Airbag flap system having peripheral depressions of variable material thickness

Airbag flap system for triggering an airbag of a vehicle dashboard in a fragment-free manner at sub-zero temperatures, having:

• a lid assembly which points towards a vehicle interior and which comprises a polymer, wherein the lid assembly has a frame body having at least one flap segment which has peripheral depressions;
• wherein the peripheral depressions generate at least one rectangular basic structure;
• and
• a deployment chute assembly which is connected to the lid assembly and comprises a polymer, wherein the deployment chute assembly has a main body and at least one flap body;
• wherein the main body is configured so as to cover the frame body, and wherein the at least one flap body is configured so as to cover the at least one flap segment;
• wherein the peripheral depressions of the rectangular basic structure of the lid assembly have at least two different material thicknesses;
• wherein the two different material thicknesses of the peripheral depressions of the at least one rectangular basic structure are divided into a first material thickness and a second material thickness;
• wherein the peripheral depressions having the first material thickness as opening depressions form at least one U-structure which has one transverse depression and two parallel depressions;
• wherein at least one further peripheral depression having the second material thickness which is greater than the first material thickness is configured as a pivot depression which extends in each case from one end of a first parallel depression to a respective opposite end of a second parallel depression;
• and
• wherein the opening depressions along external corners of the one or both adjacent rectangular basic structure/structures are disposed in such a manner that the opening depressions extend at least partially across a respective defined distance along a respective axis of the pivot depressions.