Driverseat airbag device

A driver seat airbag device, comprising:

• an airbag cushion installed at a center portion of a steering wheel of a vehicle and configured to expand and deploy toward an occupant in a driver seat;
• and an inflator configured to supply gas to the airbag cushion;
• wherein
• the driver seat airbag cushion includes:
• a steering side panel provided on the steering wheel side;
• and
• an occupant side panel joined to an occupant side of the steering-side panel;
• and a shape of the expanded and deployed airbag cushion is such that a portion of the airbag cushion having a maximum area in a cross section orthogonal to a rotation axis of the steering wheel is formed further toward the vehicle front side than the center between a frontmost portion of the steering side panel and a rearmost portion of the occupant side panel in a vehicle front-rear direction,
• wherein the steering side panel is circular or elliptical, having an area that can encompass the rim of the steering wheel when extended on a plane, and the occupant side panel is dome-shaped and joined to an edge of the steering side panel,
• wherein the occupant side panel is in a state in which one or a plurality of tapered cutouts are formed from an outer periphery toward a center when the occupant-side panel is spread on a plane, and
• wherein the passenger side panel is formed as a dome by closing the cutouts.