Patent ID: 8607892

Claim:
A rotary striking tool, comprising: a motor; an oil pulse unit that is driven by the motor; a detection unit that detects an impact generated at the oil pulse unit and outputs an output signal; a rotation position detection element that detects a rotation angle of the motor and outputs a position signal; and a control unit that controls a rotation of the motor based on the output signal, wherein the control unit: uses the output signal from the detection unit when a time interval of a position signal from the rotation position detection element is equal to or longer than a predetermined time, measures a time interval from when the output signal is generated to when the position signal is outputted from the rotation position detection element thereafter, determines the output signal corresponding to the given impact as an output signal due to a main striking when the measured time interval is equal to or longer than a predetermined time, and determines the output signal corresponding to the given impact as an output signal due to a half pulse when the measured time interval is shorter than the predetermined time.