US 12,172,596 B2
Air bag device for pedestrian protection and method for producing same
Akifumi Hanawa, Kanagawa (JP); Satoshi Ito, Kanagawa (JP); and Atsushi Tamura, Kanagawa (JP)
Assigned to Autoliv Development AB, Vargarda (SE)
Appl. No. 18/249,905
Filed by Autoliv Development AB, Vargarda (SE)
PCT Filed Oct. 12, 2021, PCT No. PCT/JP2021/037748
§ 371(c)(1), (2) Date Apr. 20, 2023,
PCT Pub. No. WO2022/091770, PCT Pub. Date May 5, 2022.
Claims priority of application No. 2020-179225 (JP), filed on Oct. 26, 2020.
Prior Publication US 2024/0010159 A1, Jan. 11, 2024
Int. Cl. B60R 21/36 (2011.01); B60R 21/233 (2006.01); B60R 21/235 (2006.01); B60R 21/34 (2011.01)
CPC B60R 21/36 (2013.01) [B60R 21/233 (2013.01); B60R 2021/23324 (2013.01); B60R 2021/23533 (2013.01); B60R 2021/346 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pedestrian protection airbag device comprising:
an airbag for expansion and deployment for protecting a pedestrian from a collision with a vehicle;
wherein:
the airbag includes a center chamber for extending in a width direction of the vehicle proximate a lower edge of a windshield, and first and second side chambers for respectively extending upward from both left and right end sections of the center chamber at least along a respective A-pillar of the vehicle, and is configured such that gas supplied from at least one inflator flows from the center chamber to the first and second side chambers,
left and right partition panels, the left and right partition panels both extend completely from a back side of the airbag to a front side of the airbag,
a first folded section having a first location corresponding with the left partition panel, the first side chamber folded back at the first folded section toward the center chamber, and
a second folded section having a second location corresponding with the right partition panel, the second side chamber folded back toward the center chamber in a stowed state of the airbag,
wherein in the stowed state of the airbag, the first side chamber and the second side chamber both overlap the center chamber and the first and second side chambers overlap each other,
wherein the left and right partition panels partition the center chamber and the first and second side chambers proximate the first and second folded sections, respectively, and
wherein in the stowed state of the airbag, a front section of the airbag is folded in a longitudinal direction, the longitudinal direction extending in a front-to-back direction of the airbag, the front section of the airbag is rolled rearward in the longitudinal direction, and upper sections of the first and second side chambers are folded forward.