Patent ID: 9676365
Date: 2017-06-13
CPC Classifications: B60R

Claim:
1. A side airbag device comprising: a cushion formed in a bag form formed from a first base fabric so as to be inflated and deployed toward a lateral side of an occupant in a vehicle seat; an inflator provided on a vehicle rear side inside the cushion so as to supply an inflation gas; an inner tube formed of a second base fabric and provided inside the cushion so as to surround the inflator and receive the inflation gas first, the inner tube is provided in a state in which a portion of the second base fabric disposed inside the cushion overlaps an outer circumferential portion of the cushion, and the portion of the second base fabric and the outer circumferential portion of the cushion are sewn together; an upper opening formed in an upper portion of the inner tube so that the inflation gas can pass therethrough; a lower opening formed in a lower portion of the inner tube so that the inflation gas can pass therethrough; a partition wall formed of a third base fabric so as to extend toward a vehicle front side from a region between the upper opening and the lower opening of the inner tube and partitions the vehicle front side of the inside of the cushion into a chest restraining portion on an upper side and a waist restraining portion on a lower side; a void portion provided inside the cushion at a position further toward the vehicle front side of the partition wall so that the inflation gas can pass between the chest restraining portion and the waist restraining portion; and a vent hole formed in the first base fabric of the cushion near the void portion so that the inflation gas can be discharged to the outside of the cushion, wherein the upper opening has a smaller opening area than the lower opening, and the partition wall is inclined downward toward the vehicle front side from the vehicle rear side with respect to a line perpendicular to the front edge of the inner tube.