| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily sort parts by materials and reuse them by providing identification parts formed into different shapes from each other thereto according to qualities of the respective components. SOLUTION: A tensile coil spring 10 made of SWPB(piano wire) is formed of a body part 12 wound around spirally and an end part 14. The end part 14 is machined into a semi-circular shape and the end part 14 is hooked to a device. The end part 14 formed into the semi-circular shape is an example of an identification part. The formation of the end part 14 into the semi-circular shape expresses that the tensile coil spring 10 is manufactured of SWPB(piano wire). Identification parts of different shapes from each other according to qualities are formed in the end parts 14 of a plurality of tensile coil springs 10 so that the tensile coil springs 10 can be easily classified according to the quality so as to facilitate the reuse.</p> |
