Ring-shaped or plate-like element and method for producing same

摘要

A ring-shaped or plate-like element, in particular for a metal-sealing material-feedthrough, for example for devices which are subjected to high pressures, such as igniters for airbags or belt tensioning devices, includes a feedthrough opening, whereby the feedthrough opening is located substantially in the center of the ring-shaped or plate-like element and whereby the ring-shaped or plate-like element has a thickness. The ring-shaped or plate-like element has a relief region in the area of the feedthrough opening. Further, the ring-shaped or plate-like element in the relief region has at least one thickness which is reduced by the height of the relief region and which is selected so that the feedthrough opening can be punched out of the ring-shaped or plate like element having the reducing thickness.

主权项

1. A base body for a metal-sealing material-feedthrough subject to high pressures in an igniter for one of an airbag and a belt tensioning device, said base body for said metal-sealing material feedthrough being an element formed by a process of cold forming and having one of a ring-shape and a plate-like shape, the element comprising a feedthrough opening located substantially in a center of the element and extending from a front side of the element toward a rear side of the element, and a relief region in an area of said feedthrough opening at said rear side of the element and located on a side of said base body distal to said high pressures of said igniter, said relief region having a diameter that is greater than a diameter of said feedthrough opening in a region adjacent to said relief region, the element having an entire thickness (D) and at least one reduced thickness (DR) in said relief region, said at least one reduced thickness (DR) being said entire thickness (D) reduced by a height (HF) of said relief region and selected so that said feedthrough opening is formed by the process of punching said base body through said at least one reduced thickness (DR).