| 摘要 |
An air bag with reinforcing belts having high burst strength and superior safety comprising a circular top cloth (1), a circular bottom cloth (2) sewn to said circular top cloth and having an inflator mounting circular hole at its central portion, top and bottom reinforcing cloth pieces (5), (6) sewn to the central portions of said top and bottom cloth, respectively, and a plurality of reinforcing belts (7) disposed on the internal sides of said top and bottom cloths, wherein one ends of said reinforcing belts are connected to a top belt catcher (17) sewn to said top reinforcing cloth piece or said top cloth, wherein the other ends of said renforced belts is connected to a bottom belt catcher (18) sewn to said bottom reinforcing cloth piece or said bottom cloth, and wherein said top cloth and said bottom cloth are sewn, respectively, to their corresponding reinforcing cloth and, if required, to their corresponding belt catcher along a concentric closing sewing line and satisfies the following relation (I): 0.45 </= PHI /L </= 2.95 [where PHI is the shortest straight distance between two intersection points at which a line passing through the center of said circular top or bottom cloth intersects the outermost circumference of said sewing line, and L is a straight distance from an intersection point between the longitudinal central axis of said reinforcing belt and the outermost circumferential sewing line of said top reinforcing cloth piece to an intersection point between the longitudinal central axis of said reinforced belt and the outermost circumferential sewing line of said bottom reinforcing cloth piece.] <IMAGE> <IMAGE> |
