A vehicle seat

Patent metadata

Field	Value
Publication number	US-2021261079-A1
Application number	US-201916973209-A
Country	US
Kind code	A1
Filing date	Jun 13, 2019
Priority date	Jun 13, 2018
Publication date	Aug 26, 2021
Grant date	—

Abstract

There is proposed a vehicle seat configured to support an occupant (401) in a sitting position, the seat comprising: a squab (27), a backrest (28), and an airbag unit. The airbag unit comprises an inflatable bag (1) and an inflator (34). The airbag comprises an inflatable chamber (8, 9; 208). The airbag further comprises an inflatable guide (2), connected to the inflator and the inflatable chamber. Upon actuation of said inflator, said inflatable guide is at least partially inflated before the inflatable chamber, thereby initially urging the inflatable chamber away from the backrest of the seat. The airbag is configured such that after the inflatable guide is at least partially inflated, the inflatable chamber inflates into a deployed position in which it defines an inflated shroud which extends over said sitting position and provides lateral protection to said occupant of the seat in said sitting position.

First claim

1 . A vehicle seat configured to support an occupant in a sitting position, the seat comprising:
a squab ( 27 ), a backrest ( 28 ), and an airbag unit; the airbag unit comprising an inflatable bag ( 1 ) provided in an initially rolled and/or folded airbag package, and an inflator ( 34 ) actuable to direct inflating gas into the airbag to inflate the airbag into an inflated configuration; the airbag comprising an inflatable chamber ( 8 , 9 ; 208 ); wherein the airbag further comprises an inflatable guide, connected to the inflator and the inflatable chamber, the airbag being mounted and configured such that, upon actuation of said inflator inflate the airbag, said inflatable guide is at least partially inflated before the inflatable chamber ( 8 . 9 ; 208 ), thereby initially urging the inflatable chamber away from the backrest of the seat; the airbag being configured such that after the inflatable guide is at least partially inflated, the inflatable chamber inflates into a deployed position in which it defines an inflated shroud which extends over said sitting position and provides lateral protection to said occupant of the seat in said sitting position.

2 . The vehicle seat according to claim 1 , wherein the inflatable guide is formed in a lobe of the airbag.

3 . The vehicle seat of claim 1 , wherein an inflatable volume of the inflatable guide is smaller than an inflatable volume of the inflatable chamber.

4 . The vehicle seat of claim 1 , wherein the inflatable guide is positioned proximal to one or more inlet regions of the airbag.

5 . The vehicle seat of claim 1 , wherein the inflatable guide includes an inflatable volume which has a U or elongated O shape.

6 . The vehicle seat of claim 1 , wherein said inflatable guide comprises a first uninflatable region and a second uninflatable region, which are not fluidly connected to the inflator.

7 . The vehicle seat of claim 6 , wherein the first uninflatable region and the second uninflatable region are spaced apart.

8 . The vehicle seat according to claim 6 , wherein the first uninflatable region and the second uninflatable region are connected via an interconnecting seam.

9 . The vehicle seat according to claim 8 , wherein the interconnecting seam and a seam around the periphery of the inflatable bag define an inflatable volume of the inflatable guide.

10 . The vehicle seat according to claim 8 , wherein the interconnecting seam and two seams around the periphery of the inflatable bag define two inflatable volumes of the inflatable guide.

11 . The vehicle seat of claim 1 , wherein the airbag comprises two inflatable chambers physically connected to one another via a connecting interface and fluidly isolated from one another.

12 . The vehicle seat of claim 11 , wherein the airbag is one-piece woven, and said connecting interface is defined by a region of the airbag in which the yarns of two constituent fabric layers of the airbag are interwoven.

13 . The vehicle seat of claim 1 , wherein the inflatable guide of the airbag unit is provided in an upper portion of the backrest distal to the squab, and is configured, when inflated, to extend over the occupant.

14 . The vehicle seat of claim 1 , wherein the airbag unit is provided in a rearward portion of the backrest, and is configured, when inflated, to extend around the backrest and over the occupant.

15 . The vehicle seat of claim 1 , wherein the said airbag is substantially symmetrical about an axis bisecting the inflatable guide.

Assignees

• Autoliv Dev

Inventors

• Hagg Mikaela
• Leijer Malin
• Berntsson Mats
• Wikstedt Kevin
• Sandinge Par
• Kjell Fredrik
• Houessou Jules
• Svensson Carl-Johan
• Karlsson Hanna
• Henriksson Ola

Classifications

• B60R2021/0048

  Head · CPC title

• B60R2021/2074

  in head rests · CPC title

• B60R2021/23161

  specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other · CPC title

• B60R21/207 Primary

  in vehicle seats · CPC title

• B60R21/23138

  specially adapted for side protection (B60R21/23184, B60R21/232 take precedence) · CPC title