| 摘要 |
PROBLEM TO BE SOLVED: To expand an air bag into the predetermined shape without riding over a decorating bead by forming a fin part having the predetermined width in the longitudinal direction of a bead core with notch grooves with the predetermined space in the longitudinal direction so as to provide a notch part and a non-notch part in the bead core side. SOLUTION: A decorating bead 25 is formed with a bead core 26 of the synthetic resin and a fin part 27 having the predetermined width (h) in the longitudinal direction of the bead core 26. This fin part 27 is formed with notch grooves 28 having the predetermined notch length h1 with the predetermined space (p) in the longitudinal direction of the fin part so as to have a notch part 29 and a non-notch part in the bead core 26 side thereof. Since the notch length h1 of the notch groove 28 is formed at the notch length h1 for relatively giving a degree of freedom of curve to the bead core 26 at the time of sewing, following property is secured without meandering of the bead core 26 so as to facilitate the sewing of seat cover. An air bag is expanded into the predetermined shape without riding over the decorating bead 26. |
