Self-piercing nut element and component assembly comprising the nut element and a sheet metal part
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United States of America Patent
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Dec 29, 2015
Grant Date -
Feb 2, 2012
app pub date -
Jul 28, 2011
filing date -
Jul 30, 2010
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Abstract
A self-piercing nut element having a strength in the range between 700 and 900 MPa is designed for press fitting into a sheet metal part, for the self-piercing attachment of the nut element into a higher strength sheet metal part, such that the piercing section merges directly into the sheet metal contact surface and such that the piercing section has a piercing edge at its free end face, with the piercing edge being spaced apart from the sheet metal contact surface by a peripheral surface having an axial height which corresponds to at least 30%, and preferably at least 50%, of the sheet metal thickness. The radial wall thickness of the piercing section in the region of its free end face from the outer side up to the nominal diameter of the thread corresponds to a thickness between 1.2 times, to 1.8 times, the provided sheet metal thickness.
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