A roof airbag apparatus may include: a cushion configured to cover a roof when deployed; a pair of guides having a length in the deployment direction of the cushion, and configured to guide both sides of the cushion in the deployment direction; and a deployment resistance reducer having a connector connected to one end of each of the guides so as to apply an elastic force from a first location toward the rear, wherein the connector is moved to a second location in a front of the first location by frictional resistance which is applied to the guide when the cushion is deployed.

A roof airbag for a vehicle longitudinally extends along a length between first and second longitudinal ends and laterally extends along a width between first and second lateral sides. An inlet for receiving inflation gases is provided at the first longitudinal end. A plenum is in fluid communication with the inlet for receiving the inflation gases from the inlet. The roof airbag includes a plurality of primary inflatable chambers, each primary inflatable chamber in fluid communication with the plenum to receive inflation gases from the plenum. A plurality of secondary inflatable chambers is in indirect fluid communication with the plenum to receive inflation gases indirectly from the plenum through the plurality of primary inflatable chambers. The primary inflatable chambers of the plurality of primary inflatable chambers are arranged to first drive deployment of the airbag and subsequently inflate the second inflatable chambers of the plurality of second inflatable chambers to tension the airbag in the lateral direction. The primary and secondary inflatable chambers cooperate to provide a barrier between occupants of the vehicle and the roof frame.

A guide assembly for a roof airbag arrangement of a vehicle includes a guide member, at least a first sliding member and a locking member. The first sliding member is carried by the guide member and translatable relative to the guide member along a translation axis. The locking member is carried by the guide member and is operable in a first position to permit the first sliding member to translate past the locking member in a first direction and operable in a second position to prevent translation of the first sliding member past the locking member in a second direction. The second direction being opposite to the first direction.

An automotive front seat overhead airbag includes a supporting air chamber and a protective air chamber mounted on a roof. The supporting air chamber is inflated from the roof towards a dashboard upon inflation. The protective air chamber is in communication with the supporting air chamber. After the supporting air chamber is inflated, the protective air chamber is inflated from the supporting air chamber towards the human body. A first protective space is reserved between the supporting air chamber and the protective air chamber on a side facing the human body. The first protective space corresponds to the head of the human body for protecting the head and neck of the human body. An automobile includes a roof and a dashboard, and further includes the automotive front seat overhead airbag described above. An upper end of the supporting air chamber is connected to a gas generator.

Proposed is a roof airbag that is disposed at the roof of a vehicle and is deployed into an interior space of the vehicle. A bracket is provided to the roof. An inflator is connected to the bracket and configured to discharge an inflation gas when operated. An airbag cushion is provided to an airbag cover connected to the bracket in a foldable way and deployed into an interior space of the vehicle by the inflation gas supplied by the inflator. A tether is configured such that one end thereof is fixed to the roof side, and the other end of which is connected to the airbag cushion. The tether supports the airbag cushion so that, when the airbag cushion is deployed, the airbag cushion is deployed toward a seat.

A roof-mounted airbag includes a cushion having a first chamber and a second chamber deployed downward from a vehicle roof while being inflated toward passengers facing each other, and a support chamber deployed between the first chamber and the second chamber and configured to push intermediate portions of the first and second chambers toward the passengers facing each other.

A roof mounted airbag is proposed. The roof mounted airbag includes: an airbag cushion having an upper portion fixed to a roof of a vehicle and configured to be expanded downward when gas is supplied therein; a vent hole formed on the airbag cushion, and configured to discharge the gas in the airbag cushion to the outside of the airbag cushion during opening of the vent hole; and a closing tether having a first end fixed to the roof of the vehicle, and a second end connected to the vent hole to close the vent hole when tension is applied thereto.

A roof airbag arrangement includes an airbag, first and second guide rails, at least one first sliding member and at least one second sliding member. The airbag longitudinally extends along a length between first and second longitudinal sides and laterally extending along a width between first and second lateral sides. The first and second guide rails are on laterally opposite sides of the airbag, and define first and second channels, respectively. The at least one first sliding member is mounted within the first guide rail for translation within the first channel. The at least one second sliding member is mounted within the second guide rail for translation within the second channel. First and second pluralities of tethers connect the first lateral side of the airbag with the at least one first sliding member and the second lateral side of the airbag with the at least one second sliding member, respectively.

A guide assembly for a roof airbag arrangement of a vehicle includes a guide member, at least a first sliding member and a locking member. The first sliding member is carried by the guide member and translatable relative to the guide member along a translation axis. The locking member is carried by the guide member and is operable in a first position to permit the first sliding member to translate past the locking member in a first direction and operable in a second position to prevent translation of the first sliding member past the locking member in a second direction. The second direction being opposite to the first direction.

A roof airbag for vehicles is proposed. The roof airbag includes: a main chamber configured to be deployed as gas is introduced therein through a diffuser; and an overlap chamber into which the gas may be introduced and configured to be deployed into a shape that overlaps the main chamber around the diffuser.