Airbag module of a vehicle passenger restraint system

A knee airbag module of a vehicle occupant restraint system, comprising:

• a folded inflatable airbag for restraining a vehicle occupant,
• a module housing which includes a flexible airbag sheath at least partially enclosing the folded airbag, and
• a module cover which includes fasteners for fastening the module cover to the module housing,
• the flexible airbag sheath of the module housing being fixed directly to said fasteners,
• wherein at least one flexible anchoring element is provided which extends between the folded airbag and the module cover and limits expansion of the folded airbag toward the module cover,
• wherein a module longitudinal axis in the installed state of the airbag module extends in the vehicle transverse direction, wherein the at least one flexible anchoring element is designed as a flexible anchoring strap which extends with respect to the module longitudinal axis in the circumferential direction from a first strap end at least partially around the folded airbag to a second strap end,
• wherein both the folded airbag and an inflator for inflating the airbag are accommodated in a holding space defined by the module housing and the module cover, wherein the first strap end is fastened to the inflator,
• and wherein, on the opposite side edges of an anchoring strap between the first strap end and the second strap end, there are provided strap extensions each of which extends from the anchoring strap to an adjacent axial end of the module cover and is fixed there.