Patent attributes
A strainer device for a drum includes a fixing portion attachable to a shell of the drum, an operation portion, a movable portion moved with respect to the fixing portion to change a snare wire between an ON state and an OFF state, a pressing member, a cam portion including a cam surface, and a follower configured to be relatively displaced with respect to the cam portion between a first position and a second position in the cam portion while the pressing member is pressing against the cam surface. A direction of a force acting on the follower with respect to the cam portion is directed to: a side of the first position within the cam portion in a state where the follower is disposed in the first position, and a side of the second position in a state where the follower is disposed in the second position.