| 摘要 |
PURPOSE:To provide a cover for accommodating an air bag which possesses the superior rupture stability and molding stability. CONSTITUTION:A tear line 2 is formed by arranging recessed holes 4. The top edge parts 4a and 4b which are pin-pointed toward the adjacent recessed holes 4 are deflected from the center line of the recessed hole 4. Rupture propagates along the arrangements of the top edge parts 4a and 4b of the recessed holes 4 surely and stably. The rupture starting position can be set at a proper position by adjusting the arrangement of the recessed holes 4. Since the top edge parts 4a and 4b deflect from the center line of the tear line 2, the flow of resin is improved in injection molding, and molding stability is improved. Further, the exposure of the welding line on a rupture line is prevented. |
