Side airbag apparatus

Patent metadata

Field	Value
Publication number	US-11104288-B2
Application number	US-201816615008-A
Country	US
Kind code	B2
Filing date	Apr 17, 2018
Priority date	May 19, 2017
Publication date	Aug 31, 2021
Grant date	Aug 31, 2021

Abstract

Objective: To provide a side airbag apparatus that can protect a head portion and chest portion by an appropriate restraining force, while favorably inflating and expanding even a cushion that protects a head portion and chest portion with a small inflator, and that can ensure high OOP performance.Resolution Means: A configuration of a side airbag apparatus 100 according to the present invention includes: a bag-like cushion 110; an inflator 150; a first demarcating part 130a that demarcates the cushion 110 into a first chamber 132 on a vehicle rearward side and a second chamber 134 on a vehicle forward side, a second demarcating part 130b that demarcates a third chamber 136 on an upper side of the first chamber 132 and second chamber 134 of the cushion 110, a first inner vent 142 disposed above the first demarcating part 130, and a second inner vent 144 disposed above the second demarcating part 130b, which flows a gas flowing into the second chamber into the third chamber, and which is provided with a check valve structure that prevents a reverse flow of the gas.

First claim

The invention claimed is:

1. A side airbag apparatus that inflates and expands upward from a side surface of a vehicle seat,
the side airbag apparatus comprising:
a bag-shaped cushion;
an inflator that supplies a gas to the cushion to inflate and expand;
a first demarcating part that demarcates the cushion extending upward from a lower edge of the cushion when inflated and expanded into a first chamber on a vehicle rearward side and a second chamber on a vehicle forward side; and
a second demarcating part that extends from a front edge to a rear edge of the cushion when inflated and expanded through an upper end of the first demarcating part to demarcate a third chamber on an upper side of the first chamber and second chamber;
the first chamber being internally provided in the inflator and having a longitudinal shape in a vertical direction along a side surface of the seat; and
the side airbag apparatus further comprising:
a first inner vent disposed above the first demarcating part and that flows the gas supplied from the inflator from the first chamber to the second chamber; and
a second inner vent disposed above the second demarcating part, which flows the gas flowing into the second chamber to the third chamber, and which is provided with a check valve structure that prevents reverse flow of the gas from the third chamber to the second chamber.

2. The airbag apparatus according to claim 1 , further comprising a second inner vent disposed above the second demarcating part, which flows the gas flowing into the second chamber to the third chamber, and which is provided with a check valve structure that prevents reverse flow of the gas from the third chamber to the second chamber.

3. The airbag apparatus according to claim 1 or 2 , wherein the cushion inflates and expands at a seat far side.

4. The airbag apparatus according to claim 2 , wherein the cushion inflates and expands at a seat far side.

5. The side airbag apparatus according to claim 1 , wherein:
the second chamber is positioned to protect a shoulder portion and chest portion of an occupant,
the second demarcating part is positioned at a height corresponding to a neck portion of the occupant, and
the third chamber is positioned to protect a head portion of the occupant.

6. The side airbag apparatus according to claim 2 , wherein:
the second chamber is positioned to protect a shoulder portion and chest portion of an occupant,
the second demarcating part is positioned at a height corresponding to a neck portion of the occupant, and
the third chamber is positioned to protect a head portion of the occupant.

7. The side airbag apparatus according to claim 3 , wherein:
the second chamber is positioned to protect a shoulder portion and chest portion of an occupant,
the second demarcating part is positioned at a height corresponding to a neck portion of the occupant, and
the third chamber is positioned to protect a head portion of the occupant.

8. The side airbag apparatus according to claim 4 , wherein:
the second chamber is positioned to protect a shoulder portion and chest portion of an occupant,
the second demarcating part is positioned at a height corresponding to a neck portion of the occupant, and
the third chamber is positioned to protect a head portion of the occupant.

Assignees

• Autoliv Dev

Inventors

• Fuma Makoto
• KOBAYASHI Yuto

Classifications

• B60R2021/0058

  Shoulders · CPC title

• B60R21/264

  using instantaneous generation of gas, e.g. pyrotechnic (B60R21/268 takes precedence) · CPC title

• B60R2021/0048

  Head · CPC title

• B60R21/26

  characterised by the inflation fluid source or means to control inflation fluid flow {(arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10)} · CPC title

• B60R2021/23324

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