Vehicle curtain airbag device

Patent metadata

Field	Value
Publication number	US-8967660-B2
Application number	US-201313961039-A
Country	US
Kind code	B2
Filing date	Aug 7, 2013
Priority date	Aug 10, 2012
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

A vehicle curtain airbag device is provided including: a curtain airbag including a main chamber that inflates and deploys to a vehicle width direction inside of a driving-seat-side side window due to being supplied with gas from an inflator installed to a vehicle, a delay chamber that is provided at a vehicle front-rear direction front side of the main chamber, and that completes inflation and deployment later than the main chamber upon receipt of the gas supply, and a sub chamber that is disposed on the vehicle width direction inside of the main chamber and that inflates and deploys so as to block off a gap formed between the main chamber and a driver's seat airbag that is inflated and deployed from a steering wheel; and a controller that inflates and deploys the driver's seat airbag and actuates the inflator in the event of a small overlap collision.

First claim

What is claimed is:

1. A vehicle curtain airbag device comprising:
a curtain airbag including
a main chamber that inflates and deploys to a vehicle width direction inside of a driver's seat-side side window due to being supplied with gas from an inflator installed to a vehicle,
a delay chamber that is provided at a vehicle front-rear direction front side of the main chamber, and that completes inflation and deployment later than the main chamber upon receipt of the gas supply, and
a sub chamber that, due to being inflated and deployed in the vehicle width direction inside of the main chamber, blocks off, from a vehicle front side, a gap formed between the main chamber and a driver's seat airbag that is inflated and deployed from a steering wheel; and

a controller that inflates and deploys the driver's seat airbag and actuates the inflator in the event of a small overlap collision.

2. The vehicle curtain airbag device of claim 1 , wherein the sub chamber is disposed so as to straddle the main chamber and the delay chamber, and the sub chamber is configured so as to inflate and deploy to take a reaction force from the delay chamber.

3. The vehicle curtain airbag device of claim 2 , wherein the sub chamber and the main chamber are in communication with each other through a first flow path.

4. The vehicle curtain airbag device of claim 1 , wherein the sub chamber and the main chamber are in communication with each other through a first flow path.

5. The vehicle curtain airbag device of claim 4 , wherein the sub chamber and the delay chamber are in communication with each other through a second flow path.

6. The vehicle curtain airbag device of claim 5 , wherein a flow path cross-section dimension of the second flow path is set larger than a flow path cross-section dimension of the first flow path.

7. The vehicle curtain airbag device of claim 1 , wherein the sub chamber is integrally pocket woven with the main chamber and the delay chamber using a one-piece woven method.

8. The vehicle curtain airbag device of claim 1 , wherein:
when the curtain airbag is opened out flat as a single body, the sub chamber is formed at an opposite side of a lower edge of the main chamber and the delay chamber from the main chamber and the delay chamber; and
the sub chamber is folded over at a lower edge side of the main chamber, the delay chamber or both the main chamber and the delay chamber, with an upper edge side of the sub chamber fixed to the vehicle body side together with an upper edge side of the main chamber and the delay chamber, such that the sub chamber is disposed at the vehicle width direction inside of the main chamber and the delay chamber when the curtain airbag has been inflated and deployed.

Assignees

• Taguchi Hiroyuki
• Fukawatase Osamu
• Toyota Motor Co Ltd

Inventors

• Taguchi Hiroyuki
• Fukawatase Osamu

Classifications

• B60R2021/23107

  the bag being integrated in a multi-bag system · CPC title

• B60R21/232

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

• B60R2021/23308

  the individual compartments defining the external shape of the bag · CPC title

• B60R21/23138

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

• B60R21/233 Primary

  comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other (B60R21/232 takes precedence) · CPC title