| 摘要 |
<p>In a trigger switch having a normal and reverse switching lever configured to switch the direction of rotation of a motor, a case (12) is formed with a speed control unit storage chamber (19) for storing a speed control unit (44), a revolving shaft storage chamber (21) for storing a revolving shaft (29) of the switching lever (26) and a contact strip member storage chamber (22) with continuing from the revolving shaft storage chamber (21) through a shielding member therebetween for storing contact strip member of the switching lever, the revolving shaft storage chamber (21) is formed with a revolving shaft engaging hole (23) configured to allow the revolving shaft (29) to be inserted in an engaged state on an upper portion thereof on the side of the trigger lever (11), and a waterproof device for covering at least a gap between the switching lever (29) and the revolving shaft engaging hole (23) is provided to prevent entry of water therein.</p> |
