| 摘要 |
PROBLEM TO BE SOLVED: To provide a striking work machine capable of performing control according to a working condition.SOLUTION: A driver 10 for transmitting torque from a motor through a transmission to a working tool includes a shift knob 41 to be operated by an operator, a slide gear to be driven by an operation power from the shift knob 41 and to switch a transmission ratio of the transmission from a first to a second ratio, and a first ring gear R1 disposed in a torque transmission path of the transmission, the first ring gear being configured to stop if torque applied thereto is equal to or lower than a predetermined value and to rotate to move the shift knob 41 if the torque is greater than a reference torque.SELECTED DRAWING: Figure 4 |
