| 摘要 |
<p>An impact driver (1) with a vibration mechanism (90) includes a vibration switching ring (97) externally fitted to a second cam (93) in the forward position in such a manner that an inner protrusion (99) on the inner circumference is latched a protrusion (96) on the outer circumference of the second cam (93) so that the rotation of the second cam (93) is restricted. Further, a coil spring (100) is provided for biasing the vibration switching ring (97) to the forward position. A link plate provided between the mode switching ring (64) and the vibration switching ring (97) latches onto the front surface of the vibration switching ring (97) and engages an engaging protrusion (105) at the rear end with the mode switching ring (64). The link plate moves forward or backward to a first position where the vibration switching ring (97) moves to the forward position or a second position where the vibration switching ring (97) moves to the backward position.</p> |
