US 11,833,990 B2
Side airbag device, vehicle seat provided with same, and method for manufacturing side airbag device
Yuto Kobayashi, Kanagawa (JP); Hiroyuki Shima, Kanagawa (JP); and Tsutomu Sakurai, Kanagawa (JP)
Assigned to Autoliv Development AB, Vargarda (SE)
Appl. No. 17/309,762
Filed by Autoliv Development AB, Vargarda (SE); Yuto Kobayashi, Kanagawa (JP); Hiroyuki Shima, Kanagawa (JP); and Tsutomu Sakurai, Kanagawa (JP)
PCT Filed Oct. 18, 2019, PCT No. PCT/JP2019/041061
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/129386, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-240381 (JP), filed on Dec. 21, 2018.
Prior Publication US 2022/0055570 A1, Feb. 24, 2022
Int. Cl. B60R 21/231 (2011.01); B60R 21/207 (2006.01); B60R 21/215 (2011.01); B60R 21/217 (2011.01); B60R 21/233 (2006.01); B60R 21/237 (2006.01)
CPC B60R 21/23138 (2013.01) [B60R 21/207 (2013.01); B60R 21/215 (2013.01); B60R 21/2171 (2013.01); B60R 21/233 (2013.01); B60R 21/237 (2013.01); B60R 2021/23146 (2013.01); B60R 2021/23324 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A side airbag device for storage within a vehicle seat and securement to a side frame of the vehicle seat, the side airbag device comprising:
an airbag for restraining an occupant when expanded and deployed;
an inflator for supplying expansion gas to the airbag,
a bracket retaining the airbag and the inflator and for connection to the side frame; and
a flexible cover member covering the airbag when folded,
wherein:
the airbag includes a pre-push chamber with the inflator stowed inside and deploys primarily on an occupant side of the side frame, and a main chamber that is connected to the pre-push chamber and deploys primarily toward a front of the side frame, the main chamber partitioned into a forward chamber and a rear chamber,
the bracket includes a first surface that faces a forward direction of vehicle travel and a second surface that faces a center side of the vehicle seat in a width direction,
and at least the main chamber is arranged adjacent to the first surface of the bracket when the airbag is in a folded and/or rolled stowed state,
the first surface of the bracket defines a first reaction surface directly opposing the main chamber in the forward direction of travel upon inflation of the airbag and the second surface defines a second reaction surface directly opposing the pre-push chamber in a lateral direction, and
wherein the first surface of the bracket is defined by a first plate and the flexible cover member has slits into which upper and lower portions of the first plate are inserted, respectively.