Vehicle seat incorporating side airbag

Patent metadata

Field	Value
Publication number	US-2016159305-A1
Application number	US-201414905882-A
Country	US
Kind code	A1
Filing date	Apr 7, 2014
Priority date	Jul 22, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

A vehicle seat incorporating a side airbag includes a seat cushion and a 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 is provided on the inner side of the airbag, and the airbag is sandwiched between the side frame on the vehicle wall side and the expansion restriction plate.

First 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 the 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 is provided on the inner side of the airbag, and the airbag is sandwiched between the side frame on the vehicle wall side and the expansion restriction plate.

2 . The vehicle seat incorporating a side airbag, according to claim 1 , wherein a bracket is secured to the inner side of the side frame on the vehicle wall side; the airbag is held among the bracket and incorporated inside the vehicle wall side of the side frame of the seat back; and the expansion restriction plate is secured to the bracket and provided on the inner side of the airbag.

3 . The vehicle seat incorporating a side airbag, according to claim 2 , wherein the bracket includes a holding bracket having a U-shaped transverse section; the airbag is held among the holding bracket; and the expansion restriction plate is secured to the holding bracket and provided on the inner side of the airbag.

4 . The vehicle seat incorporating a side airbag, according to claim 2 , wherein the bracket has a U-shaped transverse section and holds the airbag; and the expansion restriction plate is secured to the bracket and provided on the inner side of the airbag.

5 . The vehicle seat incorporating a side airbag, according to claim 1 , wherein 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.

6 . The vehicle seat incorporating a side airbag, according to claim 5 , wherein the expansion restriction cloth strip includes a main part and a conduit part which are formed integral; the main part is bag shaped and covers the airbag entirely; and the conduit part has two ends, one end passing in the front of the main part, and the other end housed and extending in the guide groove of the pad and incorporated in the sewn part of the trim cover.

Assignees

• Tachi S Co

Inventors

• Makita Naoyuki

Classifications

• B60N2002/5808

  comprising opening zones for airbags · CPC title

• B60R21/2165

  characterised by a tear line for defining a deployment opening · CPC title

• B60R21/207 Primary

  in vehicle seats · CPC title

• B60N2/5883

  by sewing, stitching or threading · CPC title

• B60R21/23

  Inflatable members (B60R21/18 takes precedence; connection to inflation fluid source retainers B60R21/217) · CPC title