The present invention relates to a limit driving device for an electric switch. The limit driving device for an electric switch can apply a limit assembly to the front surface of an electric switch, provide user convenience for a worker by allowing the worker to easily control and check the same, and apply a cartridge type limit driving means coupled to an output shaft in order to transmit power to the limit assembly, thereby enhancing the assembly performance, productivity, and maintenance and repair convenience. The limit driving device is used for opening or closing a vinyl sheet, a non-woven fabric, horizontal curtains, and an outer heat-keeping blanket. The limit driving device for an electric switch has a driving motor installed on the upper part of the switch body to rotate forward and backward, has the output shaft drawn out from a side or both sides in a direction perpendicular to the driving motor, and provides the driving force of the output shaft to the limit assembly by applying the electric switch coupled to the limit assembly in the front area of the output shaft in a perpendicular direction. The limit driving assembly includes: a driving means installation hole formed on the switch body on the side coupled with the limit assembly； a limit driving means which is coupled to the switch body while being fitted to the driving means installation hole like a cartridge and is coupled with the limit gears formed on the outer shaft for a driving operation； and a limit input shaft which is installed to have both ends supported on a battery unit formed on the front surface of the switch body, is coupled with the limit driving means with gears on the center, is coupled with limit worm gears of the limit assembly on both sides of the limit input gear with gears, and has screw gears.본 발명은 전동개폐기의 전면에 리미트 어셈블리가 적용될 수 있도록 하여 작업자가 쉽게 조작 내지는 확인할 수 있는 사용 편리성을 제공할 수 있도록 하고, 리미트 어셈블리로 동력을 전달하는 리미트구동수단을 출력축에 기어 결합되는 카트리지 타입으로 적용하여 조립성 및 생산성 향상과 유지 보수의 편리성 제공이 가능하도록 하여 비닐개폐용
