Abstract: A airbag arranged on a vehicle roof for protecting the occupant located under which includes a cushion (11), a gas generator (13) and an outer cover (17) with a weakened area (45) to allow cushion (11) exit, further comprising an inner casing (23) including a fixing area (31) for fixing it to a vehicle roof header (29), an area (33) for housing the generator (33) and a diffusion channel (35) for diffusing the gas into the cushion (11), having a first portion (51) of the cushion (11) located along the inner contour of the inner casing (33) such that the gas is received in the initial area of the diffusion channel (35) and a second portion (53) located, in the folded state, in an enclosure demarcated by at least portions of the inner casing (33) and outer cover (17).

Abstract: A airbag arranged on a vehicle roof for protecting the occupant located under which includes a cushion (11), a gas generator (13) and an outer cover (17) with a weakened area (45) to allow cushion (11) exit, further comprising an inner casing (23) including a fixing area (31) for fixing it to a vehicle roof header (29), an area (33) for housing the generator (33) and a diffusion channel (35) for diffusing the gas into the cushion (11), having a first portion (51) of the cushion (11) located along the inner contour of the inner casing (33) such that the gas is received in the initial area of the diffusion channel (35) and a second portion (53) located, in the folded state, in an enclosure demarcated by at least portions of the inner casing (33) and outer cover (17).

Abstract: The present invention relates to an airbag intended for retaining the knees of the occupants of automotive vehicles during a collision consisting of an inflatable cushion (11), a gas generator (7) providing the gas for inflating the cushion, a diffuser tube (9) connected to the gas generator (7) which is fixed to the inflatable cushion (11) along one of its sides, a metal housing (13, 39) for supporting the airbag assembly and fixing it to the vehicle and a protective cover (15, 17, 35) in which the cushion is folded such that a part remains deployed in the Y direction. The airbag has a reduced volume, is easily integrated in the automobile structure and can be very quickly positioned in the event of a collision without the risk of it being able to deploy between the knees of the occupant.