Patent ID: 7207595
Filing Date: 2007-04-24
Classification: B60R

Abstract:
1. A side airbag apparatus used in a vehicle, comprising: an airbag; an inflator, wherein the inflator supplies gas to the airbag, thereby inflating and deploying the airbag between a body side portion of the vehicle and a seat located in the passenger compartment of the vehicle; and a limited thickness portion, wherein, when The airbag is inflated and deployed, the limited thickness portion limits the inflation of the airbag such that the thickness of a portion of the airbag is less than the thickness of the remainder of the airbag with respect to the measurement between the occupant and the body side portion, and wherein the airbag includes an inflation portion that entirely surrounds the limited thickness portion and is inflated with gas from the inflator, wherein the airbag is provided in a part of a backrest of the seat that faces the side body portion, wherein the airbag is deployed frontward in a traveling direction of the vehicle and is inflated in a space between the body side portion and an occupant for protecting at least the lumbar region and the chest of the occupant. wherein the inflation portion includes a narrow portion, wherein, when the airbag is deployed, the narrow portion is located below the limited thickness portion and frontward in the traveling direction of the vehicle with respect to the limited thickness portion, and wherein the narrow portion is arcuate as viewed from a side of the vehicle and has a substantially constant width.