| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealing structure that permits easy fitting of an insertion member into a member receiving the insertion and that prevents damage to the insertion member and the member receiving the insertion. <P>SOLUTION: The insertion member 2 includes: a first larger-diameter columnar part 21; a first smaller-diameter columnar part 22 having an outer diameter smaller than that of the first larger-diameter columnar part 21; and a first step part 23 formed by a difference in diameter between the first larger-diameter columnar part 21 and the first smaller-diameter columnar part 22. The member 3 receiving the insertion includes: a second larger-diameter columnar part 31 having an inner diameter corresponding to the outer diameter of the first larger-diameter columnar part 21; a second smaller-diameter columnar part 32 having an inner diameter corresponding to the outer diameter of the first smaller-diameter columnar part 22; and a second step part 33 formed by a difference in diameter between the second larger-diameter columnar part 31 and the second smaller-diameter columnar part 32, wherein, an accommodation region for accommodating an O-ring 4 is formed by an outer circumferential surface of the first smaller-diameter columnar part 22, an outer surface of the first step part 23, an inner circumferential surface of the second larger-diameter columnar part 31 and an inner surface of the second step part 33. <P>COPYRIGHT: (C)2013,JPO&INPIT |
