A roof airbag for vehicles and a control method to deploy the roof airbag are proposed. The roof airbag, which protects occupants by minimizing reduction of internal pressure of the airbag in an accident event in which a vehicle rolls over several times in sequence, includes: a main inflator and sub-inflator which generate gas; and a controller configured to ignite the main inflator to deploy an airbag cushion when a rollover accident of a vehicle occurs, and configured to ignite the sub-inflator to increase internal pressure of the airbag cushion when a secondary accident occurs following the primary rollover accident of the vehicle.

A curtain airbag for a vehicle may include: a main chamber installed between a headliner and a vehicle body and provided to be downwardly unfolded to the interior of the vehicle; a diffuser being provided at an inlet portion of the main chamber connected with an inflator, formed with a first outlet and a second outlet which receive and discharge gas from the inflator; and an additional chamber connected with the second outlet of the diffuser and communicated with the second outlet to receive gas from the diffuser and inflated between the headliner and the vehicle body to separate the headliner from the vehicle body. In particular, the diffuser includes a joined portion to close partially or fully the first outlet, and the diffuser increases the gas supply to the main chamber when the joined portion is opened by an internal pressure of the diffuser.

An occupant protection system for a vehicle may include an expandable curtain and/or an expandable bladder configured to be expanded from a stowed state to a deployed state. The system may also include a transverse ceiling trim panel and one or more side ceiling trim panels configured to be coupled to a ceiling of the vehicle, with the transverse ceiling trim panel extending substantially transversely with respect to the one or more side ceiling trim panels. Portions of the ceiling trim panels may be configured to deflect and allow expansion of the expandable curtain and/or the expandable bladder to the deployed state. The system may also include a deployment controller and one or more inflators configured to cause deployment of the expandable curtain at a first time and deployment of the expandable bladder at a second time after the first time.

An air bag device for a vehicle seat has a first air bag portion to be attached to at or close to a first lateral side of a backrest and a second air bag portion to be attached to a second lateral side of a backrest. The first air bag portion and second air bag portion are connected with each other by a third air bag portion designed to be located along a part of the upper portion of a backrest. The air bag device is designed to, when mounted to a vehicle seat, limit the lateral movement of the torso of an occupant and protect an occupant. The third portion will contribute with an increased stability of the air bag device when deployed. The air bag device may be adapted to protect the head of an occupant from injuries.

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a roof (32) and a cabin (40) with a seat (50) for the occupant (60) includes an airbag (120) having a stored condition within the roof (32) and being inflatable to deployed condition extending into the cabin (40) aligned with the seat (50). A tether (140) includes a first end (142) connected to the airbag (120) and a second end (144) connected to the vehicle (20). Tear stitching (170) interconnects overlying portions (152, 154) of the tether (140). The tear stitching (170) is rupturable in response to occupant (60) penetration into the deployed airbag (120) to permit the interconnected overlying portions (151, 154) to move relative to one another such that the tether (140) lengthens.

One general aspect includes a system to establish a deployment force for an airbag of a vehicle, the system includes: a memory configured to include one or more executable instructions and a processor configured to execute the executable instructions, where the executable instructions enable the processor to carry out the following steps: monitoring a head position of a vehicle occupant; based on the monitored head position, calculating a distance of a body part of a vehicle operator relative to a portion of an interior cabin of the vehicle; and based on the distance of the body part, establishing the deployment force for the airbag.

An assembly includes a seatback having an upright frame member and a side airbag mounted to the upright frame member. The side airbag is inflatable to an inflated position. The side airbag includes a forward chamber and a spacer chamber adjacent each other and substantially fluidly separated from each other in the inflated position. At least one inflator is in fluid communication with the forward chamber and the spacer chamber.

An assembly includes a front console having an outer surface and a pair of outboard ends spaced along an axis and defining a center therebetween. The assembly includes an airbag supported by the front console at one of the outboard ends and inflatable from an uninflated position elongated transverse to the axis to an inflated position extending along the outer surface toward the center.

An adaptive force vehicle airbag (AFVA) system includes airbag(s) stowed in a compressed state within an interior of a vehicle. An impact sensor detects a change in motion of the vehicle indicative of a collision. Selectable force gas generator(s) (SFGGs) gas-generating propellant cells that are individually fired. The SFGGs have conduit(s) that receive gas from fired gas-generating propellant cells and direct the gas to inflate at least one of the airbag(s). A controller is communicatively coupled to the inflation initiating component and the gas-generating propellant cells of the SFGGs. The controller enables the AFVA system to: (i) receive an inflation signal from the impact sensor; and (ii) fire a selected number of the gas-generating propellant cells to at least partially inflate the at least one airbag.

The invention relates to an airbag system for a vehicle, including a first airbag and a second airbag situated largely above the first airbag in the intended main supporting direction. Both airbags may be triggered chronologically. In the airbag system both airbags may include a separate gas supply and may effectively interact to provide a larger airbag volume without substantial loss of time. When both airbags are activated, the second airbag deploys largely on the surface of the first airbag. Due to the separate gas supply, both airbags may be triggered simultaneously and independently of one another. It is also possible for only the second airbag to be triggered and for the first airbag to remain inactive. Thus, the airbag system covers a wider range of load conditions. The system helps by allowing the vehicle occupants more freedom in choosing their sitting positions.