US 12,128,848 B2
Roof airbag for vehicle
Byung Ho Min, Yongin-Si (KR); and Hae Kwon Park, Yongin-Si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Aug. 10, 2023, as Appl. No. 18/447,427.
Application 18/447,427 is a continuation of application No. 17/555,954, filed on Dec. 20, 2021, granted, now 11,745,688.
Claims priority of application No. 10-2021-0000920 (KR), filed on Jan. 5, 2021; and application No. 10-2021-0003459 (KR), filed on Jan. 11, 2021.
Prior Publication US 2023/0382343 A1, Nov. 30, 2023
Int. Cl. B60R 21/214 (2011.01); B60R 21/231 (2011.01); B60R 21/2338 (2011.01); B60R 21/237 (2006.01); B60R 21/233 (2006.01)
CPC B60R 21/214 (2013.01) [B60R 21/231 (2013.01); B60R 21/2338 (2013.01); B60R 21/237 (2013.01); B60R 2021/23161 (2013.01); B60R 2021/23316 (2013.01); B60R 2021/23382 (2013.01); B60R 2021/23386 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A roof airbag for a vehicle, comprising:
an airbag cushion folded in a circular shape and configured to inflate and unfold downwardly from a roof of the vehicle when a gas is supplied from an inflator, the airbag cushion having first and second surfaces mutually facing in opposite directions, the second surface configured to be touched by a passenger when the airbag cushion is unfolded downwardly;
a main tether having both ends respectively connected to upper and lower end portions of the first surface of the airbag cushion, the main tether being shorter than a vertical length of the airbag cushion so as to cause the airbag cushion to bend when the airbag cushion is unfolded; and
a plurality of sub-tethers configured to guide unfolding of the airbag cushion when the airbag cushion is unfolded, each sub-tether at least partially covering the second surface of the airbag cushion and having a first end connected to the roof and a second end connected to one of a plurality of side edge portions of the second surface of the airbag cushion so as to prevent the airbag cushion from interfering with the unfolding of the sub-tether.