Patent ID: 8506228

Claim:
A die and punch rivet connection comprising: a punch rivet; parts structured and arranged to be joined to one another via the punch rivet; and said punch rivet connection being formed by a die cavity delimited by a die floor of the die and a cylindrical circumferential face, wherein, with regard to a die diameter D M and a depth T M of the die cavity, the die is structured so that for the parts to be joined that are made of deformable materials: D M =d N +(0.6 to 1.5) 2 t M , and T M =(1.0 to 2.5) t M , wherein the parts to be joined include an upper part and a die-side part, wherein d N is an shank outer diameter of the rivet shank of the punch rivet and t M is a thickness of a die-side part to be joined, and the die is structured so that for parts to be joined that are made of materials of lower deformability than that of the deformable materials: D M ≦2.2 d N , and T M ≦0.15 D M , and wherein the die is structured and arranged to allow the punch rivet to punch through the upper part while providing a radial thickness of the die-side part and creating an undercut in the die-side part, wherein at least one of: a rivet foot of the punch rivet comprises at least one outwardly curved section having a radius; and a cylindrical circumferential face of the die comprises the die diameter D M .