulled out, it is only necessary to insert the hand or an object between the pull-out clearance groove 22 and the pull-out guide surface 522, and then lift the installation limit portion 521 along the extension direction of the pull-out guide surface 522, so as to pull out the fuse holder 5 and the fuse 6 installed in the fuse holder 5. The whole process is simple and convenient, and the pull-out efficiency is improved.

As shown in Figures 4 and 5, the mounting frame 51 is rectangular or arc-shaped as a whole. The specific choice can be made according to the actual situation. In this embodiment, a rectangular shape is selected to match the fuse 6.

As for the specific way of installing the fuse 6 in the mounting frame 51, as shown in FIG4, at least one set of symmetrically arranged inner limit convex blocks 511 are convexly provided on the inner wall of the mounting frame 51, and the side of the fuse 6 is pressed against the inner limit convex blocks 511; the lower outer ends of the mounting frame 51 are respectively convexly provided with lower limit convex blocks 512, and the lower end of the fuse 6 is pressed against the lower limit convex blocks 512. The two are combined, so that the fuse 6 is stably fixed in the mounting frame 51 and is not easy to shift, so that the device is smoothly conducted and highly safe, and the circuit in the power converter is effectively protected to prevent circuit overload.

As for the specific plug-in mode of the US-standard plug assembly 3 and the lower conductive sheet 7, as shown in FIG. 11 and FIG. 12, the US-standard plug assembly 3 is provided with a US-standard live wire conductive sheet 31, and the US-standard live wire conductive sheet 31 is inserted into the US-standard clamping portion 73 when the US-standard plug assembly 3 is pushed out of the main body lower cover 2, so that the US-standard plug assembly 3 is conductively connected with the lower conductive sheet 7, and the lower conductive sheet 7 is conductively connected with the fuse 6. The upper end of the fuse 6 is connected to the upper conductive sheet 8, and the upper conductive sheet 8 is connected to the conductive spring on the bracket. The multinational plug that needs to be converted is inserted into the socket hole 11 and is connected to the conductive spring. The entire conductive structure is complete and the conduction is smooth. When not in use, the US-standard live wire conductive sheet 31 is far away from the US-standard clamping portion 73, thereby ensuring that the US-standard live wire conductive sheet 31 is connected and connected to the external plug, thereby improving the safety of the power converter. For the specific structural setting of the US-standard plug assembly 3, reference can be made to the patent number 202010597132.2, the patent name of which is a multi-way sliding small plug, and the structure of the second plug and the use of the remote, etc., so it is not elaborated in this embodiment.

As for the specific plug-in mode of the British standard plug assembly 4 and the lower conductive piece 7, as shown in FIGS. 13 and 14, the British standard plug assembly 4 is provided with a British standard live wire conductive piece 41, and the British standard live wire conductive piece 41 is inserted into the British standard clamping portion 74 when the British standard plug assembly 4 is pushed out of the main body lower cover 2, so that the British standard plug assembly 4 is conductively connected with the lower conductive piece 7, and the lower conductive piece 7 is conductively connected with the fuse 6. The upper end of the fuse 6 is connected to the upper conductive sheet 8, and the upper conductive sheet 8 is connected to the conductive spring on the bracket. The multinational plug that needs to be converted is inserted into the socket hole 11 and is connected to the conductive spring. The entire conductive structure is complete and the conduction is smooth. When not in use, the British standard live wire conductive sheet 41 is far away from the British standard clamping part 74, thereby ensuring that the British standard live wire conductive sheet 41 is connected and connected to the external plug, thereby improving the safety of the power converter. For the specific structural setting of the British standard plug assembly 4, reference can be made to the patent number 202010597132.2, the patent name of which is a multi-way sliding small plug. The structure of the second plug and the use of the remote, etc., are not elaborated in this embodiment.

Implementation Example 2

In the first embodiment, the structure of the anti-overload device is described. In this embodiment, the differences from other embodiments are mainly described, and the same structure will not be repeated in this embodiment.

As shown in FIG15 , the main difference between the second embodiment and the first embodiment is that the socket hole 11 in the present embodiment is a German-style socket panel, thereby satisfying people's needs for different sockets under different circumstances, improving the practicality of the device, and expanding the scope of application of the device. The German-style socket panel is a standard panel, so it is not described in detail in this embodiment.

It should be noted that the anti-overload device for multinational power converters disclosed in this invention is an improvement on the specific structure, and the specific control method is not the innovation of this invention. The fuse, conductive spring and other components involved in this invention can be universal standard parts or components known to technicians in this field, and their structures, principles and control methods are known to technicians in this field through technical manuals or conventional experimental methods.

