One-piece flat spring progressive characteristic curve

The flat spring is divided into multiple curve sections (first curve section in the middle region, second curve sections in the edge regions) with different curve directions and characteristics. Each section becomes operative at different load levels, creating a progressive transition rather than an abrupt change. This segmentation allows the spring to adapt to different load requirements while maintaining smooth characteristic curve transitions.

The spring design incorporates dynamic geometric features including vertices and slanted end regions that change their functional contribution as load increases. The effective length of the spring dynamically reduces under increasing load as the slanted end regions tilt, allowing the spring to progress from a softer characteristic at low loads to a stiffer characteristic at high loads without abrupt transitions.

The invention merges multiple functional curve sections into a single integrated flat spring structure. The middle region with its first curve direction and the edge regions with their second curve directions are combined into one piece, eliminating the need for separate parts while achieving the progressive spring characteristic. This merging reduces the total weight compared to multi-part designs while maintaining the desired load-adaptive behavior.

Different regions of the flat spring have locally optimized geometric properties: the middle region has a first curve direction for initial load support, while the edge regions have second curve directions opposed to the first, with vertices and slanted end regions. These local quality variations enable progressive spring characteristic without requiring multiple separate components, thus reducing overall weight.

The invention combines all curve sections and transition zones into a single continuous flat spring structure, eliminating the need for multiple separate parts. This unified design achieves a truly progressive spring characteristic curve through the coordinated deformation of the middle region and edge regions, while minimizing dead weight by removing unnecessary joints, fasteners, and interface components required in multi-part designs.

The flat spring incorporates multiple curved sections with different radii and directions - the middle region has a first curve direction while the edge regions have second curve directions opposed to the first. These curved geometries, combined with vertices and slanted end regions, create a naturally progressive deformation pattern that smooths the spring characteristic curve transition without requiring multiple separate parts, thus reducing dead weight while improving driving quality.