Adapter, assembly unit comprising an adapter as well as a method of installing such an assembly unit

1. An adapter for the vehicle-side installation of a component, in particular of a lining part,

comprising a first fastening element to which a component-side holding piece can be attached, and

a second fastening element to which a vehicle-side retaining element can be attached,

wherein the first and second fastening elements are coupled to each other via at least one spring element so as to be movable to a limited extent, and

wherein cooperating stop elements are provided on the first fastening element and the second fastening element, the first and second fastening elements being essentially cylindrical-shaped, and the stop elements limiting the displacement paths of the fastening elements relative to each other in the direction of the longitudinal axes of the cylinders.

2. The adapter according to claim 1 , wherein the first fastening element encloses the second fastening element in a circumferential direction.

3. The adapter according to claim 2 , wherein the cylinder longitudinal axes of both fastening elements are arranged to be coaxial.

4. The adapter according to claim 2 , wherein the spring element, in a cross-section perpendicular to the cylinder longitudinal axis, extends spirally from the first fastening element towards the second fastening element.

5. The adapter according to claim 1 , wherein several spring elements are provided so as to be uniformly distributed in a circumferential direction.

6. The adapter according to claim 1 , wherein the cooperating stop elements include a protrusion provided on one of the fastening elements which engages a recess provided on the other fastening element.

7. The adapter according to claim 1 , wherein the second fastening element comprises a receptacle for a vehicle-side retaining element.

8. The adapter according to claim 7 , wherein the receptacle comprises latching elements.

9. An assembly unit for the vehicle-side installation of a component, in particular of a lining part,

comprising an adapter according to claim 1 ,

a fastening pin capable of being attached to the vehicle side, and

a holding piece which can be attached to the component, in particular to the lining part,

the adapter allowing a limited movement between the fastening pin and the holding piece,

wherein the fastening pin comprises a latching protrusion which is pushed into a vehicle-side opening and can be fixed in the latter in particular by a latching mechanism, as well as a bolt which can be pushed into a receptacle of the second fastening element of the adapter for fixing therein.

10. The assembly unit according to claim 9 , wherein the fastening pin comprises a gasket for sealing the opening.

11. The assembly unit according to claim 9 , wherein the holding piece is integrally connected to the component.

12. A method of installing an assembly unit according to claim 9 , comprising the following steps:

pushing the fastening pin into a vehicle-side opening for fixing thereto;

attaching the adapter to the holding piece of the component; and

connecting the adapter to the fastening pin.

13. The method according to claim 12 , characterized by gluing the fastening pin to the vehicle such that the vehicle-side opening is sealed.

14. A method of installing an assembly unit according to claim 9 , comprising the following steps:

attaching the adapter to a holding piece of the component;

connecting the adapter to the fastening pin; and

pushing the fastening pin into a vehicle-side opening for fixing therein.