Patent attributes
An airbag and an airbag apparatus in which a vent hole is in a closed state or a slightly open state until an occupant plunges into the airbag and the vent hole becomes to an open state or a widely open state when the occupant plunges into the airbag. The inside of the airbag 10 is partitioned by inner panels 22A, 22B into a first chamber 1 centrally located and a second chamber surrounding the first chamber 1. A vent hole 18 is formed in a rear panel 14 to allow the communication between the second chamber 2 and the outside of the airbag. A lid member 60 is provided to cover the vent hole 18 from the inside of the rear panel 14. A tether (tethering member) 70 connects the lid member 60 and the inner panels 22A, 22B. When the airbag 10 is inflated, the tether 70 is tensioned to prevent the lid member 60 from moving out of the airbag 10.
