Waterprooof switch device

A waterproof switch device provided in an electronic apparatus, the waterproof switch device comprising:

• a switch member including a body portion and a movable portion configured to move relative to the body portion, the body portion being fixed to an inner side of an exterior member of the electronic apparatus, and the switch member being configured to exert electrical action according to movement of the movable portion;
• an operated portion that is a shaft member having a distal end exposed from an opening provided in the exterior member and a proximal end connected to the movable portion, the operated portion including a flange portion extending in a radial direction between the distal end and the proximal end;
• a waterproof cover made of elastomer material, the waterproof cover including a first watertight portion in which a through hole is formed, the first watertight portion being in tight contact with an outer circumferential surface of a part of the operated portion between the distal end and the flange portion, a second watertight portion that is in tight contact with an internal surface of the exterior member in a manner of surrounding the opening or in tight contact with a whole inner circumferential surface of the opening in a circumferential direction, and a film-like portion provided between the first watertight portion and the second watertight portion;
• and
• a retaining member including an opening portion through which a part of the operated portion closer to the distal end than the flange portion can pass but the flange portion cannot pass, the retaining member being disposed farther inward from the exterior member than the waterproof cover.