Side airbag device for vehicle
First Claim
1. A side airbag device for a vehicle comprising:
- an inflator that generates gas by activating;
an airbag that is provided at a side portion of a seatback of a vehicle seat, the airbag inflates and expands toward a vehicle front side of the side portion due to gas being supplied to an interior of the airbag by the inflator, the airbag being configured to retrain at least from a chest portion to a head portion of a vehicle occupant located in the vehicle seat; and
a partitioning portion that partitions the airbag into;
(i) a rear bag portion that restrains at least a rear portion of the chest portion of the vehicle occupant, and (ii) a front bag portion that restrains a front portion of the chest portion of the vehicle occupant, the partitioning portion including;
a laterally extending portion extending toward a front side of the seatback from a vertical direction intermediate portion of a rear end portion of the airbag that has inflated and expanded;
a vertically extending portion extending toward an upper side of the seatback from a longitudinal direction intermediate portion of a lower end portion of the airbag that has inflated and expanded, and,a plurality of communication ports formed at the partitioning portion to supply gas from the inflator that is accommodated within the rear bag portion into the front bag portion.
1 Assignment
0 Petitions
Accused Products
Abstract
To contribute to stabilizing the restraining of a head portion. When an air bag inflates and expands in a side airbag device for a vehicle, a rear bag portion accommodating an inflator inflates and expands earlier than and at a higher pressure than a front bag portion. The front bag portion, that is low pressure and inflates and expands later, can be supported by the rear bag portion that is high pressure, and the front bag portion does not shake greatly. Moreover, the flow of gas from the rear bag portion that is high pressure to the front bag portion that is low pressure can be regulated by the upper and lower communication ports formed in a tether. Due to the above, the expansion behavior of the front bag portion can be stabilized, which can therefore contribute to the restraining of the head portion by the front bag portion.
17 Citations
13 Claims
-
1. A side airbag device for a vehicle comprising:
-
an inflator that generates gas by activating; an airbag that is provided at a side portion of a seatback of a vehicle seat, the airbag inflates and expands toward a vehicle front side of the side portion due to gas being supplied to an interior of the airbag by the inflator, the airbag being configured to retrain at least from a chest portion to a head portion of a vehicle occupant located in the vehicle seat; and a partitioning portion that partitions the airbag into;
(i) a rear bag portion that restrains at least a rear portion of the chest portion of the vehicle occupant, and (ii) a front bag portion that restrains a front portion of the chest portion of the vehicle occupant, the partitioning portion including;a laterally extending portion extending toward a front side of the seatback from a vertical direction intermediate portion of a rear end portion of the airbag that has inflated and expanded; a vertically extending portion extending toward an upper side of the seatback from a longitudinal direction intermediate portion of a lower end portion of the airbag that has inflated and expanded, and, a plurality of communication ports formed at the partitioning portion to supply gas from the inflator that is accommodated within the rear bag portion into the front bag portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification