| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hand-held driving machine having a control electronic circuit (28) suitably protected from a shock, in the hand-held driving machine including a driving device (20) arranged in a housing (11) and the control electronic circuit (28) for controlling an electronic device function. <P>SOLUTION: The control electronic circuit (28) includes at least a cooling body (31), grout (30) is injected into the control electronic circuit (28) and at least one surface of the cooling body (31) is projected from the grout (30). Preferably, 15-90% of an extension distance in the axial direction orthogonal to the grout (30) is buried in the grout (30). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
