Plastic adapter for fuel tank

1. A plastic adapter for a fuel tank, comprising:

crimping lugs to fix the adapter to a pipe or opening in the tank, the lugs forming part of a metal insert overmolded with at least part of the adapter,

wherein the lugs are flexible enough to deform and catch on the pipe or opening in the tank;

wherein the lugs comprise bent portions of the insert which protrude in a radial direction from the insert.

2. The adapter according to claim 1 , comprising at least 3 lugs configured to be fixed at regular intervals to the periphery of the pipe or of the opening.

3. The adapter according to claim 1 , constituting a filling adapter and comprising a filling head and a nozzle guide, the insert being overmolded by the nozzle guide.

4. The adapter according to claim 1 , wherein the insert comprises orifices that are filled with some of the plastic of which the adapter is made.

5. A filling pipe onto which an adapter according to claim 1 is crimped.

6. The filling pipe according to claim 5 , wherein the adapter is crimped onto an end of the pipe with an annular surface in contact with a corresponding annular surface on the adapter.

7. The filler pipe according to claim 6 , wherein axial movement of the pipe and of the adapter is limited by a compression washer inserted between the corresponding surfaces.

8. The filler pipe according to claim 7 , wherein a seal is inserted between the adapter and the pipe or the periphery of the opening, and the seal is located in a channel.

9. The adapter according to claim 1 , wherein the lugs extend radially inward toward an interior of the insert.

10. The adapter according to claim 1 , wherein the lugs protude into respective holes disposed in the insert.

11. The adapter according to claim 10 , wherein the lugs are offset from both axial ends of the insert.

12. The adapter according to claim 1 , wherein the lugs form an acute angle with a wall of the insert.