F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 37/00 (2006.01) F16B 25/06 (2006.01)
Patent
CA 2494180
A fastening element (10) and method that utilizes a fastener (12) or stamping which is capable of forming a fastening assembly by engagement with a self- tapping fastener (40) is disclosed. The fastening element (10) includes one or more indentations (28) formed within a portion of the circumference of an unthreaded bore (22) located within the fastening element. Each indentation has an edge (34) that can have the same helix angle or pitch as the self- tapping fastener that it is to engage to serve as a guide to properly align the fastener within the bore. The indentations also assist formation of mating threads within the element by significantly reducing the required end load to start the tapping process.
L'invention porte sur un procédé et un dispositif de fixation utilisant un élément de fixation ou d'emboutissage permettant de réaliser l'ensemble de fixation par prise avec un élément de fixation auto-taraudeur. L'élément de fixation comprend une ou plusieurs dentelures formées à l'intérieur d'une partie de la circonférence d'un alésage lisse de l'élément de fixation. Chaque dentelure comporte un bord pouvant avoir le même angle ou pas d'hélice que l'élément de fixation auto-taraudeur sur lequel il doit prendre pour servir d'organe permettant à l'élément de fixation de se présenter droit dans l'alésage. Les dentelures facilitent également la formation de filets complémentaires dans l'élément en réduisant considérablement la charge nécessaire à l'extrémité pour amorcer le processus de taraudage.
Macrae & Co.
Nd Industries Inc.
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