lehtijousilla

Lehtijousilla, often translated as leaf springs, are a type of spring used in vehicles and other applications to absorb shocks and provide a smoother ride. They are composed of multiple layers of metal, typically steel, arranged in a parabolic or semi-elliptical shape. These layers, known as leaves, are of varying lengths and are clamped together at their center.

When a load is applied, the leaves of the lehtijousilla flex and bend, allowing the spring to compress and extend. This flexing action distributes the force over a larger area, effectively cushioning the impact. The number and thickness of the leaves can be adjusted to achieve different levels of stiffness and load-carrying capacity.

Historically, lehtijousilla were a primary suspension component in horse-drawn carriages and early automobiles. While modern vehicles often employ more sophisticated suspension systems like coil springs and pneumatic suspension, leaf springs remain in use, particularly in heavy-duty trucks, buses, and some off-road vehicles due to their robust construction and cost-effectiveness. They are also found in some railway rolling stock and industrial machinery. The design allows for simple mounting and can also serve as a structural component, replacing separate linkages in some suspension designs.