SIDE AIRBAG DEVICE FOR VEHICLE

• US 20130229003A1
• Filed: 11/17/2010
• Published: 09/05/2013
• Est. Priority Date: 11/17/2010
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Fukawatase, Osamu, Shamoto, Takehisa
• Granted Patent: US 9,085,279 B2
• Time in Patent Office: Days
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/0039 Body parts of the occupant or pedestrian affected by the accident
• CPC Class Codes: B60R 2021/23146 seat mounted
• CPC Class Codes: B60R 21/207 in vehicle seats
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2338 Tethers

Abstract

At a side airbag, integrally provided are a waist portion protecting bag portion that is expanded between a waist portion of a seated passenger and a vehicle body side portion, and a chest portion/shoulder portion protecting bag portion that is expanded between a chest portion and shoulder portion of the seated passenger and a vehicle body side portion. A non-inflating portion, to which gas is not supplied, is provided so as to extend from a peripheral edge portion of a vehicle front side of the side airbag to outer peripheral portions of the waist portion protecting bag portion and the chest portion protecting bag portion, so that a front side upper end portion of the waist portion protecting bag portion at a time of expansion is positioned at a lower side of a lap side webbing that restrains the waist portion of the seated passenger.

Claims

1. A side airbag device for a vehicle comprising:

an inflator that is provided at a side portion of a seat back, and jets-out gas at a time of a side collision; and

a side airbag that is stored in a folded-up state at a side portion of the seat back, and at which are integrally provided a waist portion protecting bag portion that, due to gas being supplied from the inflator, is expanded between a waist portion of a seated passenger and a vehicle body side portion, and a chest portion protecting bag portion that is expanded between at least a chest portion of the seated passenger and a vehicle body side portion,

wherein a non-inflating portion, to which the gas is not supplied, is provided so as to extend from a peripheral edge portion of a vehicle front side of the side airbag to outer peripheral portions of the waist portion protecting bag portion and the chest portion protecting bag portion, so that a front side upper end portion of the waist portion protecting bag portion at a time of expansion is positioned at a lower side of a webbing for waist portion restraining that is strip-shaped and restrains the waist portion of the seated passenger.

2. The side airbag device for a vehicle of claim 1, wherein the non-inflating portion is formed by a cloth-like member that connects, in a vehicle vertical direction, the waist portion protecting bag portion and the chest portion protecting bag portion.

3. The side airbag device for a vehicle of claim 2, wherein

the side airbag has an outer peripheral sewn portion at which a peripheral edge portion of a vehicle front side of the non-inflating portion is sewn, and

a turn-in portion, that turns-in toward a vehicle rear side at an upper side of the front side upper end portion of the waist portion protecting bag portion, is provided at the outer peripheral sewn portion.

4. The side airbag device for a vehicle of claim 2, wherein a hollowed-out portion, that is hollowed-out toward a vehicle rear side with respect to a line segment that connects, in a vehicle vertical direction, the front side upper end portion of the waist portion protecting bag portion and a front side upper end portion of the chest portion protecting bag portion, is formed at the non-inflating portion.

5. The side airbag device for a vehicle of claim 4, wherein the hollowed-out portion is formed in a range that extends from the front side upper end portion of the waist portion protecting bag portion to at least a front end portion of a lower portion of the chest portion protecting bag portion.

6. The side airbag device for a vehicle of claim 1, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.

7. The side airbag device for a vehicle of claim 3, wherein a hollowed-out portion, that is hollowed-out toward a vehicle rear side with respect to a line segment that connects, in a vehicle vertical direction, the front side upper end portion of the waist portion protecting bag portion and a front side upper end portion of the chest portion protecting bag portion, is formed at the non-inflating portion.

8. The side airbag device for a vehicle of claim 2, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.

9. The side airbag device for a vehicle of claim 3, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.

10. The side airbag device for a vehicle of claim 4, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.

11. The side airbag device for a vehicle of claim 7, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.

12. The side airbag device for a vehicle of claim 5, wherein, at the waist portion protecting bag portion, an outer periphery of a front side upper portion, that includes the front side upper end portion, and an outer periphery of a front side lower portion are both formed by arc-shaped curves in side view, and a radius of the outer periphery of the front side upper portion is set to be larger than a radius of the outer periphery of the front side lower portion.