AIRBAG DEVICE
First Claim
1. An airbag device comprising:
- a first airbag that, by receiving a gas supply and inflating and expanding from a folded-up state, restrains an upper body of a vehicle passenger from a front side in a vehicle longitudinal direction;
a second airbag that has a smaller volume than the first airbag and that, by receiving a gas supply and inflating and expanding from a folded-up state, restrains knees of the passenger from the front side in the vehicle longitudinal direction;
a gas flow path member that is flexible, that is folded-up together with the first airbag and the second airbag, and that, by a gas supply from an inflator, is inflated and expanded at interiors of the first airbag and the second airbag and directly leads gas from the inflator to the first airbag and the second airbag respectively;
a gas discharge suppressing structure that suppresses discharging, from the second airbag, of gas supplied to the second airbag; and
a cloth-like material that demarcates an internal space of the first airbag and an internal space of the second airbag, and limits an expanded thickness of the second airbag in the vehicle longitudinal direction,the gas flow path member passing through the cloth-like material and the gas flow path member being opened at the second airbag interior.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention obtains an airbag device that can effectively protect an upper body and knees of a passenger by a simple airbag structure. An airbag that structures an airbag device for a passenger'"'"'s seat has a main bag that restrains an upper body of a vehicle passenger from a front side in a vehicle longitudinal direction, a sub-bag that has a smaller volume than the main bag and that restrains knees of the passenger from the front side in the vehicle longitudinal direction, and an inner tube that is folded-up together with the main bag and the sub-bag and is inflated and expanded within the airbag by a gas supply from an inflator. The inner tube directly supplies gas of the inflator to the main bag and the sub-bag respectively. A check valve is provided at a gas exit that communicates the inner tube with the sub-bag.
-
Citations
13 Claims
-
1. An airbag device comprising:
-
a first airbag that, by receiving a gas supply and inflating and expanding from a folded-up state, restrains an upper body of a vehicle passenger from a front side in a vehicle longitudinal direction; a second airbag that has a smaller volume than the first airbag and that, by receiving a gas supply and inflating and expanding from a folded-up state, restrains knees of the passenger from the front side in the vehicle longitudinal direction; a gas flow path member that is flexible, that is folded-up together with the first airbag and the second airbag, and that, by a gas supply from an inflator, is inflated and expanded at interiors of the first airbag and the second airbag and directly leads gas from the inflator to the first airbag and the second airbag respectively; a gas discharge suppressing structure that suppresses discharging, from the second airbag, of gas supplied to the second airbag; and a cloth-like material that demarcates an internal space of the first airbag and an internal space of the second airbag, and limits an expanded thickness of the second airbag in the vehicle longitudinal direction, the gas flow path member passing through the cloth-like material and the gas flow path member being opened at the second airbag interior. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification