Patent · US Active

Self-piercing rivet and self-piercing riveting method and self-piercing riveted joint

US10550873B2 · kind B2 · utility

0Cited by

12References

6Claims

0Family size

Assignee

NEWFREY LLC · US

Inventors

Steffen Hofmann · Steinfeld, DE
Paul BARTIG · Gießen, DE
Frank Wilhelm · Marshfield, US
Matthias Wissling · Gießen, DE

Key dates

Filing date	Oct 30, 2017
Grant date	Feb 4, 2020
Priority date	—
Expiry date	Aug 2, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H63/42
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A riveted joint comprising: an upper workpiece and a lower workpiece, and a self-piercing rivet. The rivet in an undeformed state, before the creation of the riveted joint, included: a head defining a head diameter (DH); a shank defining a shank diameter (DS); and a foot end opposite the head. Radially outward at the foot end is a flat surface facing away from the head; and an axial recess located radially inward of the flat surface, partly defined in the foot end, open axially away from the head, and frustoconical in longitudinal cross section. The axial recess defining an axial depth (LB). The ratio of recess axial depth (LB) to shank diameter (DS) is less than 0.3. And in a deformed state, after the creation of the riveted joint, the rivet extends through the first workpiece and penetrates the second workpiece; and the head bears against the upper surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.