A passenger seat airbag device, comprising:
- an airbag that is disposed in front of an occupant seated in a passenger seat and is folded and stored in a storage portion;
- an inflator that supplies a an inflation gas to the airbag;
- and
- a control mechanism that controls an inflation shape of the airbag, wherein
- the airbag is configured to include:
- a bag main body formed in a bag shape having flexibility, and configured to have an occupant-side wall portion disposed to face the occupant on a rear end side at a time of full inflation, and a peripheral wall portion extending from a peripheral edge of the occupant-side wall portion and converged toward a front end side, in which an inflow opening for allowing the inflation gas to flow into an inside of the bag main body is arranged on a front end side of the peripheral wall portion, and a peripheral edge of the inflow opening is attached to a side of the storage portion;
- and
- a regulation member configured to be an elongated body having flexibility, and disposed in the bag main body to regulate an inflation shape of the bag main body,
- at least two insertion ring portions through which a base end portion of the regulation member enables to be inserted are provided at each of at least two positions facing each other in an up-down direction or a left-right direction, on an inner peripheral surface side of the peripheral wall portion, in which the insertion ring portions provided on one side in the up-down direction or the left-right direction are arranged to be separated from each other in a front-rear direction,
- at least two of the regulation members are arranged to face each other in the up-down direction or the left-right direction, corresponding to the insertion ring portions, and in each of the regulation members, a loop portion that couples the respective insertion ring portions by forming a loop shape in a state of being inserted through the respective insertion ring portions separately arranged in the front-rear direction is provided on a side of the base end portion, and a distal end portion of the regulation members is coupled to the control mechanism disposed in a vicinity of the inflow opening, and
- the loop portion is configured,
- when the bag main body is inflated in a state where coupling between the regulation member and the control mechanism is maintained, to pull the insertion ring portions separately arranged in the front-rear direction in a state where adjacent insertion ring portions are close to each other and a portion of the peripheral wall portion disposed between the adjacent insertion ring portions is folded, and
- at the time of full inflation of the bag main body in a state where the coupling between the regulation member and the control mechanism is released, such that the portion of the peripheral wall portion disposed between the adjacent insertion ring portions is deployed in the front-rear direction.