# US 11,077,818 B2 · Airbag device

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- Number: US 11,077,818 B2
- Document ID: US11077818B2
- Status: Granted
- Kind: B2
- Application number: 16/654,642
- Filed: 2019-10-16
- Published: 2020-04-23
- Granted: 2021-08-03
- Earliest claimed: 2018-10-19
- Assignees: Toyoda Gosei Co., Ltd.
- Applicants: Toyoda Gosei Co., Ltd.
- Inventors: Takamitsu Murai; Shunsuke Kamei; Hisanori Kihara
- Web page: https://patentgrep.com/patent/US11077818B2

## CPC

- B60R 21/215: characterised by the covers for the inflatable member {(B60R21/2176 takes precedence)}
- B60R 11/04: Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
- B60R 21/203: in steering wheels or steering columns
- B60R 21/216: comprising tether means for limitation of cover motion during deployment
- B60R 2011/001: {Vehicle control means, e.g. steering-wheel or column}
- B60R 2021/21537: {characterised by hinges}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

An airbag device includes an airbag, an airbag cover which covers the airbag, and a holder which holds the airbag and the airbag cover. The airbag cover includes a door portion which is pushed by the inflating airbag and opened with a hinge portion around a rotation center. A functional component is provided on the door portion and connected to and held by a deformable holding member. The holding member includes a distal side connecting portion connected to the functional component, a proximal side connecting portion connected to a part which can ensure an attachment strength, and a deformation portion which is provided between the distal and proximal side connecting portions and deformed to maintain a connection and holding state of the distal side connecting portion with the functional component and reduce a centrifugal force of the functional component acting on the hinge portion when the airbag is inflated.

## Claims

### Claim 1

An airbag device configured to be mounted on a vehicle, the airbag device comprising:
an airbag configured to be unfolded and inflated from a folded state by flowing inflation gas therein;
an airbag cover configured to cover the folded airbag; and
a holder configured to hold the airbag and the airbag cover,
wherein the airbag cover includes:
a door portion configured to be pushed by the inflating airbag and opened with a hinge portion being used as a rotation center; and
an attachment wall portion provided so as to surround a periphery of the door portion and attached to the holder,
wherein a functional component is provided on the door portion,
wherein the functional component is connected to and held by a deformable holding member, and
wherein the holding member includes:
a distal side connecting portion provided on a distal end portion side thereof and connected to the functional component;
a proximal side connecting portion connected to a part which excludes the door portion and the hinge portion and can ensure an attachment strength; and
a deformation portion provided between the distal side connecting portion and the proximal side connecting portion and configured to be deformed to maintain a connection and holding state of the distal side connecting portion with the functional component and to reduce a centrifugal force of the functional component acting on the hinge portion when the airbag is inflated.

### Claim 2 (depends on 1)

The airbag device according to claim 1,
wherein the proximal side connecting portion of the holding member is connected to the attachment wall portion of the airbag cover or the holder.

### Claim 3 (depends on 2)

The airbag device according to claim 2,
wherein the functional component is detachably assembled so as to be prevented from being displaced with respect to the door portion, and
wherein the holding member is formed of a plastically deformable material.

### Claim 4 (depends on 2)

The airbag device according to claim 2,
wherein the functional component is detachably assembled so as to be prevented from being displaced with respect to the door portion, and
wherein the holding member is formed of a flexible material.

### Claim 5 (depends on 1)

The airbag device according to claim 1,
wherein the functional component is a camera configured to capture an image of an occupant.

### Claim 6 (depends on 5)

The airbag device according to claim 5,
wherein an ornament is provided on a front surface side of the door portion, and
wherein the ornament includes a light transmission part, and a lens portion of the camera is provided on a back surface side of the light transmission part.

### Claim 7 (depends on 1)

The airbag device according to claim 1,
wherein the airbag device is configured to be mounted in a boss portion near a center of a ring portion gripped at a time of steering in a steering wheel.