US 9,809,189 B2
Vehicle side curtain airbag device having front protection function
Benedikt Grell, Shanghai (CN); David Hampson, Shanghai (CN); Zhijia Wang, Shanghai (CN); Xiaoguang Zhu, Shanghai (CN); and Paul Lincoln, Shanghai (CN)
Assigned to YANFENG KSS (SHANGHAI) AUTOMOTIVE SAFETY SYSTEMS CO., LTD., Shanghai (CN)
Appl. No. 15/22,598
Filed by YANFENG KSS (SHANGHAI) AUTOMOTIVE SAFETY SYSTEMS CO., LTD., Shanghai (CN)
PCT Filed May 6, 2014, PCT No. PCT/CN2014/076837
§ 371(c)(1), (2) Date Mar. 17, 2016,
PCT Pub. No. WO2015/039444, PCT Pub. Date Mar. 26, 2015.
Claims priority of application No. 2013 1 0425171 (CN), filed on Sep. 17, 2013.
Prior Publication US 2016/0229370 A1, Aug. 11, 2016
Int. Cl. B60R 21/213 (2011.01); B60R 21/232 (2011.01); B60R 21/233 (2006.01); B60R 21/2338 (2011.01); B60R 21/2342 (2011.01); B60R 21/239 (2006.01); B60R 21/2334 (2011.01); B60R 21/00 (2006.01); B60R 21/231 (2011.01)
CPC B60R 21/232 (2013.01) [B60R 21/213 (2013.01); B60R 21/233 (2013.01); B60R 21/239 (2013.01); B60R 21/2334 (2013.01); B60R 21/2342 (2013.01); B60R 21/23138 (2013.01); B60R 2021/0004 (2013.01); B60R 2021/0032 (2013.01); B60R 2021/0048 (2013.01); B60R 2021/23107 (2013.01); B60R 2021/23161 (2013.01); B60R 2021/23308 (2013.01); B60R 2021/23386 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A vehicle side curtain airbag device having frontal protective function, comprising a side airbag, wherein one side face of the side airbag (1) is connected to an end face of an additional airbag (2) which is in a left-right transverse arrangement after being inflated, wherein a connecting portion between the end face of the additional airbag (2) and the side airbag (1) share a layer of fabric and a diffluence hole membrane (3) is formed on the end face of the additional airbag (2), wherein a periphery of the diffluence hole membrane (3) is surrounded by that of the end face of the additional airbag (2), and wherein the diffluence hole membrane (3) has a plurality of seam lines sewn thereon, which are parallel to each other and configured to tear in response to a predetermined pressure in the side airbag (1), an outer profile defined by the plurality of seam lines has a geometric shape, and the diffluence hole membrane (3) is stacked or folded; and
if an impact force of a collision is less than a given value for opening the additional airbag (2), a gas generator charges gas into the side airbag (1) which expands downwards; if an impact force of a collision reaches the given value for opening the additional airbag (2), the gas generator charges enough gas into the side airbag (1) until the seam lines on the diffluence hole membrane (3) tear, then the gas enters into the additional airbag (2) which expands transversely.