Single-ring switching structure for electric tool

The utility model discloses a single-ring switching structure for an electric tool, which comprises a base, a middle shell, a lifting pin ring and a torsion cover, an elastic braking device is arranged between the base and the lifting pin ring, and when the elastic braking device abuts against a second groove of the lifting pin ring, the elastic braking device is located at the position of a shallow groove of the lifting pin ring, and when the elastic braking device abuts against the second groove of the lifting pin ring, the torsion cover is arranged on the middle shell. When the up-and-down moving distance is small, the electric tool is set to be a screw gear; the torsion cover is rotated, inner teeth of the torsion cover are meshed with outer teeth of the lifting pin ring, the torsion cover drives the lifting pin ring to rotate clockwise, the elastic braking device enters the first groove from the second groove, the elastic braking device is located at the deep groove position of the lifting pin ring, the