| 摘要 |
<p>A safety mechanism for a nailing machine in which a start valve (5) is driven by cooperative action of operating a trigger lever (6) and moving a contact arm (7) to an uppermost point so as to be pressed against a material to be nailed, and which a hammering mechanism (4) for hammering a nail supplied to a nose section (2) arranged at the front end portion of a housing (1) is actuated by the start valve (5), the safety mechanism comprises: an arm body (7a) provided with the contact arm (7) and being vertically movable along the nose section (2); a threaded member (17) attached at an upper end portion of the arm body (7a), the threaded member (17) being helically movable; a push-up member positioned above the threaded member, the push-up member (21) being cooperating with the threaded member (17) to push up the trigger lever (6) to make effective the operation of the trigger lever (6) when the contact arm (7) is moved to the uppermost point thereof; an adjust dial (18) attached to the housing (1) and positioned below the trigger lever (6), for rotating the threaded member (17); and a cover member (28) covering the contact arm (7) in part which is below the adjust dial (18) and above the lower end of the arm body (7a). <IMAGE></p> |
