# US 10,864,882 B2 · Airbag apparatus

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- Number: US 10,864,882 B2
- Document ID: US10864882B2
- Status: Granted
- Kind: B2
- Application number: 16/203,736
- Filed: 2018-11-29
- Published: 2019-07-04
- Granted: 2020-12-15
- Earliest claimed: 2017-12-28
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Yuya Obayashi; Seiji Kobata; Masahiro Sato
- Web page: https://patentgrep.com/patent/US10864882B2

## CPC

- B60R 21/23138: {specially adapted for side protection (B60R21/23184, B60R21/232 take precedence)}
- B60R 21/205: in dashboards
- B60R 21/213: in vehicle roof frames or pillars
- B60R 21/214: in roof panels
- B60R 21/232: Curtain-type airbags deploying mainly in a vertical direction from their top edge
- B60R 21/233: comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other (B60R21/232 takes precedence)
- B60R 21/2334: Expansion control features
- B60R 2021/0004: {Frontal collision}
- B60R 2021/0006: {Lateral collision}
- B60R 2021/0048: {Head}
- B60R 2021/161: {characterised by additional means for controlling deployment trajectory}
- B60R 2021/23107: {the bag being integrated in a multi-bag system}
- B60R 2021/23308: {the individual compartments defining the external shape of the bag}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

An airbag apparatus includes an airbag's bag body that inflates to be spread such that a front side and both sides of an occupant are surrounded. The airbag's bag body includes a first bag body, a second bag body, and a third bag body which are integrally formed. In a state in which the first bag body, the second bag body, and the third bag body have inflated to be spread, a lower portion of each of the bag bodies is disposed to be further attracted to the occupant side than an upper portion.

## Claims

### Claim 1

An airbag apparatus comprising:
an airbag's bag body that inflates to be spread such that a front side and both sides of an occupant are surrounded,
wherein the airbag's bag body includes a first bag body, a second bag body, and a third bag body which are integrally formed,
wherein in a state in which the first bag body, the second bag body, and the third bag body have inflated to be spread, lower portions of the first bag body and the second bag body are disposed to be further attracted to the occupant side than upper portions thereof, and
wherein in a state in which the second bag body have inflated to be spread, the second bag body is formed such that the length of a lower end of the second bag body is smaller than the length of an upper end thereof.

### Claim 2 (depends on 1)

The airbag apparatus according to claim 1,
wherein in the airbag's bag body, in the state in which the first bag body, the second bag body, and the third bag body have inflated to be spread, a top side on which upper ends of the bag bodies are connected to each other is formed to have a length dimension larger than a length dimension of a bottom side on which lower ends of the bag bodies are connected to each other.

### Claim 3 (depends on 1)

The airbag apparatus according to claim 1, further comprising:
an inflator that injects gas into the first bag body, the second bag body, and the third bag body; and
a gas flow channel that is formed to communicate to the third bag body from the first bag body through the second bag body,
wherein the inflator is attached to the upper end of the first bag body, and
wherein the gas flow channel is formed downward to the second bag body from the upper portion of the first bag body, is formed in the lower portion of the second bag body, and is formed upward to the third bag body from the lower portion of the second bag body.

### Claim 4 (depends on 1)

The airbag apparatus according to claim 1, further comprising:
a first gas flow channel that is formed in the lower portion of the second bag body; and
a second gas flow channel that is formed in the upper portion of the second bag body,
wherein the first flow channel is formed to be a flow channel having a cross-sectional area larger than a cross-sectional area of the second flow channel.

### Claim 5 (depends on 4)

The airbag apparatus according to claim 4,
wherein the upper portion of the second flow channel has a tapered shape.

### Claim 6 (depends on 1)

The airbag apparatus according to claim 1,
wherein an end portion of the gas flow channel formed in the third bag body has a closed structure.

### Claim 7 (depends on 4)

The airbag apparatus according to claim 4,
wherein the first gas flow channel is formed along a vehicle width direction, and the second gas flow channel is formed to communicate with the first gas flow channel and extend upward in the second bag body.