# US 9,751,490 B1 · Side airbag for vehicle

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- Number: US 9,751,490 B1
- Document ID: US9751490B1
- Status: Granted
- Kind: B1
- Application number: 15/258,125
- Filed: 2016-09-07
- Granted: 2017-09-05
- Earliest claimed: 2016-04-21
- Assignees: Hyundai Motor Company
- Applicants: Hyundai Motor Company
- Inventors: Eung Man Kim; Kyu Jong Kim; Jae Soon Cho
- Web page: https://patentgrep.com/patent/US9751490B1

## CPC

- B60R 21/23138: {specially adapted for side protection (B60R21/23184, B60R21/232 take precedence)}
- B60R 21/239: characterised by their venting means
- B60R 2021/23146: {seat mounted}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A side airbag for a vehicle is provided. The side airbag includes an airbag cushion and a diffuser that is configured to diffuse gas within the interior of the airbag cushion. A vent aperture is configured to communicate within an interior of the airbag cushion to an exterior of the airbag cushion. A first seam line is formed in a shape that obstructs the vent aperture.

## Claims

### Claim 1

A side airbag for a vehicle, comprising:
an airbag cushion disposed between an occupant and a door trim;
a diffuser disposed at a first side of the airbag cushion, and configured to diffuse gas supplied from an inflator within the airbag cushion;
a vent aperture disposed at a second side of the airbag cushion, and configured to communicate within an interior of the airbag cushion to an exterior thereof;
a first seam line spaced apart from the vent aperture by a predetermined distance in a direction toward the diffuser, and formed in a shape that obstructs the vent aperture;
a second seam line spaced apart from the first seam line by a predetermined distance in a direction toward the diffuser, and formed in a shape that obstructs a second end of the first seam line; and
a third seam line that crosses the airbag cushion in a direction from the diffuser to a position below the vent aperture and separates the airbag cushion into upper and lower portions,
wherein a seamed portion of the second seam line is separated when a force equal to or greater than a predetermined level is applied to the second seam line such that the gas is vented out by making a detour toward a position below the first seam line after the cushion is inflated, the force being generated by an inflation pressure of the airbag cushion.

### Claim 2 (depends on 1)

The side airbag of claim 1, wherein a first end of the first seam line coincides with an outer seam line of the airbag cushion.

### Claim 3 (depends on 2)

The side airbag of claim 2, wherein the first end of the first seam line coincides with the outer seam line of the airbag cushion at a position above the vent aperture, and a second end of the first seam line is spaced apart from the vent aperture by a predetermined distance in the direction toward the diffuser.

### Claim 4 (depends on 1)

The side airbag of claim 1, wherein when the airbag cushion is fully inflated, the vent aperture is disposed between the door trim and an armrest.

### Claim 5 (depends on 1)

The side airbag of claim 1, wherein the airbag cushion is configured to be inflated from a side portion of a seatback, and a size of the airbag cushion corresponds to a length of the seatback.