Abstract: An airbag device for protecting a vehicle occupant. The airbag device includes an airbag module including an airbag. The airbag module is configured to be disposed on a steering wheel body of a steering wheel of the vehicle. The ratio of a weight of the airbag device to a weight of the steering wheel body is no less than approximately 1:6 and no greater than approximately 1:2.

Abstract: An airbag device in which the optimum conditions of the airbag are set so the airbag device can fully protect an occupant while being able to be mounted in a vehicle more efficiently. The airbag device includes an airbag which is normally stored and configured to be inflated and deployed toward an occupant in the event of a vehicle emergency. The ratio of the volume of the airbag when packaged to the volume of the airbag when inflated is at least approximately 1:30.

Abstract: An airbag device for protecting a vehicle occupant. The airbag device includes an airbag module including an airbag. The airbag module is configured to be disposed on a steering wheel body of a steering wheel of the vehicle. The ratio of a weight of the airbag device to a weight of the steering wheel body is no less than approximately 1:6 and no greater than approximately 1:2.

Abstract: An airbag device for protecting an occupant of a vehicle. The airbag device includes a passenger airbag configured to deploy in a direction toward a vehicle occupant in an event of a vehicle emergency. When fully deployed, the passenger airbag includes a projected area facing a vehicle occupant. The projected area of the passenger airbag is 1.0 to 1.4 times a projected area of a 50th percentile adult male dummy.

Abstract: An airbag device with an improved airbag configuration to protect a vehicle occupant more efficiently. The airbag device is stored in the upper portion of an instrument panel of a vehicle under normal situations. The airbag device has an airbag that is deployable into a space in front of a vehicle occupant in the event of a vehicle emergency, such as a collision. The airbag viewed from the top when fully deployed and inflated has a right side portion, a left side portion, and a recess between the right and left side portions. When pressure is applied to the right and left side portions, the recess maintains a recessed shape.