Self-punching fastener

Details Self-punching fastener Self-punching fastener

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 37/00 (2006.01) B23P 19/06 (2006.01) F16B 37/06 (2006.01)

Patent

CA 2374427

A self-punching fastener can be pressed into a metal sheet member in a way that prevents against rotation and pressing out. The fastener has an annular body with a side facing the metal sheet having radially disposed projections. The projections are pressed into the metal sheet member during the pressing-in and thereby secures the fastener against rotation. An interior thread is positioned in the center of fastener. An annular depression is provided on the side of the annular body facing the metal sheet member. Material is displaced into the annular depression during the setting.

Attache auto-emboutissante à enfoncer dans un élément de feuille métallique de façon à empêcher la rotation ou le détachement. L'attache est constituée d'un corps annulaire dont l'un des côtés fait face à la feuille métallique et comporte des projections disposées en rayons. Les projections s'enfoncent dans la feuille métallique pendant l'emboutissage de façon à arrimer l'attache. Le centre de l'attache est fileté à l'intérieur. Le côté du corps annulaire comprend une cavité annulaire faisant face à la feuille métallique. Une partie du matériau est poussée dans la cavité annulaire pendant l'opération.

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