Chamfered end headed rivet

Details Chamfered end headed rivet Chamfered end headed rivet

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 19/06 (2006.01)

Patent

CA 2216089

The invention relates to a rivet for joining of surface treated objects which is designed for decreasing the stress and damage that may occur on the surface treated frame during the riveting process. The rivet includes a substantially cylindrical shaft (1) and a head (2) having a larger diameter than the shaft, wherein the head comprises an upper limit surface (14) and a lower limit surface (3), where the transition from the upper limiting surface to the contact surface is situated within an area (15) where the head has its maximum radial extension and at the points (16) within this area which are closest to the shaft (1), where the lower limit surface includes an inner limit surface (4) extending substantially perpendicularly from the axis of symmetry of the shaft (7) and which is substantially symmetrical with respect to said axis of symmetry (7) and an outer partial surface (5) adjoining the inner partial surface (4) and there every inner point of the outer partial surface is situated at a greater distance, in the axial direction of the shaft, from the end of the shaft which faces away from the head, than every point on the inner partial surface.

Rivet servant à l'assemblage d'objets ayant reçu un traitement de surface, conçu pour réduire la contrainte et les dommages pouvant survenir sur l'objet ayant reçu un traitement de surface pendant l'opération de rivetage. Le rivet comporte une tige sensiblement cylindrique (1) et une tête (2) dont le diamètre est supérieur à celui de la tige. Cette tête comporte une surface limite supérieure (14) et une surface limite inférieure (3), la transition entre la surface supérieure et la surface de contact se situant dans une zone (15) où la tête présente l'extension radiale maximum, et aux points (16) de cette zone les plus proches de la tige (1). La surface inférieure est constituée d'une surface partielle intérieure (4) s'étendant sensiblement de façon perpendiculaire par rapport à l'axe de symétrie de la tige (7), sensiblement symétrique selon cet axe de symétrie (7), et d'une surface partielle extérieure (5) jointive à la surface partielle intérieure (4), telle que tout point appartenant à la surface partielle extérieure est situé à une distance plus grande, dans le sens axial de la tige, de l'extrémité de la tige opposée à la tête, que tout point de la surface partielle intérieure.

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