Vehicle occupant protection device
A vehicle occupant protection device includes: an airbag structured as a single bag that is configured to cover a head area of a vehicle occupant, the airbag being stowed at a headrest or seatback of a vehicle seat, the airbag receiving a gas supply and inflating and expanding toward a seat front side, and the airbag including a front inflation portion that is configured to be inflated at the seat front relative to the head area and a left and right pair of side inflation portions that are connected to the front inflation portion and configured to be inflated at seat sides relative to the head area; and an opening portion that is provided at the airbag, is configured to cover the head area from the seat front side or a seat side, and is openable after the inflation and expansion of the airbag.
1. A vehicle occupant protection device comprising:
an airbag structured as a single bag that is configured to cover a head area of a vehicle occupant, the airbag being stowed at a headrest or seatback of a vehicle seat, the airbag receiving a gas supply and inflating and expanding toward a seat front side, and the airbag including
a front inflation portion that is configured to be inflated at the seat front relative to the head area, and
a left and right pair of side inflation portions that are connected to the front inflation portion and configured to be inflated at seat sides relative to the head area; and
an opening portion that is provided at the airbag, is configured to cover the head area from the seat front side or a seat side, and is openable after the inflation and expansion of the airbag, wherein
the opening portion includes a plurality of opening hooks at a periphery edge portion thereof, and
the airbag includes opening engaging portions with which the plurality of opening hooks are respectively detachably engaged.
2. The vehicle occupant protection device according to claim 1 , wherein
the airbag is stowed in the headrest or the seatback together with the opening portion in a folded state, and
the plurality of opening hooks are disposed to be staggered such that neighboring the opening hooks do not overlap in the state in which the opening portion is folded.
3. The vehicle occupant protection device according to claim 1 , wherein each of the plurality of opening hooks includes a grippable strap.
4. A vehicle occupant protection device comprising:
an airbag structured as a single bag that is configured to cover a head area of a vehicle occupant, the airbag being stowed at a headrest or seatback of a vehicle seat, the airbag receiving a gas supply and inflating and expanding toward a seat front side, and the airbag including
a front inflation portion that is configured to be inflated at the seat front relative to the head area, and
a left and right pair of side inflation portions that are connected to the front inflation portion and configured to be inflated at seat sides relative to the head area;
an opening portion that is provided at the airbag, is configured to cover the head area from the seat front side or a seat side, and is openable after the inflation and expansion of the airbag; and
a connecting cloth that extends in a seat front-rear direction and connects up the airbag in the seat front-rear direction in the inflated and expanded state, the connecting cloth including a connection release hook, at least one of one end portion, and another end portion of the connecting cloth,
wherein the airbag includes a connection release engaging portion with which the connection release hook detachably engages.