Patent ID: 9688230
Date: 2017-06-27
CPC Classifications: B60N,B60R

Claim:
1. A vehicle seat incorporating a side airbag, comprising: a seat cushion; and a seat back provided at the rear edge of the seat cushion, including a seat back frame which has left and right side frames extending forward, wherein a pad covers the seat back frames, constituting a seat back unit; wherein the seat back unit is entirely covered with a trim cover having sewn parts made by sewing a plurality of trim cover strips; the airbag has an inflator, is secured to the side frame on a vehicle wall side and is incorporated in a side space made in one side of the seat back; if an impact is detected at that side of the seat back, the inflator is activated, generating high-pressure gas, the gas gushes in the airbag, inflating the airbag, and the airbag so inflated tears up the sewn part of the seat back, which are positioned at the front part of the vehicle wall side of the seat back, and develops to the side and front of the occupant, isolating the occupant from the vehicle wall and protecting the occupant; and the airbag is secured to the inner side of the side frame on the vehicle wall side, an expansion restriction plate, which is not integral with the side frame, is provided on the inner side of the airbag and is arranged to the inner side of the side frame, the airbag is sandwiched between the side frame on the vehicle wall side and the expansion restriction plate, the expansion restriction plate, the airbag and the side frame, in order, are arranged from the inner side of the seat back, and the pad has a guide groove extending to the sewn part of the trim cover on the vehicle wall side; an expansion restriction cloth strip covers the airbag entirely, is held and extending in the guide groove, and is incorporated in the sewn part of the trim cover at the exit of the guide groove; and the expansion restriction cloth strip controls the port through which the airbag develops.