Side airbag device

Abstract

A side airbag device stowed in a vehicle seat, comprising: an airbag that expands and deploys to protect an occupant seated in the vehicle seat; and an inflator that supplies expansion gas to the airbag. The airbag includes: a head protection chamber that mainly protects the head of the occupant; a side protection chamber located below the head protection chamber and protects the sides of the occupant's body; and a non-expanding part provided around the head protection chamber and the side protection chamber. The rear end part of the head protection chamber is located more forward than the rear end part of the side protection chamber. An upper securing apparatus is provided for securing an upper part of the non-expanding part to the vehicle seat. A slit is formed between the head protection chamber and the upper securing apparatus, extending downward from the upper end of the non-expanding part.

Dependencies are inferred from the claim text.