Patent ID: 7445239
Filing Date: 2008-11-04
Classification: B60R

Abstract:
1. An airbag, folded and mounted in a steering wheel, wherein: the airbag is folded along a plurality of vertical folding lines and horizontal folding lines that extend in a vertical direction and a horizontal direction, respectively, of the steering wheel in an inflated state, and wherein the airbag is substantially circular in an unfolded state, and a final folded shape of the airbag is obtained by folding the circular airbag a plurality of times along the vertical folding lines into a band-shaped folded body that extends vertically, and then folding an upper portion and a lower portion of the band-shaped folded body along the horizontal folding lines, and wherein the band-shaped folded body is obtained by: folding a first half portion of the unfolded airbag in the horizontal direction onto a second half portion -along a first vertical folding line positioned in the first half portion so as to obtain a primary folded body; folding the first half portion and the second half portion in the primary folded body along a second vertical folding line positioned in the second half portion so as to obtain a secondary folded body; folding the second half portion in the secondary folded body along a third vertical folding line that substantially coincides with the first vertical folding line to obtain a tertiary folded body; and folding the second half portion in the tertiary folded body along a fourth vertical folding line that substantially coincides with the second vertical folding line and folding the first half portion in the tertiary folded body along a fifth vertical folding line that substantially coincides with the first vertical folding line.