Patent ID: 8684647

Claim:
An operating member mounting structure which mounts an operating member on a mounting plate having an inner edge defining a mounting hole, wherein said operating member includes a flange with a substantially constant radius and a keytop, each being larger than said mounting hole, said flange and said keytop being coupled to each other by a shaft and said flange being formed with a slit, said slit is provided to have an opening at a part of a peripheral edge of said flange to thereby receive the mounting plate around said mounting hole within said slit, and is formed to have a depth such that when said operating member is rotated in a state that an inner edge of said slit and the inner edge of said mounting hole are brought into engagement with each other while the mounting plate around said mounting hole is received within said slit, a point furthest from the engagement point of the peripheral edge of said flange can pass through said mounting hole, said shaft passes through said mounting hole with said keytop exposed from a top surface of said mounting plate in a state that said flange is brought beneath said mounting plate through said mounting hole; and wherein an operated device provided beneath said mounting plate has an operating shaft that is coupled to said flange, the operating shaft having a longitudinal axis that extends substantially perpendicular to a plane of the mounting plate, wherein the operating shaft is movable to cause the operated device to output a signal.