AIRBAG CUSHION

• US 20090152850A1
• Filed: 02/05/2008
• Published: 06/18/2009
• Est. Priority Date: 12/13/2007
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: KIM, Yeon Kyeong, LEE, Jung Su
• Granted Patent: US 7,722,079 B2
• Time in Patent Office: Days
• US Class Current: 280/733
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 21/2338 Tethers
• CPC Class Codes: B60R 21/239 characterised by their venting means

Abstract

The present invention relates to an airbag cushion for protecting a driver and passengers when a vehicle crashes, wherein the sliding bent is guided into a belt guider and slides between a deployment portion and the belt guider, when the deployment portion is deployed. The sliding belt slides between the deployment portion and the belt guider in such a manner that before the deployment portion is deployed, the sliding belt clogs the first vent holes, when the deployment portion is partially deployed, the second vent hole forms a flow channel together with the first vent holes so that the gas is discharged along the flow channel through the first vent holes, and when the deployment portion is fully deployed, the sliding belt clogs the first vent holes so that the gas is not discharged through the first vent holes.

Claims

1. An airbag cushion comprising:

a deployment portion deployed by an incoming gas and having a pressure control vent hole formed therein;

a belt guider attached to the deployment portion and having first vent holes formed therein so that the gas introduced to the deployment portion can be discharged to the outside through the pressure control vent hole when the deployment portion is deployed; and

a sliding belt in which a second vent hole corresponding to the first vent holes is formed, wherein the sliding bent is guided into the belt guider and slides between the deployment portion and the belt guider, when the deployment portion is deployed,

wherein the sliding belt slides between the deployment portion and the belt guider in such a manner that before the deployment portion is deployed, the sliding belt clogs the first vent holes, when the deployment portion is partially deployed, the second vent hole forms a flow channel together with the first vent holes so that the gas is discharged along the flow channel through the first vent holes, and when the deployment portion is fully deployed, the sliding belt clogs the first vent holes so that the gas is not discharged through the first vent holes.

2. The airbag cushion of claim 1, wherein when the deployment portion is deployed, the sliding belt is fixed to the deployment portion so that expansive force of the deployment portion is converted into tension acting on the sliding belt.

3. The airbag cushion of claim 2, wherein:

the sliding belt comprises clamping portions at its both ends, the clamping portions being attached to the deployment portion so that the sliding belt is fixed to the deployment portion, and

the sliding belt has clamping holes formed therein between the clamping portions.

4. The airbag cushion of claim 3, wherein:

the airbag cushion is supported by an airbag cushion retainer having clamping pins, and

before the airbag cushion is deployed, the sliding belt is disposed in a folded state so that the clamping holes are latched to the clamping pins and fixed thereto.

5. The airbag cushion of claim 4, wherein when the airbag cushion is deployed, the tension acts on the sliding belt and, therefore, the sliding belt slides between the belt guider and the deployment portion while the clamping holes are broken.

6. The airbag cushion of any one of claims 1, wherein the belt guider and the sliding belt are attached to an exterior of the deployment portion.

7. An airbag cushion comprising:

a deployment portion deployed by an incoming gas and having a pressure control vent hole formed therein;

a belt guider attached to the deployment portion and having first vent holes formed therein so that the gas introduced to the deployment portion can be discharged to the outside through the pressure control vent hole when the deployment portion is deployed; and

a sliding belt having a second vent hole formed therein corresponding to the first vent holes and fixed to the deployment portion in a state where part of the sliding belt is folded in such a manner that when the deployment portion is deployed, expansive force acting on the deployment portion is converted into tension and the sliding belt slides between the deployment portion and the belt guider at a specific distance,

wherein the sliding belt opens the first vent holes before the deployment portion is deployed so that the second vent hole forms a flow channel along which the gas introduced to the deployment portion is discharged together with the first vent holes, and slides between the deployment portion and the belt guider when the deployment portion is deployed so that the sliding belt clogs the first vent holes.

8. The airbag cushion of any one of claims 7, wherein the belt guider and the sliding belt are attached to an exterior of the deployment portion.

9. An airbag cushion comprising:

a deployment portion deployed by an incoming gas and having a pressure control vent hole formed therein;

a belt guider attached to the deployment portion and having first vent holes formed therein so that the gas introduced to the deployment portion can be discharged to the outside through the pressure control vent hole when the deployment portion is deployed; and

a sliding belt having a second vent hole formed therein corresponding to the first vent holes and fixed to the deployment portion in a state where part of the sliding belt is folded in such a manner that when the deployment portion is deployed, expansive force acting on the deployment portion is converted into tension and the sliding belt slides between the deployment portion and the belt guider at a specific distance,

where the sliding belt clogs the first vent holes before the deployment portion is deployed, and slides between the deployment portion and the belt guider when the deployment portion is deployed so that the second vent hole forms a flow channel along which the gas is discharged through the first vent holes together with the first vent holes.

10. The airbag cushion of any one of claims 9, wherein the belt guider and the sliding belt are attached to an exterior of the deployment portion.