Self-attaching female fastener element, sealed fastener and...

Details Self-attaching female fastener element, sealed fastener and... Self-attaching female fastener element, sealed fastener and...

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 37/06 (2006.01) F01M 11/04 (2006.01) F16B 33/00 (2006.01)

Patent

CA 2491037

A self-attaching female fastener (20) such as a pierce nut having an annular pilot (28), an annular flange (34) surrounding the pilot and an annular groove (38) in the flange bearing surface surrounding the pilot, wherein the bottom wall (44) of the groove includes wedge-shaped recesses (46) dividing the groove bottom wall into segments having parallel sides defined by the adjacent wedge-shaped recesses and the inclined outer wall (40) of the pilot is deformed radially during installation to entrap and compact panel metal in the groove forming a sealed secure installation having improved push-off and anti- rotation strength.

L'invention porte sur une fixation femelle autobloquante (20) du type écrou auto-poinçonneur comportant: une jupe annulaire (28), un flasque annulaire (34) entourant la jupe, et une rainure annulaire (38) formée dans la surface porteuse du flasque entourant la jupe. Le fond (44) de la rainure comporte des évidements (46) en coin le divisant en segments dont les côtés parallèles sont délimités par les évidements contigus. La paroi extérieure (40) inclinée de la jupe se déforme radialement lors de la pose en enfermant et compactant le panneau métallique dans la rainure, en formant un assemblage étanche sûr présentant une résistance améliorée à la poussée et à la rotation

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