| 摘要 |
<p>A rotary impact tool comprising a motor, an impact mechanism, a drive unit, an impact detection unit, and a control unit. The impact mechanism comprises: a hammer that rotates as a result of the rotational force of the motor; an anvil that receives the rotational force of the hammer and rotates; and a mounting unit for attaching tool elements to the anvil. When at least a prescribed value of torque is applied externally to the anvil, the hammer disconnects from the anvil, freewheels, and strikes the anvil in the direction of rotation. The impact detection unit detects impact on the anvil by the hammer. The control unit reduces the motor drive force from the drive unit when the number of impacts detected by the impact detection unit reaches a predetermined determination count being a value greater than 1.</p> |
