Patent ID: 9598043
Date: 2017-03-21
CPC Classifications: B60R

Claim:
1. A vehicular side airbag apparatus in the form of a side airbag that is built into a seatback and that is deployed and inflated from a vehicular rear direction toward a vehicular front direction through a gap between an occupant and a vehicular side portion when an inflator gas is fed into the side airbag, the vehicular side airbag apparatus comprising: the side airbag, which is formed by joining, along an outer peripheral seam line, outer peripheral edges of a vehicular interior panel and a vehicular exterior panel that face each other, the side airbag forming three chambers including a lumbar restraining chamber, a shoulder restraining chamber, and a chest restraining chamber inside the side airbag, and an inflator that injects the inflator gas is provided in a vehicular rear portion inside the side airbag, wherein a main portion of the side airbag is formed of at least one of the shoulder and lumbar restraining chambers, wherein the side airbag is attached to the seatback such that a vehicular rear portion of the main portion is inflated inside the seatback, wherein the three chambers are separated from one another by a first baffle and a second baffle, wherein the first baffle is shaped like a band having a width in a vehicular width direction and extends in a vehicular front-rear direction inside the side airbag, and is joined, at a longitudinally rear end of the first baffle, to a rear edge of the side airbag, wherein the first baffle is formed using one panel material and is joined at both side edges of the first baffle, to the vehicular interior panel and the vehicular exterior panel, respectively, and is simultaneously joined, at the longitudinally rear end of the first baffle, to the outer peripheral seam line, and wherein the second baffle is shaped like a band having a width in the vehicular width direction and extends in a vehicular up-down direction inside the side airbag, and has a baffle overlap area which is set at an intermediate position of the second baffle and to which a longitudinally front end of the first baffle is connected along with the vehicular interior panel and the vehicular exterior panel, and both ends of the second baffle are joined to an outer peripheral edge of the side airbag.