Functional element, method for fixing it in a sheet metal...

F - Mech Eng,Light,Heat,Weapons – 16 – B

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F16B 19/08 (2006.01) B21J 15/02 (2006.01) B23P 19/06 (2006.01) F16B 5/04 (2006.01) F16B 17/00 (2006.01) F16B 37/06 (2006.01)

Patent

CA 2378812

The invention concerns a functional element, in particular a bolt, consisting of a shank portion (14) and a head portion (16) designed to be assembled riveted with a plate element, in particular a sheet metal part. The invention is characterised in that the head portion (16) is hollow and has practically the same external diameter as the shank portion. When mounted, the hollow head portion (16) of the functional element (10) forms a riveting edge (37) on one side of the sheet metal part and an annular groove (52) on the other side of the sheet metal part, the annular groove (52) acting as a flange. The invention further concerns a method for fixing the functional element in a sheet metal part and the resulting assembling element (16), as well as a matrix and a swaging assembly.

L'invention concerne un élément fonctionnel, en particulier un boulon, constitué d'une partie tige (14) et d'une partie tête (16) conçue pour un assemblage rivé avec un élément en plaque, en particulier avec une pièce de tôle. Selon l'invention, la partie tête (16) est creuse et présente pratiquement au moins le même diamètre externe que la partie tige. A l'état monté, la partie tête creuse (16) de l'élément fonctionnel (10) forme un bord de rivetage (37) sur un côté de la pièce de tôle et une rainure annulaire (52) sur l'autre côté de la pièce de tôle, la rainure annulaire (52) servant de bride. L'invention concerne également un procédé pour la pose de l'élément fonctionnel dans une pièce de tôle et l'élément d'assemblage (16) ainsi obtenu, ainsi qu'une matrice et un ensemble poinçon.

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