Safety air bag
The invention discloses a safety air bag which comprises an air pocket and two gas generators. The air pocket is divided into a first air chamber and a second air chamber through a separating wall. The two gas generators are respectively used for correspondingly aerating the first air chamber and the second air chamber. The air pocket of the safety air bag is divided into two air chambers, the two gas generators are arranged and respectively used for aerating the two air chambers, and consequently aeration efficiency of the air pocket can be improved and required time that the air pocket is completely unfolded is shortened. Moreover, different ignition timing and aeration pressure can be adopted for the two gas generators. The aeration direction of air can be guided through the air pocket. The aeration direction is changed from a direction facing a passenger to a transverse direction. The aeration time can be shortened, and simultaneously stiffness characteristics of different portions of the air bag can be more flexibly controlled and the head, the neck and the chest of the passenger can be effectively protected from being injured. 1. An airbag, characterized in that comprises an air bag (10) and two gas generator (20), the airbags (10) through a wall (12) is divided into a 1st air chamber (11) and the 2nd chamber (13), the two gas generator (20) are respectively used for corresponding to a 1st air chamber (11) and the 2nd chamber (13) air-filled. 2. Airbag according to Claim 1, characterized in that the partition walls (12) presents S shape. 3. Airbag according to Claim 2, characterized in that the airbags (10) is of the round, the partition walls (12) of the two-end connection the diameter of the round bag. 4. Airbag according to Claim 1, characterized in that the airbags (10) is of the round, the 1st chamber (11) and the 2nd chamber (13) takes the form of center-symmetrical structure. 5. Airbag according to Claim 1, characterized in that each one of the 1st chamber (11) and the 2nd chamber (13) including the tail of the air chamber (14) of the head and the air chamber (15), the tail part of the gas chamber (14) than the gas chamber the size of the head (15) of the small size. 6. Airbag according to Claim 5, characterized in that the tail part of the gas chamber (14) is connected with the gas generator (20) of the air inlet (22). 7. Airbag according to Claim 5, characterized in that the head of the air chamber (15) is provided with a vent hole (152). 8. To 7 to any one of said airbag according to Claim 1, characterized in that the stated 1st air chamber (11) corresponding to the position of impact of an occupant's head, the 2nd chamber (13) corresponding to the crew member's chest impact position, the 1st chamber (11) and the 2nd chamber (13) of different rigidity after inflation. 9. To 7 to any one of said airbag according to Claim 1, characterized in that the two gas generator (20) of different types. 10. To 7 to any one of said airbag according to Claim 1, characterized in that the two gas generator (20) different the ignition time.