| 主权项 |
1. A cover door for an airbag module, comprising a frame having at least one wall forming a shooting channel and defining a deployment trajectory of an airbag and an upper aperture extending at the end of said wall, and a lid covering at least one portion of the upper aperture and movable relatively to the frame so as to clear the upper aperture and allow deployment of the airbag along the deployment trajectory through the upper aperture, the lid being attached to the wall through a hinge-forming area, the hinge-forming area comprising at least one central hinge connecting a central portion of the lid to the frame, and at least one side hinge connecting a side portion of the lid to the frame, the side hinge having a greater length than the length of the central hinge, characterized in that the central hinge and the side hinge each comprise a frame joining portion, a deployment portion having a U-shaped section, and a lid-joining portion, the frame-joining portion being a portion of each hinge between one extreme end of the U-shaped section and the frame, the lid-joining portion being a portion of each hinge between the other extreme end of the U-shaped section and the lid, the deployment portion extending inside the shooting channel, and the frame joining portion extending in alignment with the wall and outside the shooting channel, the length of the frame joining portion of the side hinge being greater than the length of the frame-joining portion of the central hinge,
the frame comprising an attachment portion for attachment to a support, said attachment portion extending around the upper aperture substantially in the plane of said upper aperture and being attached to the wall, and the side hinge, the wall and the attachment portion joining up in a junction area substantially extending in a plane shifted relatively to the plane of the upper aperture, so as to increase the length of the side hinge relative to the central hinge. |
