| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that while an engagement projection on a knob member side is ground by a peripheral edge of an engagement hole when a knob member is attached and detached since a conventional fire power regulation lever is made of metal and the knob member may fall from a tip of the fire power regulation lever at the time of fire power regulation or the like as attachment and detachment are repeated, the engagement of the engagement projection is disengaged and the knob member may fall when downward force acts on the knob member mounted atop of a cantilever beam type engagement piece when the fire regulation lever is formed of resin and has a frame part at a tip part thereof, the engagement piece is formed from a swing center side toward the tip side, and the engagement projection is provided atop of the engagement piece.SOLUTION: A cantilever beam type engagement piece which extends from a tip side toward a center of swing is provided to flex in a vertical direction, and an engagement projection is formed on an under surface of a tip of the engagement piece.SELECTED DRAWING: Figure 3 |
