| 摘要 |
In order to make assembly of an impact driver more efficient while allowing sufficient mitigation of vibrations and reduction of weight to be achieved, three each of first engagement pawls (30e) and second engagement pawls (18d) for generating a striking force are disposed, and the relative play angle between a hammer (30) and anvil (18) along a rotating direction of a spindle is set to 90 degrees or smaller. This allows the weight of the impact driver to be reduced more than before while sufficiently mitigating vibrations generated by the impact driver. In addition, because the distance between adjoining first engagement pawls (30e) can be made longer than before, assembly of the impact driver including work such as installing steel balls can be made more efficient. |
