US Patent 9080588 Quick fastening clip

Quick fastening clip, such as those used in the motor vehicle industry, having formed therein, extending from a vault-like surface, legs which by means of a fold are folded in the form of an internal extension, forming, when both of them on each side are joined together, the contact point for a retaining sill; having flanges inclined so as to be directed approximately towards the centre of said bottom surface; flexible wings are provided, being formed by means of a fold which creates a surface, and, by means of another fold which extends into a descending vertical zone, a through-opening with approximately vertical access is created by means of a band which protrudes transversely from said descending surface.