Airbag cover with controlled tear lines

An airbag cover (11) for automotive vehicles formed by a container body (13) provided so as to be fixed to the airbag module and an upper surface (15) made of a plastic material so as to be visible in the vehicle including a plurality of tear lines (21, 22, 23) on the inner face of said upper surface (15) formed by weakened areas defined by the lines where its tearing will occur during the deployment of the cushion of the airbag, said tear lines (21, 22, 23) being designed so as to form flaps (17, 17′) after said deployment which remain joined to the cover (11) in the area thereof defined between the ends of two tear lines (21, 23) close to the container body (13), characterized in that in at least one of said flaps (17):

• a) the ends of said tear lines (21, 23) are designed with a curved shape with its end parts (25, 27) aimed towards the inside of said upper surface (15);
• b) the cover (11) includes reinforcement ribs (19) to prevent the detachment of the flap (17) which are located close to said end parts (25, 27) of the tear lines (21, 23) and are joined both to the container body (13) and to the inner part of the upper surface (15) of the cover (11).