Patent ID: 9334962
Filing Date: 2016-05-10
CPC Classification: F16J

Claim Text:
1. A waterproof gasket assembly having a retention groove provided in one of first and second case members and a water proof gasket to be retained in said retention groove, said waterproof gasket comprising: straight portions and corner portions provided alternately in a peripheral direction corresponding to outer peripheral shapes of said first and second case members; a main seal portion formed to be brought into close contact with another of said first and second case members; and a seat seal portion formed to be brought into close contact with a bottom surface of said gasket retention groove; wherein said straight portion has a shoulder portion protruding out in a width direction between said main seal portion and the seat seal portion to be brought into close contact with an inner side surface of a groove shoulder of said gasket retention groove, wherein said corner portion has a recession portion retracting in a width direction relatively from said shoulder portion between said main seal portion and the seat seal portion, and wherein, a first gap distance between said shoulder portion and said inner side surface of said groove shoulder is smaller than a second gap distance between said recession portion and said inner side surface of said groove shoulder.