Tubular rivet connection between two metal sheets and method for the production thereof
AssigneeAdval Tech Holding AG
InventorRudolf Luthi
Life of this patent
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AssigneeAdval Tech Holding AG
InventorRudolf Luthi
Estimating the term…
The invention relates to a tubular rivet connection between at least one first (1) and one second metal sheet (2). According to the invention, the tubular rivet (3) is made from the metal of the first metal sheet (1) by deforming, in a drawing direction (Z), the edge area of a first hole (4) located in the first metal sheet (1) into a second, larger hole (5) located in the second metal sheet (2), whereby the second hole (5) located in the second metal sheet (2) is, in particular, gradually enlarged with regard to its diameter in the drawing direction (Z). The invention provides that the tubular rivet (3) is shorter in length in the drawing direction (Z) than the thickness of the second metal sheet (2). To this end, the thickness tolerance of commercially available metal sheets is taken into account and damages to the tools and/or the formation of chips is/are prevented. With regard to the method for producing such a tubular rivet connection, the invention provides that the second metal sheet (2) is supported by a matrix, which has a diameter approximately corresponding to the diameter of the hole (5) in the second metal sheet (2).
A tubular rivet connection between at least one first metal sheet (1) and a second metal sheet (2), the tubular rivet (3) being produced from the material of the first metal sheet (1) by deforming, in a drawing direction (Z), the edge region of a first hole (4) in the first metal sheet (1) into a second, larger hole (5) in the second metal sheet (2), and the second hole (5) in the second metal sheet (2) being widened with regard to its diameter in the drawing direction (Z), characterized in that the tubular rivet (3) is designed to be shorter with regard to its length in the drawing direction (Z) than the thickness of the second metal sheet (2).
Dependencies are inferred from the claim text.