Multifunctional safe changeover plug

Abstract

The invention discloses a multifunctional safe changeover plug. A casing of the multifunctional safe changeover plug comprises a base and a surface cover, wherein a printed circuit board (PCB) is installed in a containing cavity between the base and the surface cover, at least two power source input plugs are assembled on the base, the PCB is provided with power source input terminals and power source output plugs, and the surface cover is provided with a universal serial bus (USB) charging connector; a safe control module is arranged on the PCB and comprises output power-connection terminals and input power-connection terminals, wherein the input power-connection terminals respectively in electric connection with the corresponding power source input terminals, the safe control module is assembled on a safe control switch on the surface cover, the safe control switch is selectively and electrically connected with the input power-connection terminals, and the output power-connection terminals are respectively and electrically connected with the power source output plugs and the USB charging connector. In working, only one power source input plug can be in electrified connection with the power source output plugs and the USB charging connector, and the other power input plugs are disconnected and not electrified, so that the multifunctional safe changeover plug has the advantages of being high in safety.

Description

technical field [0001] The invention relates to the technical field of conversion plugs, in particular to a multifunctional safety conversion plug. Background technique [0002] Sockets in different countries often have different structures. For people traveling abroad, it is particularly necessary to carry conversion plugs; traditional conversion plugs generally include multiple power input plugs (such as British plugs, American plugs, Australian plugs, etc.) , European plug, etc.) and power output socket. [0003] Traditional conversion plugs generally use plastic parts to mechanically control the opening and retracting of the power input plug, that is, to ensure that only one power input plug is opened and the other power input plugs are retracted; however, the above structure is often due to design defects or structural failures of plastic parts. It will cause multiple power input plugs to be turned on at the same time, and even some products do not have a mechanical co...

AI Technical Summary

Problems solved by technology

[0003] Traditional conversion plugs generally use plastic parts to mechanically control the opening and retracting of the power input plug, that is, to ensure that only one power input plug is opened and the other power input plugs are retracted; however, the above structure is often due to design defects or structural failures of plastic parts. It will cause multiple power input plugs to be turned on at the same time, and even some products do not have a mechanical control structure of plastic parts and can turn on all power input plugs at the same time; the power input plugs of traditional conversion plugs are connected to each other, and when multiple power input plugs are turned on at the same time Under certain circumstances, when one of the power input plugs is inserted into the power socket, the other power input plugs that are turned on but not inserted into the power socket will also be charged, and there will be a risk of electric shock if touched by hands

Images