Profil Verbindungstechnik Gmbh & Co Kg

Amer Mahlme

Christian Sowa

Tobias Jene

Richard Humpert

Oliver Diehl

A self-punching functional element serves for fastening to a workpiece, in particular to a high-strength sheet metal part, and comprises a functional section; and a fastening section that has a contact surface for an engagement of a setting device, an end face remote from the contact surface, and an outer peripheral surface connecting the contact surface and the end face. The end face is radially outwardly bounded by a punching edge for punching a slug out of the workpiece, and at least one projection is provided at the outer peripheral surface adjacent to the contact surface, said projection rising from the outer peripheral surface in a radial direction and extending further outwardly in the radial direction than the punching edge.

Self-punching functional element, component assembly and method of manufacturing a component assembly

The present invention relates to a self-punching functional element that is adapted for punching into a workpiece, in particular into a sheet metal part. It comprises a head part forming a flange and having a contact surface for contact with the workpiece; and a punching section that extends away from the head part, in particular from the contact surface, and that is in particular arranged coaxially to a central longitudinal axis of the functional element. The punching section has a peripheral punching edge at its free end for punching through the workpiece and surrounds a cavity in a peripheral direction, said cavity having an opening defined by the punching edge. An inner wall of the punching section facing the cavity has at least one elevated slug securing portion projecting radially inwardly into the cavity, in particular wherein the elevated portion has the form of a rib extending in an axial direction.

Self-punching fastener

A self-piercing rivet element is provided with a body part having a thread cylinder and with a hollow rivet section to be pressed into an as yet unpierced component. In this arrangement, the rivet section is designed to be at least regionally dilatable by means of a die button and tapers in the direction of the central longitudinal axis and away from the body part. The hollow rivet section has, in the region of the transition to the body part, a diameter, which is larger than the outer diameter of the thread cylinder. Furthermore, the rivet section has a closed peripheral wall and an opening at its free end which corresponds at least substantially in diameter to the core diameter of the thread cylinder. Furthermore a component assembly, a method for the manufacture of the component assembly and the die button are claimed.

Self-piercing rivet element a component assembly comprising the rivet element and a component a method for the manufacture of the component assembly and a die button

Growing community of inventors

Bad Homburg, Germany

Amer Mahlme