| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate restriction on the material of a rivet, to enable low-cost manufacturing, and to facilitate the disassembly of a product. Ž<P>SOLUTION: A gap is formed between the shank 11 of the rivet 1, and the insertion hole of a member to be fastened 31 and a base material insertion hole 41. A space is formed by interposing a collar 5 in the gap. The base material 3 is pressed by interposing a washer 2 in the caulked distal end side. The washer 2 is made of a shape-memory material of which inner diameter is memorized so as to become larger performing shape-recovery than the outer diameter of the caulked distal end when it is heated to the shape-recovery temperature. The outer diameter of the caulked distal end is formed smaller than the diameters of the insertion hole of the member to be fastened 31 and the base material insertion hole 41, and the inner diameter of the collar 5 is formed smaller than the outer diameter of the caulked distal end. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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