| 摘要 |
<p>Disclosed is a working tool in which a tip tool with a longitudinal shaft is linearly moved, wherein a motor and other tool constituting members are effectively cooled. In order to cool the inside of a motor-driven hammer (101) comprising a main body (103), a motor (111), and a motion converter (113), the hammer is provided with a first cooling air passage through which a cooling air is supplied to the motor, and a second cooling air passage through which a cooling air is supplied to a hammer portion (115). To generate a cooling air to be supplied to the first and second cooling air passages, a cooling fan (130) is provided at a lower portion of an output shaft of the motor (111) and a hammer portion cooling fan (120) is provided between the output shaft of the motor (111) and the motion converter (113).</p> |
