US 11,724,659 B2
Knee air bag and control method of deploying the same
Hyo Shub Shin, Seoul (KR); and Yu Ji Son, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Oct. 26, 2021, as Appl. No. 17/510,762.
Claims priority of application No. 10-2021-0048912 (KR), filed on Apr. 15, 2021.
Prior Publication US 2022/0332276 A1, Oct. 20, 2022
Int. Cl. B60R 21/206 (2011.01); B60R 21/231 (2011.01)
CPC B60R 21/206 (2013.01) [B60R 2021/23107 (2013.01); B60R 2021/23169 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A knee air bag, comprising:
a first cushion configured to be deployed from an inner side of a crash pad toward an occupant to fill a space below the crash pad;
a second cushion configured to be deployed between the first cushion and the occupant to support legs of the occupant while being supported on the first cushion;
a seat position sensor configured to detect an attitude of a seat at which the knee air bag is installed;
an occupant detection sensor configured to detect a state of the occupant sitting on the seat; and
a controller configured to control deployment operations of the first cushion and the second cushion according to the attitude of the seat and the sitting state of the occupant;
wherein the controller is configured to detect the attitude of the seat and the sitting state of the occupant to determine whether the second cushion be deployed or not and a gas pressure for deploying the first cushion.