Airbag device

• US 20100237596A1
• Filed: 09/12/2007
• Published: 09/23/2010
• Est. Priority Date: 09/21/2006
• Status: Active Grant

• Current Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Sugimoto, Shinichi, Sone, Takeshi
• Granted Patent: US 7,918,482 B2
• Time in Patent Office: Days
• US Class Current: 280/743.100
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 2021/23316 Inner seams, e.g. creating separate compartments or used as tethering means
• CPC Class Codes: B60R 2021/2612 Gas guiding means, e.g. ducts
• CPC Class Codes: B60R 21/207 in vehicle seats
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10

Abstract

[Object] To provide a technique that is effective for allowing a pressurized fluid to pass through smoothly between a plurality of bag-like bodies when inflated and extend, and for improving their extendibility.

[Solving Means] An airbag device includes a first bag 35 composed of a bag body formed by joining base fabrics 35A, 35B, and provided with a supply flow passage for supplying a pressurized fluid supplied from an inflator into the inside and a flow-out passage for allowing the pressurized fluid supplied into the inside to flow out to the outside, a second bag 36 composed of a bag body formed by joining base fabrics 36A, 36B, and provided with a flow-in passage for allowing the pressurized fluid allowed to flow out from the flow-out passage of the first bag 35 to flow into the inside, and a connection panel PN for connecting the first bag 35 and the second bag 36 so that the whole of the first bag 35 and the second bag 36 is configured in a predetermined shape when inflated and extends.

Claims

1. An airbag device comprising:

a first bag composed of a bag body formed by joining base fabrics together, and provided with a supply flow passage for supplying pressurized fluid supplied from an inflator into its inside and a flow-out passage for allowing the pressurized fluid supplied into its inside to flow out to the outside;

a second bag composed of a bag body formed joining base fabrics together, and provided with a flow-in passage for allowing the pressurized fluid allowed to flow out from the flow-out passage of the first bag to flow into its inside; and

a connection member for connecting the first bag and the second bag so that the whole of the first bag and the second bag is configured in a predetermined shape when inflated and extends.

2. The airbag device according to claim 1,

wherein the connection member connects a connection portion for the first bag connected to the one side of the first bag, and a connection portion for the second bag connected to the other side of the second bag when inflated and extends.

3. The airbag device according to claim 2,

wherein the connection portion for the second bag of the connection member is provided with a plurality of pairs, which are located different positions in a vehicle width direction with each other, each of the pairs being positioned in left and right sides of the center line in the vehicle width direction.

4. The airbag device according to claim 3,

wherein the connection member is composed of a fabric body.

5. The airbag device according to claim 4,

wherein the connection member is composed of a non-inflatable fabric body.

6. The airbag device according to claim 1,

wherein the first bag includes a pushing extension portion being inflated and extending by the pressurized fluid supplied from the inflator, the pushing extension portion being provided with a extension deriving portion for deriving the second bag to the above of the head portion of the occupant, and the second bag includes an upper extension portion, which is inflated and extends toward the above of the head portion of the occupant.

7. The airbag device according to claim 6,

wherein the pushing extension portion of the first bag is inflated and extends on the side facing the back of an occupant'"'"'s head, and the second bag is provided with a lower extension portion, which is inflated and extends on the side opposite with respect to the occupant and is disposed to overlay the pushing extension portion.