| 摘要 |
PROBLEM TO BE SOLVED: To provide a leaf spring device which is made compatible in both the high-fatigue resistance and the suitable toughness of a connecting part, and a manufacturing method of the leaf spring device.SOLUTION: There is provided a leaf spring device 1 which comprises a main leaf spring 20 composed of a steel plate, and having an elastic part 20b for generating elasticity while being warped, and an eye part 20a which is formed at an end of the elastic part 20b, and in which the elastic part 20b and the eye part 20a are tempered. Also, there is provided a manufacturing method for manufacturing the leaf spring device 1. In the eye part 20a, the end of the elastic part 20b is circularly wound. Then, the eye part 20a is tempered at a high temperature higher than that of the elastic part 20b.SELECTED DRAWING: Figure 2 |
