| 摘要 |
PURPOSE:To enhance the strength and the rigidity of a leaf spring made of FRP (fibre reinforced plastic) by using a plurality of one-direction fibre cloth to construct a fibre substrate impregnated with synthetic resin and sticking these warps into an integrated structure. CONSTITUTION:A leaf spring is obtained by pressing a fibre substrate 10 impregnated with synthetic resin and hardening the synthetic resin. The fibre substrate 10 is constructed, for example, by cutting tape-shaped fibre cloth 11-13 of an assigned width into different lengths, positioning the shortest fibre cloth 13 almost in the central of the length, and arranging other fibre cloths 12 and 11 successively to the outside according to their lengths. Each fibre cloth (11-13) is constructed by arranging a plurality of warps 2 in parallel and weaving woofs 3 with a sectional area and a unit weight of one-third or less of those of the warps 2. At this stage, the interval between woofs 3 is set to be four or more times width of the warps 2. |
