Air bag device
An airbag device in which the deployment behavior of a cushion is stable when expanded and deployed and the cushion does not tilt while restraining an occupant, even in a vehicle in which a console box is lower than the upper surface of a seat cushion or in a vehicle without a console box. The airbag device 1 includes a cushion 2 and an inflator 3 that injects gas to expand the cushion 2 . The cushion 2 has a main chamber 2 d that expands and deploys on one side of the occupant, and a lower chamber 2 e that extends downward from a part of the main chamber 2 d . The lower chamber 2 e is formed so that, when expanded and deployed, a lower end part of the lower chamber 2 e can come into contact with the upper surface of a console box.
1 . An airbag device installed on a vehicle center side surface of a seat backrest of one of seats arranged side by side in the width direction of the vehicle, comprising:
a cushion; and
an inflator that injects gas to expand the cushion, wherein the cushion includes:
a main chamber that expands and deploys on one side of the seat; and
a lower chamber extending downward from a part of the main chamber, and
the lower chamber is formed so that when expanded and deployed, a lower end part of the lower chamber can come into contact with an upper surface of a console box positioned lower than an upper surface of a seat cushion of the seat or with a floor of the vehicle.
2 . The airbag device according to claim 1 , wherein the main chamber includes:
a first portion that receives a side of an occupant sitting in one of the seats;
a second portion that receives a side of an occupant sitting in another of the seats; and
a central portion provided between the first portion and second portion, and
the lower chamber extends downward from the central portion.
3 . The airbag device according to claim 2 , wherein the main chamber is formed by continuously and integrally forming the first portion, the central portion and the second portion, and the lower chamber is formed as a separate chamber segregated from the main chamber.
4 . The airbag device according to claim 3 , wherein the main chamber and the lower chamber are in communication through a first vent hole.
5 . The airbag device according to claim 4 , wherein the inflator is attached to the main chamber and a part of the gas injected from the inflator is supplied from the main chamber, through the first vent hole, and into the lower chamber.
6 . The airbag device according to claim 2 , further comprising a protruding part provided in the central portion that protrudes in a forward direction of the vehicle at least further than the first portion and the second portion when the cushion is expanded and deployed, and that is capable of receiving a head of the occupant and the occupant moving diagonally forward.
7 . The airbag device according to claim 6 , wherein the main chamber is formed by continuously and integrally forming the first portion, the central portion and the second portion, and the protruding part is formed as a separate chamber segregated from the main chamber.
8 . The airbag device according to claim 7 , wherein the main chamber and the protruding part are in communication through a second vent hole.
9 . The airbag device according to claim 6 , further comprising a connecting member connecting a lower front portion of the protruding part and a bottom front portion of the lower chamber.
10 . The airbag device according to claim 6 , further comprising a connecting member connecting a lower front portion of the protruding part and a lower front portion of the central portion.