Vehicle curtain airbag device

Patent metadata

Field	Value
Publication number	US-9862349-B2
Application number	US-201615061079-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Apr 9, 2015
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A vehicle curtain airbag device has a curtain airbag. The curtain airbag is configured such that: a front end side is Z-folded toward a vehicle width direction inner side, the curtain airbag is further folded top-to-bottom, and, in the stowed state, a front end portion at the Z-folded region is covered by a rear end portion of a front pillar garnish; a corner portion at a front end side and an upper end side of the front side sub chamber is formed in a circular arc shape; and in a mid-deployment state, a front end side and an upper end side of the Z-folded region are covered, the corner portion overlaps a vehicle width direction outer side of the rear end portion, and a rear end of the corner portion is positioned further to a vehicle rear side than a rear end of the front pillar garnish.

First claim

What is claimed is:

1. A vehicle curtain airbag device comprising:
a curtain airbag including a front side sub chamber at a front side of a front side main chamber, the curtain airbag inflates and deploys along a vehicle cabin side section on being supplied with gas from an inflator,
wherein a front end side, at which the front side sub chamber is provided, is Z-folded toward a vehicle width direction inner side to form a Z-folded region, the curtain airbag is further folded bottom-to-top and stowed in an upper end portion of the vehicle cabin side section, and, in the stowed state, a front end portion at the Z-folded region is covered from the vehicle width direction inner side by a rear end portion of a front pillar garnish;
wherein a corner portion at a front end side and an upper end side of the front side sub chamber is formed in a circular arc shape that is convex toward a front side and an upper side of the front side sub chamber; and
wherein in a mid-deployment state of the curtain airbag in which the bottom-to-top folding is unfolded and the Z-fold is not unfolded, a front end side and an upper end side of the Z-folded region are covered from the vehicle width direction inner side by the rear end portion of the front pillar garnish, the corner portion overlaps a vehicle width direction outer side of the rear end portion of the front pillar garnish, and a rear end of the corner portion is positioned further to a vehicle rear side than a rear end of the front pillar garnish.

2. The vehicle curtain airbag device of claim 1 , wherein the front side sub chamber is formed such that, in an inflated and deployed state, an upper edge side of the front side sub chamber overlaps a front pillar, and a lower end side of the front side sub chamber projects out further to a lower side than the front side main chamber, so as to straddle above and below a door belt line of a front side door.

Assignees

• Toyota Motor Co Ltd

Inventors

• Fujiwara Yusuke
• Nakashima Atsushi

Classifications

• B60R21/232 Primary

  Curtain-type airbags deploying mainly in a vertical direction from their top edge · CPC title

• B60R21/237

  characterised by the way they are folded · CPC title