| 摘要 |
<P>PROBLEM TO BE SOLVED: To use a power tool 5 without damaging electric devices and a motor contained therein by preventing rainwater and dust from being intruded therein through a switch 5d section and a ventilation hole 5g even when the power tool 5 is used outdoors in a rainy weather or in a dusty place. <P>SOLUTION: A ventilation auxiliary device 2 covering the ventilation area of the power tool 5 is attached to the power tool. A space formed by a side recess 2b and a rear recess 2e is formed between the ventilation auxiliary device 2 and the ventilation area. A large number of holes 2f are formed in the ventilation auxiliary device 2 to secure a ventilation for cooling the motor. A tool cover 1 having waterproofness and dustproofness is attached to the power tool, and a tool 3 and a tool holding part 5h are made to project from the tool hole 1b of the tool cover 1. <P>COPYRIGHT: (C)2010,JPO&INPIT |
