Side airbag device-installed vehicle seat

Patent metadata

Field	Value
Publication number	US-9969351-B2
Application number	US-201615350735-A
Country	US
Kind code	B2
Filing date	Nov 14, 2016
Priority date	Dec 16, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A side airbag device-installed vehicle seat including: a side frame; a side airbag main body that is partitioned into a front bag section and a rear bag section, and in which a front portion of the rear bag section is positioned further toward the seat front side than the front flange portion at least in an inflated and deployed state; and an inner bag section that extends out from the front portion of the rear bag section, past a seat front of the front flange portion, and to a seat width direction inner side of the side frame, and in which an internal portion of the inner bag section in communication with the inside of the front portion of the rear bag section is supplied with gas from the inflator and inflates within the side section.

First claim

What is claimed is:

1. A side airbag device-installed vehicle seat comprising:
a side frame that is provided inside a side section of a seatback, and that, as viewed along a height direction of the seatback, includes a side wall portion extending along a front-rear direction of the seatback and a front flange portion extending from a front end of the side wall portion toward a seat width direction inner side;
a side airbag main body that is partitioned into a front bag section and a rear bag section, internal portions of the front bag section and the rear bag section being in communication with each other through an inner vent hole, that is stowed in a folded state inside the side section at a seat width direction outer side of the side frame, that receives a supply of gas from an inflator housed inside the rear bag section and inflates and deploys toward a seat front side of the side section, and in which a front portion of the rear bag section is positioned further toward the seat front side than the front flange portion at least in an inflated and deployed state; and
an inner bag section that extends out from the front portion of the rear bag section, past a seat front of the front flange portion, and to a seat width direction inner side of the side frame, and in which an internal portion of the inner bag section in communication with the inside of the front portion of the rear bag section is supplied with gas from the inflator and inflates within the side section.

2. The side airbag device-installed vehicle seat of claim 1 , wherein:
the side airbag main body is formed with a communication port at a location configuring the front portion of the rear bag section and facing the seat width direction inner side in the inflated and deployed state;
the inner bag section is formed by a base cloth that is separate from a base cloth of the side airbag main body; and
a peripheral edge portion of an opening formed in a base end portion of the inner bag section is joined to a peripheral edge portion of the communication port.

3. The side airbag device-installed vehicle seat of claim 1 , wherein:
the inner bag section is integrally formed to the rear bag section by an extension portion where a base cloth of the rear bag section is extended from the front portion, and extends toward a side on the seat width direction inner side of the rear bag section in the inflated and deployed state; and
the front bag section is formed by a base cloth that is separate from the base cloth of the rear bag section and is joined to the front portion of the rear bag section.

4. The side airbag device-installed vehicle seat of claim 1 , wherein
the side frame includes a reaction force plate portion that extends out obliquely from a seat width direction inner end portion of the front flange portion toward a seat rear side and the seat width direction inner side, and that faces the inner bag section from the seat width direction outer side.

5. The side airbag device-installed vehicle seat of claim 1 , wherein:
the seatback includes a frame section configured including the side frame, and a seatback pad covering the frame section; and
the folded side airbag main body and the inflator are attached to the side wall portion of the side frame, and a leading end portion of the inner bag section is coupled to the frame section.

6. The side airbag device-installed vehicle seat of claim 1 , wherein:
the rear bag section is partitioned into an upper chamber, a vertical direction intermediate chamber, and a lower chamber that are in communication with each other at the front portion side;
the inflator is housed in the vertical direction intermediate chamber; and
the inside of the vertical direction intermediate chamber and the inside of the inner bag section are in communication with each other directly, and not through the inside of the upper chamber and the inside of the lower chamber.

7. The side airbag device-installed vehicle seat of claim 6 , wherein the inner vent hole is configured by:
an upper side inner vent hole that places the inside of the upper chamber and the inside of the front bag section in communication with each other; and
a lower side inner vent hole that places the inside of the lower chamber and the inside of the front bag section in communication with each other.

8. The side airbag device-installed vehicle seat of claim 2 , further comprising:
a check valve that is provided so as to be capable of opening and closing the communication port, that permits a flow of gas from inside the rear bag section to inside the inner bag section by opening the communication port, and restricts a flow of gas from inside the inner bag section to inside the rear bag section by closing off the communication port.

9. The side airbag device-installed vehicle seat of claim 1 , wherein the inner bag section is stowed inside the side section in a state spread out in a flat shape, or in a state in which a leading end side of the inner bag section is folded in two.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ohno Mitsuyoshi
• Nagura Hiroyuki
• Kunisada Masato
• Fujiwara Yusuke
• Nakashima Atsushi

Classifications

• B60R21/23138

  specially adapted for side protection (B60R21/23184, B60R21/232 take precedence) · CPC title

• B60R2021/23107

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

• B60R21/207 Primary

  in vehicle seats · CPC title

• B60R2021/23538

  Sewing · CPC title

• B60R21/239 Primary

  characterised by their venting means · CPC title