Leaf springs consist of multiple steel plates of varying lengths and curvatures. After installation, both ends should naturally bend upwards. When the impact force is transmitted from the road surface to the wheel, the steel plate will deform, which plays the role of buffering and damping. In the longitudinal arrangement, it also has the role of guiding force transmission.

Most of the non-independent suspensions use leaf springs as elastic elements, which can eliminate the need for guide devices and shock absorbers, and have a simple structure.

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