Safety airbag

The utility model belongs to the technical field of the passive safety device of car technique and specifically relates to a safety airbag. Compared with the prior art, the utility model, the safety airbag bag mainly concentrates on ascending direction in inflation initial stage, extension trend, has reduced the damaged risk of instrument board epidermis and foaming layer. Expanding middle period, owing to just released by quick windshield's the upper portion portion of having tucked in, the gas that corresponds the position in the safety airbag bag at the low splenium of the formation of the position facing to windshield, has reduced the damaged risk of windshield fast to the periphery diffusion. In the inflation later stage, because the existence of convolution portion, the safety airbag bag is restricted and is guided downwards to the facial movement tendency of passenger, has reduced air -bags and has patted the facial risk of passenger. In addition, left side portion of having tucked in and the right side portion of having tucked in not only are suitable for the safety airbag bag that folding two -dimensional designed, also can pave the safety airbag bag of three -dimensional design and fold, and adaptability is wider.