| 摘要 |
PURPOSE:To obtain a coild spring having plural spring constants by using a strand partially different in section. CONSTITUTION:A coiled spring 1 is formed by a strand, the upper part 2 of which is large, the lower part 3 thereof being small. Thus, two spring constants are obtained. As the coiled spring is a cast in this case, a desired spring constant can be obtained to attain a good buffer effect. |
