Airbag assembly

Patent metadata

Field	Value
Publication number	US-10640070-B2
Application number	US-201715836094-A
Country	US
Kind code	B2
Filing date	Dec 8, 2017
Priority date	May 31, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

An airbag assembly, which is capable of facilitating a deployment of a deployment part when a passenger seat airbag is deployed, and preventing a damage of a hinge part includes: a deployment part turned and opened when an airbag disposed inside a crash pad is deployed; a hinge part fixing the deployment part to the crash pad; and a plurality of hinge protection structures formed at one end of the hinge part in order to set a deployment direction of the airbag. Each of the plurality of hinge protection structures may include a load pass hole formed at the opposite surface of a surface facing the airbag, and distributes stress applied to the hinge part when the airbag is deployed.

First claim

What is claimed is:

1. An airbag assembly, comprising:
a deployment part turned and opened when an airbag disposed inside a crash pad is deployed;
a hinge part fixing the deployment part to the crash pad; and
a plurality of hinge protection structures formed at one end of the hinge part in order to set a deployment direction of the airbag,
wherein each of the plurality of hinge protection structures comprises a surface facing the airbag and a load pass hole formed at an opposite surface of the surface facing the airbag, and distributes stress applied to the hinge part when the airbag is deployed,
wherein the hinge part comprises a double hinge protection structure, and is constructed in such a manner that the deployment part is turned with respect to a first hinge at a low temperature condition and turned with respect to a second hinge at a high temperature condition.

2. The airbag assembly of claim 1 , further comprising a rupture induction structure positioned between one end of the hinge part and each of the plurality of hinge protection structures.

3. The airbag assembly of claim 2 , wherein the rupture induction structure comprises:
a rupture induction hole positioned between the one end of the hinge part and each of the plurality of hinge protection structures; and
a support part positioned along the rupture induction hole so as to connect the hinge part and each of the plurality of hinge protection structures.

4. The airbag assembly of claim 3 , wherein the support part is ruptured at the low temperature condition, and provides a rotation degree of freedom to the hinge part when the airbag is deployed.

5. The airbag assembly of claim 3 , wherein the support part comprises a cross-section reduction part positioned between the hinge part and each of the plurality of hinge protection structures, and
the cross-section reduction part is ruptured when the airbag is deployed at the low temperature condition.

6. The airbag assembly of claim 3 , wherein the support part has a preset elongation at the high temperature condition, and provides a supporting force to the hinge part to turn and open the deployment part, when the airbag is deployed.

7. The airbag assembly of claim 6 , wherein when the hinge part is turned and opened, the load pass hole absorbs energy generated by the turning and opening of the deployment part.

8. The airbag assembly of claim 1 , wherein the first hinge is close to the deployment part, and the second hinge is far from the deployment part.

9. The airbag assembly of claim 8 , wherein when the airbag is deployed at the low temperature condition, the deployment part is turned with respect to the first hinge at a preset angle, and additionally turned with respect to the second hinge at an angle more than the preset angle.

10. The airbag assembly of claim 8 , wherein when the airbag is deployed at the high temperature condition, the deployment part is turned with respect to the second hinge at a preset angle, and additionally turned with respect to the first hinge at an angle more than the preset angle.

11. The airbag assembly of claim 1 , wherein the load pass hole is formed to correspond to each of the plurality of hinge protection structures.

12. The airbag assembly of claim 11 , wherein the load pass hole is surrounded by ribs extended from each of the plurality of hinge protection structures.

13. The airbag assembly of claim 1 , further comprising a steel bracket positioned inside the hinge part.

14. The airbag assembly of claim 1 , wherein the plurality of hinge protection structures are positioned on a bottom surface of the hinge part and spaced with a same distance therebetween in a longitudinal direction of the hinge part.

15. The airbag assembly of claim 1 , wherein the deployment part has a two-door open structure.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Hyundai Mobis Co Ltd

Inventors

• An Jae Hyun
• Han Seung Sik
• Jung Ik Jin
• Lee Young Pyo

Classifications

• B60R2021/21537

  characterised by hinges · CPC title

• B60R21/215 Primary

  characterised by the covers for the inflatable member {(B60R21/2176 takes precedence)} · CPC title

• B60R21/217

  Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together · CPC title

• B60R21/207 Primary

  in vehicle seats · CPC title

• B60R2021/21506

  comprising tearing tabs, legs or the like for holding the lid before deployment · CPC title