| 摘要 |
A waterproof gasket for a small size electronic appliance of the invention has straight portions (1A) and corner portions (1B) alternately in a peripheral direction, a main seal portion (11) and a seat seal portion (12) brought into close contact with a bottom surface of a gasket retention groove are formed, a shoulder portion (13) protruding in a width direction between said main seal portion (11) and the seat seal portion (12) so as to be brought into close contact with an inner side surface of a groove shoulder of said gasket retention groove is formed in said straight portion (1A), and a recession portion (14) retracting in a width direction relatively from said shoulder portion (13) between said main seal portion (11) and the seat seal portion (12) is formed in said corner portion (1B). Accordingly, a partial compression reaction force increase is prevented in the corner portion. |
