Assembly of a vehicle seat with a fastening device

1. An assembly of a vehicle seat, comprising

a component which comprises an opening which is delimited by an opening edge, and

a fastening device which is to be secured on the component and comprises a clamping part and a screw part which is to be connected in a screwing manner to the clamping part, wherein the clamping part comprises at least one clamping portion, is insertable into the opening in a direction of insertion and is connectable to the component in a clamping manner as a result of screw-connecting the screw part to the clamping part,

wherein in a first rotational position the clamping part is insertable into the opening and, for clamping with the component, is rotatable in a direction of rotation about the direction of insertion from the first rotational position into a second rotational position, in which the at least one clamping portion of the clamping part is movable into abutment with a wall portion of the component, which surrounds the opening, wherein the clamping part comprises at least one stop portion which, in the second rotational position, is in abutment with the opening edge of the opening and blocks the clamping part from being rotated in the direction of rotation beyond the second rotational position,

wherein one of the clamping part and the screw part comprises a threaded opening and the other of the clamping part and the screw part comprises a threaded shaft screw-connectable with said threaded opening,

wherein in a pre-mounted position the screw part is fitted onto the clamping part in that the threaded shaft engages the threaded opening for inserting the clamping part into said opening of said component, the clamping part being rotatable from the first rotational position into the second rotational position together with the screw part by acting onto the screw part,

wherein, upon the clamping part having reached the second rotational position, the screw part is rotatable further in said direction of rotation relative to the clamping part for establishing a clamping action between the clamping part, the component and the screw part.

2. The assembly as claimed in claim 1 , wherein the opening edge delimits the opening circumferentially about the direction of insertion.

3. The assembly as claimed in claim 1 , wherein the clamping part comprises a head, the form of which, in cross section transversely with respect to the direction of insertion, corresponds to the form of the opening of the component.

4. The assembly as claimed in claim 3 , wherein the head of the clamping part and the opening of the component, in cross section transversely with respect to the direction of insertion, comprise a substantially triangular form.

5. The assembly as claimed in claim 3 , wherein the at least one clamping portion is arranged on a side of the head which faces the wall portion of the component when the clamping part is inserted into the opening.

6. The assembly as claimed in claim 1 , wherein at least one of the clamping part and the screw part comprise a trilobular thread.

7. The assembly as claimed claim 1 , wherein the screw part comprises a clamping portion, wherein, with the clamping part inserted into the opening, the clamping portion of the screw part comes to rest against a first side of the wall portion and the at least one clamping portion of the clamping part against a second side of the wall portion which is remote from the first side such that the wall portion is received between the clamping portion of the screw part and the at least one clamping portion of the clamping part.

8. The assembly as claimed in claim 1 , wherein the clamping part comprises at least one further second stop portion which is in abutment with the opening edge of the opening in the first rotational position and blocks the clamping part from being rotated in opposition to the direction of rotation beyond the first rotational position.

9. The assembly as claimed in claim 1 , wherein the fastening device is realized for pivotably mounting a pivot element on the component.

10. The assembly as claimed in claim 9 , wherein the screw part comprises a bearing portion for pivotably mounting the pivot element on the component.

11. The assembly as claimed in claim 1 , wherein the fastening device realizes a stop for delimiting an adjustment path of an adjustment device, the component being a constituent part thereof.

12. The assembly as claimed in claim 11 , wherein the screw part or the clamping part projects into the adjustment path of an adjustment part and, as a result, delimits the adjustment path.

13. A method for mounting an assembly of a vehicle seat, wherein the assembly comprises

a component which comprises an opening which is delimited by an opening edge, and

a fastening device which is to be secured on the component and comprises a clamping part and a screw part which is to be connected in a screwing manner to the clamping part, wherein the clamping part comprises at least one clamping portion, is insertable into the opening in a direction of insertion and is connected to the component in a clamping manner as a result of screw-connecting the screw part to the clamping part, wherein in a first rotational position, the clamping part is inserted into the opening and, for clamping with the component, is rotated in a direction of rotation about the direction of insertion from the first rotational position into a second rotational position, in which the at least one clamping portion of the clamping part is movable into abutment with a wall portion of the component, which surrounds the opening, wherein when the clamping part is rotated into the second rotational position, at least one stop portion of the clamping part moves into abutment with the opening edge of the opening and, as a result, blocks the clamping part from being rotated in the direction of rotation beyond the second rotational position, and

when the clamping part is situated in the second rotational position, the fastening device is secured in a clamping manner on the component as a result of further rotating the screw part in the direction of rotation relative to the clamping part.