In a vehicle occupant protection system a first tether is permanently fastened to a front panel of the airbag and is detachably fixed to an actuator unit on the module side. A second tether is arranged on the module side and is connected to the first tether, wherein in an extension of the second tether there is provided a decoupling arrangement which is located in the flow of forces between the second tether and the first tether only when the actuator unit is activated. In order to protect the vehicle occupant, when a vehicle seat is in a first sitting position, an airbag of the airbag module is filled with a first smaller volume and, in response to a height of the vehicle occupant sitting in the vehicle seat, a venting device is opened or closed. When the vehicle seat is in a second sitting position, the airbag is filled with a second larger volume and the venting device is opened.

An airbag device includes an actuator of a configuration that causes a string-form coupling member extending from an airbag to be coupled, and controls an inflation aspect of the airbag by causing a state of coupling with the coupling member to be maintained or terminated. The actuator includes a gas generator that can eject a combustion gas and a holder portion that can hold the coupling member. The holder portion includes a holding wall portion, which can hold the wound coupling member on an outer peripheral face side, and a top wall portion that closes a leading end side of the holding wall portion, and a contact region in which the combustion gas can be brought into contact with the coupling member is disposed in a region of the holding wall portion. The actuator causes the coupling member to be severed by causing the combustion gas to come into contact with the coupling member in the contact region, whereby a state of the coupling member being held in the holder portion can be terminated.

An airbag device includes an actuator of a configuration that causes a string-form coupling member extending from an airbag to be coupled, and controls an inflation aspect of the airbag by causing a state of coupling with the coupling member to be maintained or terminated. The actuator includes a gas generator that can eject a combustion gas and a holder portion that can hold the coupling member. The holder portion includes a holding wall portion, which can hold the wound coupling member on an outer peripheral face side, and a top wall portion that closes a leading end side of the holding wall portion, and a contact region in which the combustion gas can be brought into contact with the coupling member is disposed in a region of the holding wall portion. The actuator causes the coupling member to be severed by causing the combustion gas to come into contact with the coupling member in the contact region, whereby a state of the coupling member being held in the holder portion can be terminated.

An occupant protection device, for a vehicle which protects an occupant seated on a seating surface of a seat, includes: a first push-up mechanism which pushes up a waist portion of the occupant by raising a rear portion of the seating surface; a second push-up mechanism which pushes up a thigh portion of the occupant by raising a front portion of the seating surface; and a control unit which controls operations of the first push-up mechanism and the second push-up mechanism. The control unit operates the first push-up mechanism and then operates the second push-up mechanism when an impact applied to the vehicle from the front of the seat is detected or predicted.

An occupant protection device, for a vehicle which protects an occupant seated on a seating surface of a seat, includes: a first push-up mechanism which pushes up a waist portion of the occupant by raising a rear portion of the seating surface; a second push-up mechanism which pushes up a thigh portion of the occupant by raising a front portion of the seating surface; and a control unit which controls operations of the first push-up mechanism and the second push-up mechanism. The control unit operates the first push-up mechanism and then operates the second push-up mechanism when an impact applied to the vehicle from the front of the seat is detected or predicted.

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 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.

[Problem]

Provided is an airbag device capable of improving the restraining performance of an occupant by an airbag at the time of a collision.

[Resolution Means]

The airbag device includes a first airbag cushion part and a second airbag cushion part installed on each side of a seat of a vehicle, a first active vent provided in the first airbag cushion part and a second active vent provided in the second airbag cushion part, and a controller that controls the first active vent or the second active vent to open and the other to close when the first airbag cushion part and the second airbag cushion part are expanded and deployed.

[Problem]

Provided is an airbag device capable of improving the restraining performance of an occupant by an airbag at the time of a collision.

[Resolution Means]

The airbag device includes a first airbag cushion part and a second airbag cushion part installed on each side of a seat of a vehicle, a first active vent provided in the first airbag cushion part and a second active vent provided in the second airbag cushion part, and a controller that controls the first active vent or the second active vent to open and the other to close when the first airbag cushion part and the second airbag cushion part are expanded and deployed.

A tether actuation unit includes an actuator configured to form a connection with a tether that is releasable in response to actuation of the actuator, and a housing configured to receive the actuator. The housing includes a tether channel configured to allow the tether to extend therethrough. The tether channel includes sidewalls configured to receive and engage the tether along a portion of its length when the tether extends at an angle from the housing. The sidewalls of the tether channel are configured to limit movement of the tether in response to airbag deployment in order to limit tension applied to the actuator by the tether to a predetermined range of non-orthogonal directions with respect to a central axis of the actuator.