Lining for the cover of an airbag
AssigneeEissmann Automotive Deutschland GmbH
InventorsNicole Kaulbersch, Ludwig Fleiner
Life of this patent
Estimating the term…
Abstract
In order to realize the required weakening geometries in a lining material for the hinged cover of an airbag, punctures are produced on the inner side of a lining material by a puncturing needle, wherein the punctures are intermittently produced in the lining material from the inner side, the weakening geometry deviates from a straight line to ensure constant, reliable and defined tearing characteristics of the lining material, wherein for producing the lines of arbitrary weakening geometries by the punctures, the puncturing needle is oriented relative to the desired line direction in one preferred embodiment of the invention, i.e., the cutting edge of the puncturing needle is aligned with the weakening geometry to be produced.
Claims30
An interior lining for a cover of a motor vehicle airbag, comprising a lining material that contains successively arranged and spaced punctures in a region of its inner side adapted to face a periphery of a hinged airbag cover, said successively arranged punctures forming a weakening geometry that deviates from a straight line, said punctures extending into said lining material.
A method of manufacturing an interior lining for a cover of a motor vehicle airbag, comprising the steps of producing successively arranged and spaced punctures in a lining material from an inner side adapted to face a periphery of a hinged airbag cover, so that the successively arranged punctures form a weakening geometry that deviates from a straight line;
- and extending the punctures into the lining material.
Dependencies are inferred from the claim text.