Cycle-type vehicle suspension provided with a resilient element for making it possible to obtain an optimal static compression curve, and optimized resilient element for such suspension

A vehicle wheel suspension system, comprising:

• two relatively movable portions;
• a resilient blade that includes two elements for mechanical connection to each of the relatively movable portions, respectively, and having a flexural resilience at least 10 times greater than a tensile resilience of the blade, the blade being resiliently deformable between:
• a resting state in which the blade has an inwardly curved profile, and
• a maximally extended state in which the blade has an elongate profile, a length of which corresponds to a length of a neutral fiber of the blade,
• while passing through intermediate extension states in which the blade has profiles that are less and less inwardly curved;
• wherein the suspension system is deformable between:
• an initial state in which the relatively movable portions are in a close configuration and the blade is in the resting state in which the blade has the inwardly curved profile, and
• a compressed state in which the relatively movable portions are in a separated configuration and bias the blade, via the connection elements thereof, into an extended state;
• and
• wherein the movable portions comprise a first portion and a second portion connected to one another, a first of the elements for mechanical connection is attached to the first portion, and a second of the elements for mechanical connection is attached to the second portion.