Electricity teeth or bit case convenient to function is switched

The utility model relates to an electricity teeth or bit case convenient to function is switched, including preceding shell, and set up the planetary gear train of shell below in the front, and set upswitching circle, adjusting ring and the rand of shell top in the front, rand and preceding shell facies even, the central authorities of rand are provided with input shaft assembly, inside ratchet and the round pin post of being provided with down of preceding shell, input shaft assembly includes the pivot, pulls out separation blade and last ratchet, the adjusting ring is inside to be providedwith the fillet of screw, and the inside of the fillet of screw is provided with the spring, switches that the circle is inside to be provided with backing sheet, spacing piece and to trip stop the piece, planetary gear train includes planet carrier, planetary gear and ring gear, the spring is located between the fillet of screw and the backing sheet, the round pin post is located and trip stops between piece and the ring