LINEAR RECIPROCATING-MOTION APPARATUS

A linear reciprocating-motion apparatus includes at least one movable member () supported by a housing () and being capable of undergoing linear reciprocating motion in a range that includes a first position, a second position, and a third position; a stopper () supported by the housing to be displaceable between a blocking position that blocks the at least one movable member and a nonblocking position that does not block the at least one movable member, and is displaced to the nonblocking position in response to a specific operation; an intermittent mechanism () that interacts with movement of the at least one movable member and assumes a specific state once every two times that the at least one movable member moves to the third position; and a switch (SW) that, in response to the specific state, is switched from a disconnected state or a connected state to the other thereof.