Occupant protection device

An occupant protection device comprising:

• an airbag
• an airbag opening provided in an instrument panel through which the airbag is configured to pass when the airbag is inflated and deployed in a direction of an occupant of a vehicle;
• an airbag door configured to close the airbag opening and be torn open when the airbag is inflated and deployed;
• and
• an airbag module housed in the airbag door at a portion closer to a front side of a vehicle body of the vehicle, the airbag module comprising the airbag,
• wherein the airbag opening comprises a first side, a second side, and a third side, the first side and the second side extending in an upward direction and facing each other, the third side extending in a horizontal direction,
• wherein the first side and the third side are continuous at a first corner, and the second side and the third side are continuous at a second corner,
• wherein a first rib portion, a second rib portion, and a third rib portion are provided at an edge of each of sides of the instrument panel, and the first rib portion, the second rib portion, and the third rib portion extend along each of the sides,
• wherein the first rib portion and the third rib portion of the instrument panel are discontinuous without intersecting each other on the first corner side,
• wherein the second rib portion and the third rib portion are discontinuous without intersecting with each other on the second corner side,
• wherein the first rib portion, the second rib portion, and the third rib portion are provided at the edge of each of the sides of the instrument panel on a back surface of the instrument panel, and
• wherein a cover sheet is attached to a position on a surface passing through the third side of the airbag that comes into contact with an upper flap of the airbag door when the airbag tears open the airbag door.