US Patent 7179013 Self centering sill plate retainer with opposing wings

A one-piece molded apparatus includes a first body section having a head, a skirt, a pair of support posts joined to the skirt, and a first engagement wing. A second body section includes a second engagement wing, and a living hinge joining the second wing to the support posts. The second wing rotates about the living hinge and engages with the support posts such that at least the second wing can thereafter deflect. In another embodiment, a dog-house assembly is provided on a trim piece to mate with the apparatus. In still another embodiment, a method for forming the fasteners is provided. In yet another embodiment, a method to attach a trim piece to a vehicle is provided.