Composite material sheet spring with an improved lateral stiffness

摘要

The invention relates to a method for increasing the lateral stiffness in the glass fiber composite material sheet springs, which are used in suspension systems. In addition, the method relates to a corresponding spring. The increase in the lateral stiffness is brought about by insertion of two carbon fiber one etching in the regions of a glass fiber composite material spring. The volume of the carbon fiber inserts is preferably between 10 and 20 volume -% of the total volume of the spring and it is a function of the load characteristic, which is required in the suspension system. The composite sheet spring results in advantages in terms of material for glass fiber springs in comparison to conventional steel leaf springs and an improved lateral rigidity, the improved handling similarly, such as an increased level of efficiency in the accommodation of the suspension and of force material storage systems. These novel composite material springs can be formed by transferring a prepreg tape in sheet form, comprising glass fibers, carbon fibers and plastic, or by means of a 3 - d - braiding process.