乗員保護装置用エアバッグの折り畳み方法

Air bag folding method for occupant protection device

Abstract

PROBLEM TO BE SOLVED: To provide a simple method capable of obtaining a similar effort even if no expansion regulating member such as complex strings and the like is used, and even if no development regulating member such as an inner bag is used. SOLUTION: This invention is concerned with a folding method for a circular shaped air bag 1 for an occupant protection device, which comprises the peripheral parts of overlapped fabrics sewn together where a surface side backing fabric 2 is overlapped on a back side backing fabric 3 having a gas generator mounting port 3a. In this case, the air bag 1 is wound up in a spiral shape while being started from two opposite places of its peripheral part toward to its center part up to the side part of a gas generator 5 so as to allow an intermediate wound-up body 18 to be formed up, which is composed of two wound-up bodies 16 and 17 lined up in parallel while the gas generator 5 is held in between. By letting both the side portions 18a and 18b in its longer direction of the intermediate wound-up body 18, be squeezed and drawn up toward a center line 19 in the longer direction, paired narrow width parts 20a and 20b narrowed in width, are formed around the gas generator 5 in the longer direction at both the sides of it, and the folding method thereby comprises the paired narrow width parts 20a and 20b wound up around the gas generator 5 in a spiral shape in the identical direction.
(57)【要約】 【課題】 煩雑な紐等の膨張規制部材や内袋等の展開規 制部材を用いなくても、同様の効果が得られる簡便な方 策を提供するものである。 【解決手段】 表側基布2と、ガス発生器取付口3aを 有する裏側基布3とを重ね合わせて、その周縁部が縫着 4されてなる乗員保護装置用円形状エアバッグ1の折り 畳み方法であって、エアバッグ1の周縁部の対向する2 ケ所より、その中心部に向かってガス発生器5の側部に まで渦巻き状に巻き上げて、ガス発生器5を挟んで平行 に並んだ2本の巻上体16,17からなる中間巻上体1 8を形成し、中間巻上体18の長手方向のガス発生器の 両側部分18a,18bを、該長手方向の中心線19に 向かって絞り寄せる事により、長手方向にガス発生器5 を中心にして、その両側部に、一対の幅の狭められた狭 幅部20a,20bを形成し、一対の狭幅部20a,2 0bを、ガス発生器5を中心にして、その周囲に、同一 方向に渦巻き状に巻き付ける様にしてなるものである。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    DE-10144776-A1April 10, 2003Autoliv DevFolding method for airbag for motor vehicles with flat airbag folded inwards in several stages to form to parcels, for quick and complete inflation
    DE-10144776-C2November 20, 2003Autoliv DevGassack-Faltverfahren