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

5: Safety rack

6: Insurance

7: Lower conductive sheet

8: Upper conductive sheet

51: Mounting frame

71: Lower conductive clamping part

72: Lower conductive connection piece

73: American standard clamping part

74: British standard clamping part

711: Lower conductive clamping arm

712: Bottom conduction upper guide block

713: Lower conduction lower guide block

82: Upper conductive connection piece

81: Upper conductive clamping part

811: Upper conductive clamping arm

812: Upper conduction guide block

52: Installation cover

521: Install the limiter

522: Pull out the guide surface

511: Inner limit bump

83: Socket hole connection clamping part

Claims (8)

An overload prevention device for a multinational power converter includes a main body upper cover, a main body lower cover covering the main body upper cover, an American standard plug assembly arranged between the main body upper cover and the main body lower cover, and a British standard plug assembly arranged between the main body upper cover and the main body lower cover, wherein the main body upper cover is formed with at least one socket hole, and further includes a detachable A fuse frame is detachably mounted in the lower cover of the main body, a fuse tube is mounted in the fuse frame, a lower conductive sheet is fixed on the lower cover of the main body, and an upper conductive sheet is fixed between the upper cover of the main body and the lower cover of the main body; a mounting frame is formed in the fuse frame, and the fuse tube is mounted in the mounting frame; the lower conductive sheet includes a lower portion of the fuse tube that can be clamped The British standard plug assembly and the American standard plug assembly are respectively plugged and connected with the lower conductive piece; the upper conductive piece includes an upper conductive clamping part that can clamp the upper part of the fuse for conduction; the upper conductive piece is electrically connected to the socket hole; a mounting cover is formed on the lower end surface of the fuse frame, and at least one mounting limit portion is extended outward from the side of the mounting cover, and a pull-out guide surface extending obliquely outward and downward from the mounting plate is formed on the upper end surface of the mounting limit portion; a fuse plug hole matching the mounting cover and the mounting limit portion is provided on the lower cover of the main body, and at least one pull-out clearance groove is recessed on the side of the fuse plug hole; the mounting frame is rectangular or arc-shaped as a whole. As claimed in claim 1, the anti-overload device for a multinational power converter, wherein the lower conductive sheet further includes a lower conductive connecting sheet, a US-standard clamping portion disposed at one end of the lower conductive connecting sheet and capable of being plugged and electrically connected to the US-standard plug assembly, and a British-standard clamping portion disposed at the other end of the lower conductive connecting sheet and capable of being plugged and electrically connected to the British-standard plug assembly; the lower conductive clamping portion is disposed at the other end of the lower conductive connecting sheet. As described in claim 1, the anti-overload device for a multinational power converter, wherein the lower conductive clamping portion includes a lower conductive clamping arm that clamps the two sides of the lower portion of the fuse, and the upper end of the lower conductive clamping arm is formed with a lower conductive upper guide block that extends obliquely toward the external upper end, and the lower end of the lower conductive clamping arm is formed with a lower conductive lower guide block that extends obliquely toward the external lower end. As described in claim 1, the overload prevention device for a multinational power converter, wherein the upper conductive sheet further includes an upper conductive connecting sheet in the shape of "∟", a socket hole connecting clamping portion disposed at one end of the upper conductive connecting sheet and electrically connected to the socket hole; the upper conductive clamping portion is disposed at the other end of the upper conductive connecting sheet. As described in claim 1, the overload prevention device for a multinational power converter, wherein the upper conductive clamping portion includes an upper conductive clamping arm that clamps the upper two sides of the fuse and extends downward as a whole, and the lower part of the upper conductive clamping arm is formed with at least one upper conductive guide block that extends obliquely downward toward the outside. As described in claim 1, the anti-overload device for a multinational power converter, wherein at least one set of symmetrically arranged inner limit bumps are protruded on the inner wall of the mounting frame, and the side of the fuse is pressed against the inner limit bumps; the lower outer ends of the mounting frame are respectively protruded with lower limit bumps, and the lower end of the fuse is pressed against the lower limit bumps. As described in claim 2, the anti-overload device for a multinational power converter, wherein a US-standard live wire conductive piece is provided on the US-standard plug assembly, and the US-standard live wire conductive piece is inserted into the US-standard clamping portion when the US-standard plug assembly is pushed out of the lower cover of the main body. As described in claim 2, the anti-overload device for a multinational power converter, wherein a British standard live wire conductive piece is provided on the British standard plug assembly, and the British standard live wire conductive piece is inserted into the British standard clamping portion when the British standard plug assembly is pushed out of the lower cover of the main body.

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