| 摘要 |
PROBLEM TO BE SOLVED: To improve installing strength to a sheet. SOLUTION: A grommet body 6 is fitted to a washer 1 for a grommet, and is installed on the sheet S, and becomes the grommet 10. The washer 1 for the grommet has an annular external shape, and the inner peripheral part 3 is protrusively formed on a surface of an outer peripheral part 2. Plural projections 4 are formed on the inner peripheral edge 3a. The projections 4 are arranged at equal intervals in the circumferential direction. The sheet S is arranged on a surface for arranging the projections 4 of the washer 1 for the grommet on one end 7a of the grommet body 6, an opening is formed in the sheet S by inserting one end 7a of a cylindrical fitting piece 7 into a hollow part 5 of the washer 1 for the grommet, one end 7a of the fitting piece 7 is calked so as to be folded back outside, the reverse of the inner peripheral part 3 is supported, and the opening peripheral edge Sa of the sheet S is sandwiched by the projections 4 and a flange part 7b formed on the other end of the fitting piece 7.
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