Patent ID: 8426755

Claim:
An input device comprising: an operating member arranged to a substrate; and a housing having an external surface on an external side and an internal surface on an internal side, wherein: a receiving recess is formed on the external surface of the housing, the receiving recess being defined by at least a bottom surface and a side surface on the periphery of the bottom surface; an operative member hole is formed in the housing at a predetermined position in the receiving recess to connect the external side and the internal side of the housing; the substrate is arranged on the internal side of the housing such that the operating member passes through the operative member hole; a drainage recess is formed on the bottom surface of the receiving recess, the drainage recess having a shape that corresponds to a gap between the operating member and the side surface of the receiving recess; and a housing drain hole is formed at a predetermined location in the drainage recess to connect the drainage recess and the internal side of the housing.