Method for fastening an accessory to a plastic fuel tank

摘要

Method for fastening an accessory to a wall of a plastic fuel tank, this fastening taking place by snap-riveting using a tool at the same time as the tank is manufactured by molding, the accessory being, for this purpose, provided at at least one of its fastening points with an orifice through which the snap-riveting is carried out. According to the invention, a concave relief at least partially surrounds this orifice, the relief having a size and shape suitable for being able to cooperate with an excrescence of the tool during the snap-riveting.

主权项

1. A method for fastening an accessory to a wall of a plastic fuel tank, comprising:
fastening by snap-riveting using a tool, at the same time as said tank is manufactured by moulding with a mould, the accessory including at least one orifice through which the snap-riveting is carried out by material of the tank protruding from the orifice and being deformed to mould the rivet, wherein the snap-riveting orifice is at least partially surrounded by a concave relief that protrudes towards an inside of the tank into which a convex relief of the tool presses in order to force the material through the orifice, the convex relief of the tool comprising a counterform to mould an upper part of the rivet.