Airbag apparatus

Patent metadata

Field	Value
Publication number	US-10589707-B2
Application number	US-201815886886-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 2, 2018
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

An airbag apparatus includes an airbag and an inflator. The airbag is configured to be deployed and inflated by the inflation gas at a position forward of a vehicle seat. The airbag includes a main bag member, an auxiliary bag member, and a tether. The main bag member is configured to be attached to a base member located at a position forward of the vehicle seat in the vehicle. The inflation gas is supplied from the inflator to the main bag member. The auxiliary bag member has a smaller volume than the main bag member and projects rearward from the main bag member. The tether extends across a boundary portion between the main bag member and the auxiliary bag member. A communicating portion, which allows communication between the main bag member and the auxiliary bag member, is provided around the tether in the boundary portion.

First claim

The invention claimed is:

1. An airbag apparatus comprising:
an airbag; and
an inflator, which supplies inflation gas to the airbag in response to an impact applied to a front section of a vehicle, wherein
the airbag is configured to be deployed and inflated by the inflation gas at a position forward of a vehicle seat,
the airbag includes
a main bag member, which is configured to be attached to a base member located at a position forward of the vehicle seat in the vehicle, wherein the inflation gas is supplied from the inflator to the main bag member,
an auxiliary bag member, which has a smaller volume than the main bag member and projects rearward from the main bag member, and
a tether, which extends across a boundary portion between the main bag member and the auxiliary bag member,

a communicating portion, which allows communication between the main bag member and the auxiliary bag member, is provided around the tether in the boundary portion,
the main bag member includes
a front main panel, which is configured to be attached to the base member; and
a rear main panel, which is arranged on a rear side of the front main panel and is joined to an outer peripheral portion of the front main panel at an outer peripheral portion of the rear main panel, and

the tether and the communicating portion are arranged in the rear main panel.

2. The airbag apparatus according to claim 1 , wherein the tether is formed integrally with the rear main panel.

3. The airbag apparatus according to claim 2 , wherein the auxiliary bag member includes
an annular front auxiliary panel, which is arranged on a rear side of the rear main panel and is joined to the rear main panel at an inner peripheral portion of the front auxiliary panel, and
a rear auxiliary panel, which is arranged on a rear side of the front auxiliary panel and is joined to an outer peripheral portion of the front auxiliary panel at an outer peripheral portion of the rear auxiliary panel.

4. The airbag apparatus according to claim 3 , wherein the tether includes a plurality of strips, which extends radially from a central section of the boundary portion between the main bag member and the auxiliary bag member.

Assignees

• Toyoda Gosei Kk

Inventors

• Zhang Ning
• Ohara Shiro
• Shrivatri Aviral

Classifications

• B60R21/2035 Primary

  using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit (steering wheel covers with tear lines B60R21/21656; assembling of modules B60R21/217) · CPC title

• B60R2021/23324

  Inner walls crating separate compartments, e.g. communicating with vents · CPC title

• B60R2021/0048

  Head · CPC title

• B60R2021/23107

  the bag being integrated in a multi-bag system · CPC title

• B60R21/2338

  Tethers · CPC title