Multi -functional electric hammer of single knob

The utility model discloses a multi -functional electric hammer of single knob, it includes fixing base, impacting shaft, cylinder, transmission shaft and function knob, install the gear wheel on the impacting shaft, install pinion, pendulum rod bearing and drive gear on the transmission shaft, the middle part of transmission shaft is provided with the external splines, be provided with first clutch and second clutch respectively in the both sides of external splines on the transmission shaft, drive gear is through an inside and outside spline and a clutch, first clutch selectively meshes or separates with the epaxial external splines of transmission, pendulum rod bearing and pinion install in proper order in on the transmission shaft in the second clutch outside, the second clutch selectively with spline on the pendulum rod bearing meshes or separates, and the rotation function knob drives first, two couplings or throws off the external splines of transmission shaft. Above -mentioned multi -functional electr