| 摘要 |
PURPOSE:To enable a correct display without receiving the effect of a motor stoppage time on the part of the display of a fastening torque, by forming a structure displaying the detection value by holding a driver main body by the torque detection part having a reaction force type torque sensor and completing this detection display prior to the positive rotation stoppage of a motor. CONSTITUTION:When the rotation of a driver bit 8 is stopped, the transmission from a rotation detecting part 24 is stopped, a timer Ta transmits a timeup signal, it is added to a flip flop FF and the output of the flip flop FF is reversed. This reversal output starts the time counting of a timer Tb and on the other hand becomes a conversion start command signal, and the detected value of a torque detection part 11 is converted into a digital value by being displayed at A-D converting part 32 and displayed by a display part 33. The voltage feeding to a motor 2 is stopped at this time, but the motor 2 continues at its rotation by inertia further and the detected value of the torque detection part 11 is risen, but since the display of the detected value is completed as mentioned before, no effect of the stoppage time of the motor 2 is received. |
