Two-cavity driver airbag

The utility model provides a two-cavity safety air bag for a driver. The two-cavity safety air bag comprises a central inner cavity, an edge outer cavity and an air generator, the edge outer cavity isof an annular structure; wherein the edge outer cavity is sleeved on the outer wall of the central inner cavity, the common surface of the central inner cavity and the edge outer cavity is cylindrical, the central inner cavity and the edge outer cavity are coaxial, the central inner cavity is connected with the edge outer cavity, the central inner cavity is communicated with the edge outer cavity, the edge outer cavity is provided with one or more outer cavity air leakage holes, and the gas generator is arranged in the central inner cavity. The utility model relates to a two-cavity safety airbag for a driver. The technical problem that due to the fact that an air bag of a traditional safety air bag is thick in the middle and thin in the edge, in the collision process, the head of a passenger usually makes contact