Patent attributes
A collision damage reduction device to be applied to a vehicle provided with a door and a side sill includes an airbag and a door beam. The airbag is deployed from a container disposed on a lower side of the door to a region on a vehicle-widthwise outside of the door. The airbag includes a first air chamber and a second air chamber. After being deployed, the first air chamber has an upper end disposed higher than the door beam and a lower end disposed lower than an upper end of the side sill, at least within a range in which its position in a vehicle front-rear direction overlaps with a seating surface of a seat. The second air chamber extends across a lower part of the first air chamber and the container, and has a lower internal pressure than the first air chamber after being deployed.