WATERPROOF STRUCTURE, WATERPROOFING METHOD, AND ELECTRONIC DEVICE USING THE STRUCTURE AND METHOD

摘要

Provided is a waterproof structure including: a first casing component member 107; a second casing component member 110 that is fitted to the first casing component member 107 and constitutes a casing; an annular groove portion 71 formed in the first casing component member 107; and an annular seal member 110c that is provided on the second casing component member 110 and inserted into the groove portion 71. A cross section of the seal member 110c includes: a base portion BH; a trunk portion RH formed substantially perpendicular from the base portion BH; and a valve portion VH formed to protrude in a triangular shape from one side surface on a tip side of the trunk portion, and in a fitted state, the trunk portion and the valve portion are housed in an enclosed space formed by the base portion and the groove portion.