Curtain airbag for a vehicle and a restraining arrangement

Patent metadata

Field	Value
Publication number	US-9744936-B2
Application number	US-201415032729-A
Country	US
Kind code	B2
Filing date	Oct 27, 2014
Priority date	Oct 29, 2013
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A curtain airbag for a vehicle has a main chamber shaped in the position being mounted on the vehicle, in the inflated state covering an inner side structure of the vehicle. The curtain airbag has an additional chamber which, in the mounting position, is located at the in driving direction of the vehicle front portion of the main chamber, and deploys in the direction of the interior of the vehicle when the curtain airbag is inflated. The additional chamber is attached to the main chamber so as to be positioned in the inflated state between the front portion of the main chamber and an occupant to be restrained by the curtain airbag.

First claim

The invention claimed is:

1. A curtain airbag for a vehicle comprising:
a main chamber shaped to cover an inner side structure of the vehicle when mounted in the vehicle and inflated; at least one additional chamber located at a front portion of the main chamber in a driving direction of the vehicle and deployable toward an interior of the vehicle when the curtain airbag is inflated, the at least one additional chamber attached to the main chamber so as to be positioned in an inflated state between the front portion of the main chamber and an occupant to be restrained by the curtain airbag,
wherein the at least one additional chamber includes in a horizontal cross-section in projection towards a gap between the curtain airbag and an adjacent frontal airbag a greater width than a width of the gap.

2. The curtain airbag according to claim 1 , wherein the additional chamber is connected with the front portion of the main chamber by a first non-inflatable section and with a second portion of the main chamber which is arranged closer to the occupant by a second non-inflatable section.

3. The curtain airbag according to claim 2 , wherein a length of the second non-inflatable section and a length of the first non-inflatable section are dimensioned in relation to a distance between attachment points of each section such that the second non-inflatable section is tensioned and the first non-inflatable section is not tensioned or tensioned after the second non-inflatable section is tensioned during the inflation process.

4. The curtain airbag according to claim 2 , wherein the first non-inflatable section includes a length which enables a position of the inflated additional chamber between the occupant and a gap between the main chamber and an adjacent inflated frontal airbag.

5. The curtain airbag according to claim 2 , wherein the second non-inflatable section is designed as a strap connecting the additional chamber at an upper and/or lower rim with the main chamber.

6. The curtain airbag according to claim 2 , wherein the first non-inflatable section has a length in a horizontal cross-section of 100 to 400 mm.

7. The curtain airbag according to claim 2 , wherein the second non-inflatable section has a length in a horizontal cross section of 100 to 300 mm.

8. The curtain airbag according to claim 1 , wherein the main chamber has at least one cavity in the inflated state in which the additional chamber abuts when inflated.

9. A restraining arrangement with the curtain airbag according to claim 1 and a frontal airbag.

10. A curtain airbag for a vehicle comprising:
a main chamber shaped to cover an inner side structure of the vehicle when mounted in the vehicle and inflated; at least one additional chamber located at a front portion of the main chamber in a driving direction of the vehicle and deployable toward an interior of the vehicle when the curtain airbag is inflated, the at least one additional chamber attached to the main chamber so as to be positioned in an inflated state between the front portion of the main chamber and an occupant to be restrained by the curtain airbag,
wherein the at least one additional chamber includes in a horizontal cross-section in projection towards a gap between the curtain airbag and an adjacent frontal airbag a greater width than a width of the gap,
wherein the additional chamber is connected with the front portion of the main chamber by a first non-inflatable section and with a second portion of the main chamber which is arranged closer to the occupant by a second non-inflatable section.

11. A curtain airbag for a vehicle comprising:
a main chamber shaped to cover an inner side structure of the vehicle when mounted in the vehicle and inflated;
at least one additional chamber located at a front portion of the main chamber in a driving direction of the vehicle and deployable toward an interior of the vehicle when the curtain airbag is inflated, the at least one additional chamber attached to the main chamber so as to be positioned in an inflated state between the front portion of the main chamber and an occupant to be restrained by the curtain airbag, the front portion of the main chamber extending farther forward in the driving direction as compared to the at least one additional chamber.

12. The curtain airbag of claim 11 , in combination with a restraining arrangement including a frontal airbag, the frontal airbag extending laterally across the vehicle, the main chamber extending perpendicular to the frontal airbag, the additional chamber located at a corner defined by an intersection between the main chamber and the frontal airbag.

13. The curtain airbag of claim 11 , wherein the at least one additional section is attached to the main chamber via at least one non-inflatable section.

14. The curtain airbag of claim 11 , wherein the at least one additional section is attached to the main chamber via first and second non-inflatable sections.

Assignees

• Kruse Dion
• Autoliv Dev

Inventors

• Kruse Dion

Classifications

• B60R2021/0006

  Lateral collision · CPC title

• B60R2021/23107

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

• B60R21/233

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

• B60R2021/0032

  Position of passenger · CPC title

• B60R21/232 Primary

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