| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable drilling machine having a drill bit rotated without being disturbed by a dust collector section. <P>SOLUTION: The portable drilling machine includes a housing 11, a drill chuck 12 positioned on the front face of the housing, the drill bit detachably coupled to the drill chuck, and a driver positioned inside the housing to provide either the drill bit 13 or the drill chuck with a rotational driving force. The portable drilling machine is provided with; an anti-dust cover 60 having a rear anti-dust cover 61 formed in a cup shape with a drill passing-hole formed in the central region of its bottom face and a front anti-dust cover formed in a tube shape to be coupled to the rear anti-dust cover so as to move towards the bottom face of the rear anti-dust cover when a pressure is applied in the direction directed to the housing and return to its original position when the pressure is removed; and the dust collector section having a retainer for detachably coupling the rear anti-dust cover to the outer face of either the housing or the drill chuck. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
