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.

An apparatus for helping to protect an occupant of a vehicle seat includes an airbag defining an inflatable volume for receiving inflation fluid from an inflator having first and second ends. The airbag has a first sleeve configured to receive the first end of the inflator and a second end configured to receive the second end of the inflator. The first and second sleeves extend from the airbag.

An airbag apparatus of a vehicle. In the airbag apparatus, a plurality of inflators is connected to a roof airbag, and the plurality of inflators is selectively operated according to the information of an occupant boarded in the vehicle, whereby the roof airbag expands to optimize for the occupant in the vehicle and safely protects the occupant.

An airbag apparatus of a vehicle. In the airbag apparatus, a plurality of inflators is connected to a roof airbag, and the plurality of inflators is selectively operated according to the information of an occupant boarded in the vehicle, whereby the roof airbag expands to optimize for the occupant in the vehicle and safely protects the occupant.

A roof airbag for a vehicle. The roof airbag includes: a main cushion located at a roof panel of the vehicle and configured to be unfolded from a first side portion to a second side portion of the roof panel when being operated; a sub cushion coupled to a side surface of the extended main cushion and unfolded outside the main cushion; and an inflator located at the roof panel of the vehicle and connected to the main cushion or the sub cushion, and configured to inject gas into the main cushion and the sub cushion to unfold the main cushion and the sub cushion.

A roof airbag for a vehicle. The roof airbag includes: a main cushion located at a roof panel of the vehicle and configured to be unfolded from a first side portion to a second side portion of the roof panel when being operated; a sub cushion coupled to a side surface of the extended main cushion and unfolded outside the main cushion; and an inflator located at the roof panel of the vehicle and connected to the main cushion or the sub cushion, and configured to inject gas into the main cushion and the sub cushion to unfold the main cushion and the sub cushion.

A side airbag apparatus includes an inflator, an airbag having a main inflation portion and an auxiliary inflation portion, and a restriction portion. The main inflation portion is configured to be inflated by inflation gas supplied from the inflator and deployed forward in a space between a side wail of the vehicle and an occupant seated in a normal posture in a vehicle seat. The auxiliary inflation portion is configured to be inflated in a seat back by the inflation gas from the inflator, thereby pushing the occupant toward an inner side of the vehicle. The restriction portion restricts the auxiliary inflation portion from being inflated toward a gap that is between the rear end section in the outer side portion of the seat back and the rear end section in the middle portion of the seat back.

A side airbag apparatus includes an inflator, an airbag having a main inflation portion and an auxiliary inflation portion, and a restriction portion. The main inflation portion is configured to be inflated by inflation gas supplied from the inflator and deployed forward in a space between a side wail of the vehicle and an occupant seated in a normal posture in a vehicle seat. The auxiliary inflation portion is configured to be inflated in a seat back by the inflation gas from the inflator, thereby pushing the occupant toward an inner side of the vehicle. The restriction portion restricts the auxiliary inflation portion from being inflated toward a gap that is between the rear end section in the outer side portion of the seat back and the rear end section in the middle portion of the seat back.

In the side airbag device, in an inflation and deployment state of the side airbag, a tension cloth extendingly disposed across between a front-rear partition and a rear end of the rear bag section is stretched, thereby restricting inflation in the vehicle front-rear direction of the rear bag section. An inflating width in a vehicle width direction of the rear bag section can be increased without significantly changing a position in the vehicle front-rear direction of the front-rear partition. In a flat developed state of the side airbag, the tension cloth is extendingly disposed across between the front-rear partition so folded into two as to protrude toward the rear bag section, and the rear end of the rear bag section. Accordingly, dimensions of each component can be so defined as to cause no redundancy in the rear bag section in the flat developed state, thus compactly folding the side airbag.

In the side airbag device, in an inflation and deployment state of the side airbag, a tension cloth extendingly disposed across between a front-rear partition and a rear end of the rear bag section is stretched, thereby restricting inflation in the vehicle front-rear direction of the rear bag section. An inflating width in a vehicle width direction of the rear bag section can be increased without significantly changing a position in the vehicle front-rear direction of the front-rear partition. In a flat developed state of the side airbag, the tension cloth is extendingly disposed across between the front-rear partition so folded into two as to protrude toward the rear bag section, and the rear end of the rear bag section. Accordingly, dimensions of each component can be so defined as to cause no redundancy in the rear bag section in the flat developed state, thus compactly folding the side airbag.