1. Field of the Invention
The present invention relates to a driver seat airbag system.
2. Description of Related Art
A driver seat airbag system in which a position of a connected section of a tether to a base cloth on an opposite side of an occupant is aligned with an arrangement position of a rim of a steering wheel (see Japanese Patent Application Publication No, 2008-94224 (JP 2008-94224 A)) has been disclosed. The position of the connected section of the tether to a base cloth on an occupant side is set as a position substantially opposed to the arrangement position of the rim or is set on the outside of the position in a radial direction. In addition, a portion of the base cloth on the opposite side of the occupant that overlaps with the rim is provided with an additional sewn section over a circumferential direction or at least in a lower part in the circumferential direction. A sewing thread with a lower stretch rate than a sewing thread used for the base cloth on the occupant side is used for the additional sewn section.
During a frontal collision (a small overlap collision) or during an oblique collision on the outside of a front side member in a vehicle width direction with a passenger seat side of a vehicle being a collision side, an occupant in a driver seat positioned opposite from the collision side intends to move obliquely in a vehicle traveling direction (to a center side in the vehicle width direction), that is, to a collision direction.
Such a collision mode is not considered in the above example. Thus, it is considered that, when the occupant in the driver seat obliquely abuts against an airbag, the airbag turns about a pad section of the steering wheel as an attachment point thereof to the outside in the vehicle width direction and is then removed from the steering wheel.
USPTO Backgrounds
USPTO Backgrounds