| 摘要 |
<P>PROBLEM TO BE SOLVED: To implement watertightness and dust-tightness by closing a gap between a wire harness having a corrugated tube and a grommet without requiring a complicated operation such as adhesive tape winding. <P>SOLUTION: A large diameter cylindrical portion 10 of a grommet 1 is a portion for covering a through hole in a support by contact with an edge portion of the through hole in the support. A small diameter cylindrical portion 20 of the grommet 1 is a portion continuous with the large diameter cylindrical portion 10 and formed to a smaller outside diameter than the large diameter cylindrical portion 10. A turn-round portion 30 is formed at a boundary portion between the large diameter cylindrical portion 10 and the small diameter cylindrical portion 20. The small diameter cylindrical portion 20 has a first projecting portion 21 and a second projecting portion 22 circumferentially annularly formed on an inner surface so as to fit in outer recessed portions of a corrugated tube. The first projecting portion 21 is formed at a tip portion of the small diameter cylindrical portion 20, and the second projecting portion 22 is formed to a lower height than the first projecting portion 21 in a position nearer to a root than the first projecting portion 21. A tip surface of the first projecting portion 21 is a tapering surface 211. <P>COPYRIGHT: (C)2012,JPO&INPIT |
