| 摘要 |
<p>To ensure that a hammer (17) can retract by a sufficient amount without interfering with a washer (30) receiving a rear end of a coil spring (19), there is disclosed an impact driver having a washer (30) receiving a rear end of a coil spring (19) biasing a hammer (17) of an impact mechanism (8) to an advanced position. The washer (30) is annular with an inner diameter larger than an inner diameter of an annular groove disposed on a rear surface of the hammer (17), and includes a frontward extended portion disposed at an inner circumference of the washer (30). Between a carrier portion (13) of the spindle (7) and the washer (30), there is disposed a positioner that positions the washer (30) coaxially with the spindle (7).</p> |
