| 摘要 |
PROBLEM TO BE SOLVED: To obtain a seal structure which is high in reliablity and secures a satisfactory sealing state for considerably long time, as the seal structure of a seal part constituted so that an elastic material sheet deformed repeatedly is fixed at its periphery part. SOLUTION: In a sealing method which prevents water from being leaked at a seal part where the elastic material sheet 5 which is deformed repeatedly in contact with water housed in a water housing space is fixed by its periphery part between the water housing space in which water is sometimes housed and a divided space divided from the water housing space by a fixing member, a water swelling rubber 12a which swells absorbing the water by contact with the water is interposed to the seal part to prevent the water from being leaked at the seal part by the water swelling rubber 12a after deterioration with time of the elastic material sheet 5. COPYRIGHT: (C)2007,JPO&INPIT
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