Airbag module with inverted seam and folding tab
An airbag module according to various implementations includes an inflatable cushion, a folding tab, and an inflator. The inflatable cushion includes a first panel and a second panel, each of the first and second panels including an inner surface and an outer surface. When the outer surfaces of the first and second panels are coupled together to form an inverted seam, the folding tab is coupled between the respective outer surfaces of the first and second panels. As a result, the inflatable cushion includes an increased strength while maintaining an ease of assembly using current inflatable cushion folding machines.
1. An airbag module for protecting an occupant of a vehicle seat, the airbag module comprising:
an inflatable cushion comprising a first panel and a second panel, the first panel comprising an inner surface and an outer surface and the second panel comprising an inner surface and an outer surface;
a folding tab comprising an inner portion and an outer portion; and
an inflator for providing an inflation gas for inflating the inflatable cushion;
wherein the outer surface of the first panel and the outer surface of the second panel are coupled to each other along a seam such that the outer surface of the first panel and the outer surface of the second panel face each other along the seam, the seam being adjacent a first portion of a perimeter of the first panel and a first portion of a perimeter of the second panel; and
wherein the inner portion of the folding tab is disposed between the outer surface of the first panel and the outer surface of the second panel and the folding tab is coupled to the first panel and the second panel by the seam.
2. The airbag module of claim 1 , wherein the seam comprises stitching.
3. The airbag module of claim 2 , wherein the seam comprises nylon thread.
4. The airbag module of claim 1 , wherein the outer portion of the folding tab extends beyond the seam in a direction away from the perimeter of the first panel and the perimeter of the second panel.
5. The airbag module of claim 1 , wherein the seam is a first seam, and wherein the inner surface of the first panel and the inner surface of the second panel are coupled to each other along a second seam such that the inner surface of the first panel and the inner surface of the second panel face each other along the second seam, the second seam being adjacent a second portion of the perimeter of the first panel and a second portion of the perimeter of the second panel.
6. The airbag module of claim 5 , wherein the second seam comprises stitching, wherein the second seam comprises nylon thread.
7. The airbag module of claim 5 , wherein the inner surface of the first panel, the inner surface of the second panel, the first seam, and the second seam define, at least in part, an inflation chamber for the inflation gas.
8. The airbag module of claim 7 , wherein a single piece of airbag fabric comprises the first panel and the second panel, wherein the first panel and the second panel are integrally coupled along a fold line, and wherein the inflation chamber is further defined by the fold line.
9. The airbag module of claim 1 , wherein a single piece of airbag fabric comprises the first panel and the second panel, wherein the first panel and the second panel are integrally coupled along a fold line.
10. The airbag module of claim 1 , wherein the first panel and the second panel are formed separately.
11. The airbag module of claim 1 , wherein the perimeter of the first panel and/or the perimeter of the second panel defines a locator tab.
12. The airbag module of claim 11 , wherein the inner portion of the folding tab is aligned with the locator tab.
13. The airbag module of claim 12 , wherein the locator tab defines a first alignment hole, and the inner portion of the folding tab defines a second alignment hole, wherein the first alignment hole is aligned with the second alignment hole.
14. The airbag module of claim 1 , wherein the inner surface of the first panel and the inner surface of the second panel are coated with a sealant material.
15. The airbag module of claim 14 , wherein the sealant material comprises silicone.
16. The airbag module of claim 1 , wherein the first panel and/or the second panel define a vent.
17. The airbag module of claim 16 , wherein the vent is a permanently open vent.
18. The airbag module of claim 1 , wherein the first panel and the second panel comprise a woven nylon material.