Vehicle seat with built-in cushion airbag device

• US 9,126,510 B2
• Filed: 06/09/2014
• Issued: 09/08/2015
• Est. Priority Date: 06/07/2013
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hirako, Yutaka
• Primary Examiner(s): BROWN, DREW J
• Application Number:
  US14/299,122
• Publication Number:
  US 20140361520A1
• Time in Patent Office: 456 Days
• US Class Current: 1/1
• CPC Class Codes: B60N 2/42718 with anti-submarining systems
• CPC Class Codes: B60N 2/42763 with anti-submarining systems
• CPC Class Codes: B60R 2021/2078 in rear seats
• CPC Class Codes: B60R 2021/23153 specially adapted for rear seat passengers
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 21/207 in vehicle seats

Abstract

A vehicle seat with a built-in cushion airbag device includes an inflator that produces gas by being activated; and a cushion airbag that is divided by a tether into a plurality of inflating portions including at least a rear-side inflating portion arranged on a seat lower side of a rear portion of a seat cushion, and a front-side inflating portion arranged to a seat front side of the rear-side inflating portion, and that inflates toward a seat upper side, with the front-side inflating portion becoming higher than the rear-side inflating portion, by the gas produced by the inflator being supplied.

Claims

1. A vehicle seat with a built-in cushion airbag device, comprising:

an inflator that produces gas by being activated; and

a cushion airbag having a tether arranged with a seat width direction as a length direction, the cushion airbag is divided by the tether into a plurality of inflating portions including at least a rear-side inflating portion arranged on a seat lower side of a rear portion of a seat cushion, and a front-side inflating portion arranged to a seat front side of the rear-side inflating portion, and that inflates toward a seat upper side, with the front-side inflating portion becoming higher than the rear-side inflating portion, by the gas produced by the inflator being supplied.

2. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

the cushion airbag is divided into two of the inflating portions by the tether;

and

when the cushion airbag is inflated, the tether is arranged to a seat rear side of a seat longitudinal direction center portion of the cushion airbag.

3. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

when the cushion airbag is inflated, a portion of the front-side inflating portion protrudes farther toward the seat upper side than an upper surface of the seat cushion;

and

when the cushion airbag is inflated, the rear-side inflating portion is arranged to the seat lower side of the upper surface of the seat cushion.

4. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

the gas produced by the inflator is supplied to the rear-side inflating portion via the front-side inflating portion.

5. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

a position of a rear end of the cushion airbag is substantially aligned with a position of a front surface of a lower end portion of a seat back.

6. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

the cushion airbag device is built into a rear seat of a vehicle.

7. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

a plurality of communicating holes are formed in the tether;

and

the front-side inflating portion is communicated with the rear-side inflating portion by the communicating holes.

8. The vehicle seat with the built-in cushion airbag device according to claim 7, wherein

the inflator is housed inside of the front-side inflating portion;

and

the gas produced by the inflator is supplied into the front-side inflating portion, as well as into the rear-side inflating portion via the communicating holes in the tether.

9. The vehicle seat with the built-in cushion airbag device according to claim 1, wherein

the tether is divided;

and

the divided plurality of tethers are arranged lined up at predetermined intervals in a width direction of the cushion airbag.

10. The vehicle seat with the built-in cushion airbag device according to claim 9, wherein

the inflator is housed inside the front-side inflating portion;

and

the gas produced by the inflator is supplied into the front-side inflating portion, as well as into the rear-side inflating portion via a space between the tethers arranged lined up at predetermined intervals.

11. A vehicle seat with a built-in cushion airbag device, comprising:

an inflator that produces gas by being activated; and

a cushion airbag that is divided by a tether into a plurality of inflating portions including at least a rear-side inflating portion arranged on a seat lower side of a rear portion of a seat cushion, and a front-side inflating portion arranged to a seat front side of the rear-side inflating portion, and that inflates toward a seat upper side, with the front-side inflating portion becoming higher than the rear-side inflating portion, by the gas produced by the inflator being supplied, and when the cushion airbag is inflated, a portion of the front-side inflating portion protrudes farther toward the seat upper side than an upper surface of the seat cushion and the rear-side inflating portion is arranged to the seat lower side of the upper surface of the seat cushion.