Airbag cushion with seam deviation and an airbag system including the same

摘要

The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same.;The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger.

主权项

1. An airbag cushion, including:
at least one fabric; and seam parts connecting the fabric, wherein: the seam parts comprises a first seam part and a second seam part; the first seam part of the seam parts is sewed in a forward direction such that an upper thread is sewed without a twine against a lower thread; the second seam part of the seam parts is sewed in a reverse direction such that the upper thread is sewed with a twine against the lower thread; and a deviation of upper seam thread length per a unit length of the fabric between the first seam part and the second seam part is 15% or less, and the deviation (ΔL) is represented by the following Calculation Formula 1:
ΔL(%)=|(L2−L1)|/L1×100 wherein L1 is a necessary length of the sewing thread per a unit length of the airbag cushion fabric in the first seam part sewed in the forward direction, and L2 is a necessary length of the sewing thread per a unit length of the airbag cushion fabric in the second seam part sewed in the reverse direction.