Interior paneling part with an airbag door-flap

1. An interior paneling part, comprising:

a hinge area with a rib; and

an airbag door-flap,

wherein the airbag door-flap is rotatably affixed to the interior paneling part in an open state in the hinge area via a flexible strap hinge, and the rib is disposed in the hinge area and is defined by an change in length of the strap hinge and wherein the rib is constructed as a deformation rib, and the deformation rib is disposed on an inside of the interior paneling part and projecting from the interior paneling part, and the strap hinge runs out to the inside of the interior paneling part along the deformation rib.

2. The part according to claim 1 , wherein the deformation rib is constructed as a compression rib, and the compression rib is made of a compressible material and is distorted under tensile loading of the strap hinge at the interior paneling part such that the strap hinge is elongated by a change in length.

3. The part according to claim 2 , wherein the strap hinge is tightened and compressed by the compression rib when the airbag is deployed and the airbag door-flap is pressed outwardly.

4. The part according to claim 2 , wherein the strap hinge is affixed to the inside of the interior paneling part and the airbag door-flap.

5. The part according to claim 1 , wherein the deformation rib is constructed as a buckling rib, and the buckling rib exhibits a break point at the rib base and under tensile loading of the strap hinge being snapped off at the interior paneling part, such that the strap hinge is elongated by a change in length.

6. The part according to claim 1 , wherein a plurality of ribs are disposed in the hinge area.

7. The part according to claim 1 , wherein the strap hinge follows the contour of the rib.

8. An interior paneling part, comprising:

a hinge area with a rib; and

an airbag door-flap,

wherein the airbag door-flap is rotatably affixed to the interior paneling part in an open state in the hinge area via a flexible strap hinge, and the rib is disposed in the hinge area and is defined by an change in length of the strap hinge and wherein the rib is constructed as a guide rib, the guide rib being firmly connected to an airbag retainer so that the inside of the interior paneling part and the strap hinge runs between the interior paneling part and the airbag retainer, and the guide rib penetrates the strap hinge in the area of a recess and that the longitudinal extent of the recess corresponds to a sum of the change in length and the longitudinal extent of the guide rib.

9. An interior paneling part, comprising:

a hinge area with a rib; and

an airbag door-flap,

wherein the airbag door-flap is rotatably affixed to the interior paneling part in an open state in the hinge area via a flexible strap hinge, and the rib is disposed in the hinge area and is defined by an change in length of the strap hinge and wherein the rib is constructed as a clamping rib on the airbag retainer, and the strap hinge is disposed between the clamping rib and the inside of the interior paneling part and is firmly clamped so that in response to the airbag door-flap opening, tensile forces are greater at the strap hinge than a clamping force and a change in length of the strap hinge occurs.

10. An interior paneling part, comprising:

a hinge area with a rib; and

an airbag door-flap,

wherein the airbag door-flap is rotatably affixed to the interior paneling part in an open state in the hinge area via a flexible strap hinge, and the rib is disposed in the hinge area and is defined by an change in length of the strap hinge and wherein a plurality of ribs include a guide rib and a clamping rib disposed in the hinge area.

11. The part according to claim 10 wherein the guide rib and the clamping rib is disposed alternately in the transverse direction of the strap hinge.

12. The part according to claim 11 , wherein the strap hinge is a sheet of fabric.