Vehicular curtain air bag device

• US 10,442,386 B2
• Filed: 08/17/2017
• Issued: 10/15/2019
• Est. Priority Date: 09/14/2016
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hioda, Seiji, Ohara, Kouji
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): Johns, Hilary L
• Application Number:
  US15/679,445
• Publication Number:
  US 20180072256A1
• Time in Patent Office: 789 Days
• Field of Search: 2807302
• CPC Class Codes: B60R 2021/0006 Lateral collision
• CPC Class Codes: B60R 2021/0009 Oblique collision
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 2021/23153 specially adapted for rear seat passengers
• CPC Class Codes: B60R 2021/23308 the individual compartments defining the external shape of the bag
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge

Abstract

There is provided a vehicular curtain air bag device including a curtain air bag, the curtain air bag including: a rear seat chamber that inflates and deploys between a head of a rear seat occupant and a vehicle interior side section from an upper end section of the vehicle interior side section; and a headrest chamber extending from a rear end section of the rear seat chamber, the headrest chamber inflating and deploying between a headrest of a rear seat and the vehicle interior side section in a vehicle width direction.

Claims

1. A vehicular curtain air bag device comprising a curtain air bag, the curtain air bag including:

a rear seat chamber configured to inflate and deploy between a head of a rear seat occupant and a vehicle interior side section from an upper end section of the vehicle interior side section; and

a headrest chamber configured to extend to a rearward side from a lower section of a rear end section of the rear seat chamber, the headrest chamber being configured to inflate and deploy between a headrest of a rear seat and the vehicle interior side section in a vehicle width direction.

2. The vehicular curtain air bag device according to claim 1, wherein

the curtain air bag is folded in a vehicle up-down direction to be housed in an upper end section of the vehicle interior side section, and at least a part of the folded headrest chamber is covered from a vehicle interior inner side by a C pillar garnish.

3. The vehicular curtain air bag device according to claim 1, wherein

the headrest chamber is a delay chamber that starts to inflate and deploy later than the rear seat chamber.

4. The vehicular curtain air bag device according to claim 1, wherein

an inflated width of the headrest chamber, in the vehicle width direction, is smaller than that of the rear seat chamber.

5. The vehicular curtain air bag device according to claim 1, wherein

an inflated width of the headrest chamber, in a vehicle up-down direction, is smaller than that of the rear seat chamber.

6. The vehicular curtain air bag device according to claim 1, wherein

the curtain air bag further includes a non-inflating section that is configured to be between the rear seat chamber and the headrest chamber.

7. The vehicular curtain air bag device according to claim 1, wherein

an internal capacity of the headrest chamber is configured to be smaller than an internal capacity of the rear seat chamber.

8. The vehicular curtain air bag device according to claim 7, wherein

an inflated width of the headrest chamber, in a vehicle up-down direction, is smaller than that of the rear seat chamber.

9. The vehicular curtain air bag device according to claim 7, wherein

an inflated width of the headrest chamber, in the vehicle width direction, is smaller than that of the rear seat chamber.

10. The vehicular curtain air bag device according to claim 1, wherein

a lower end of the inflated and deployed headrest chamber is configured to be positioned more upward than an upper end of a seat back of the rear seat.