PROBLEM TO BE SOLVED: To provide a head protection airbag which can secure an occupant protection performance and which can save weight.SOLUTION: A head protection airbag 20 is folded and stored in an upper edge side in inside of a vehicle on a window of the vehicle, and by flowing inflation gas thereinto, the airbag is expanded and inflated so as to cover the window. The airbag is formed by double elastic webbing formed of warp and weft. The airbag 20 comprises a low fineness portion 57 in which one of the warp and weft is a yarn having low fineness, and a high fineness portion 58 in which a yarn having a fineness higher than that of the low fineness portion 57 is used. The airbag 20 comprises a high stress concentration part 39, in which stress is easily concentrated in an initial stage of inflation in which the airbag is inflated by flowing of the inflation gas, and a low stress concentration part 40, in which stress is hardly concentrated. The low stress concentration part 40 comprises the low fineness portion 57, and the high stress concentration part 39 comprises the high fineness portion 58.SELECTED DRAWING: Figure 4
【課題】乗員保護性能を確保しつつ、軽量化することが可能な頭部保護エアバッグを、提供すること。【解決手段】車両の窓の車内側における上縁側に折り畳まれて収納されて、膨張用ガスを流入させて前記窓を覆うように展開膨張する構成として、経糸と緯糸とからなる袋織りによって形成される頭部保護エアバッグ20。エアバッグ20が、経糸若しくは緯糸の一方に繊度の低い糸を使用した低繊度部位57と、低繊度部位57より繊度の高い糸を使用した高繊度部位58と、を備える。また、エアバッグ20は、内部に膨張用ガスを流入させて膨張する膨張初期に、応力集中の生じやすい高応力集中部39と、応力集中の生じ難い低応力集中部40と、を有する。低応力集中部40が、低繊度部位57を備える構成とされ、高応力集中部39が、高繊度部位58を備える構成とされている。【選択図】図4
HEAD PROTECTION AIRBAG
頭部保護エアバッグ
2017-05-18
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |