# US 2014/0151989 A1 · Airbag device

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- Number: US 2014/0151989 A1
- Document ID: US20140151989A1
- Status: Published application
- Kind: A1
- Application number: 14/093,088
- Filed: 2013-11-29
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Nihon Plast Co., Ltd.
- Applicants: Nihon Plast Co., Ltd.
- Inventors: Hiroyuki IWAMOTO; Yohei KIUCHI; Takahiro YAMAUCHI; Hideaki SAITO; Hideki MOCHIZUKI
- Web page: https://patentgrep.com/patent/US20140151989A1

## CPC

- B60R 21/239: characterised by their venting means
- B60R 21/2338: Tethers
- B60R 2021/23382: {Internal tether means}
- B60R 2021/2395: {comprising means to control the venting}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

An airbag includes a vent hole discharging gas, a slide tether performing transition of a state of the vent hole, from an open state via a close state to the open state, by changing between a slackened state and an extended state, and a slide tether cover guiding the slide tether. The other end portion in a longitudinal direction of the slide tether body portion constitutes a first supporting point by being fastened in a direction going from the vent hole toward a mounting position of the inflator, bifurcated portions constitutes a second supporting point by the other end portion of the slide tether cover being fastened, terminal end portions of leg piece portions constitute a third supporting point by being respectively fastened. When the airbag is deployed, transition of a state of the vent hole is performed.

## Claims

### Claim 1

An airbag device having a hollow airbag which constrains an occupant by being deployed by gas supplied by an inflator, and which includes a first face-constituting base fabric facing a side of the occupant, and a second face-constituting base fabric facing a side opposite to the occupant,
the airbag comprising:
a vent hole which is provided in the second face-constituting base fabric, for discharging the gas;
a slide tether which is provided from an inner surface of the second face-constituting base fabric to an inner surface of the first face-constituting base fabric, and which performs transition of a state of the vent hole, from an open state via a close state to the open state, by changing between a slackened state and an extended state; and
a slide tether cover which is provided with an opening communicated with the vent hole, one end of which is fastened to the inner surface of the second face-constituting base fabric, and which guides the slide tether,
wherein the slide tether includes a body portion, bifurcated portions which are bifurcated from one end portion in a longitudinal direction of the body portion, and leg piece portions which are respectively extended from the bifurcated portions,
wherein the other end portion in the longitudinal direction of the body portion constitutes a first supporting point by being fastened to an inner surface of the second face-constituting base fabric in a direction going from the vent hole toward a mounting position of the inflator,
wherein the bifurcated portions constitute a second supporting point by the other end portion of the slide tether cover being fastened to the inner surface of the second face-constituting base fabric,
wherein extended terminal end portions of the leg piece portions constitute a third supporting point by being respectively fastened to the inner surface of the first face-constituting base fabric, and
wherein, when the airbag is deployed, transition of a state of the vent hole is performed based on a force acting in an airbag deploying direction which is generated with the first supporting point and the third supporting point as a starting point, and a force acting, in a direction intersecting with the airbag deploying direction, which is generated with the second supporting point as a starting point.

### Claim 2 (depends on 1)

The airbag device according to claim 1, wherein the vent hole is provided near an insertion hole of the inflator.

### Claim 3 (depends on 1)

The airbag device according to claim 1, further comprising:
a stopper piece which is arranged on the slide tether and restricts backward motion of the slide tether toward the vent hole.