Curtain airbag for vehicle

• US 10,131,314 B2
• Filed: 12/06/2016
• Issued: 11/20/2018
• Est. Priority Date: 09/21/2016
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Yoo, Joo Seon, Choi, Jae Ho
• Primary Examiner(s): English, James A
• Application Number:
  US15/370,123
• Publication Number:
  US 20180079382A1
• Time in Patent Office: 714 Days
• CPC Class Codes: B60R 2021/0009 Oblique collision
• CPC Class Codes: B60R 2021/0048 Head
• 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 2021/23384 having ends which are movable or detachable during deployment
• CPC Class Codes: B60R 2021/2395 comprising means to control the venting
• CPC Class Codes: B60R 21/203 in steering wheels or steering columns
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• 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
• CPC Class Codes: B60R 21/239 characterised by their venting means
• CPC Class Codes: B60R 21/276 with means to vent the inflation fluid source, e.g. in case of overpressure B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239

Abstract

A curtain airbag for a vehicle may include a curtain airbag cushion; a venting chamber that fills a space between an end portion of a frontal airbag on the door window side and an A pillar; and a first vent opening formed in a portion of the venting chamber, the portion being near the door window.

Claims

1. A curtain airbag for a vehicle, comprising:

a curtain airbag cushion that is deployed between a door window and an occupant;

a venting chamber that is disposed between a front end portion of the curtain airbag cushion and an A pillar of the vehicle, is thicker than the curtain airbag cushion, and fills a space between an end portion of a frontal airbag, the end portion being adjacent to the door window and the A pillar when the venting chamber is deployed;

a first vent opening formed in a portion of the venting chamber, the portion being adjacent to the door window; and

a first tether that is connected between the first vent opening and an inside surface of the venting chamber,

wherein the first tether is loosened and thus the first vent opening is configured to be opened when an external force is applied to a portion of the venting chamber, the portion being connected to the first tether.

2. The curtain airbag for the vehicle according to claim 1, wherein the first tether is a panel tether and is mounted to extend in a vertical direction in the vehicle.

3. The curtain airbag for the vehicle according to claim 1, wherein the first vent opening is formed in the venting chamber, in a position that is adjacent to the door window and does not contact with the A pillar.

4. The curtain airbag for the vehicle according to claim 1, further including a second vent opening through which the curtain airbag cushion and the venting chamber communicate with each other.

5. The curtain airbag for the vehicle according to claim 4, wherein the second vent opening is a vent opening that is configured to be opened or closed under control.

6. The curtain airbag for the vehicle according to claim 4, further including:

a first tether cutter;

a cover for opening or closing the second vent opening; and

a second tether that is connected between the cover and the first tether cutter,

wherein the second vent opening continues open for a first predetermined time and is then closed by the cover when the second tether is cut by the first tether cutter.

7. The curtain airbag for the vehicle according to claim 1, further including a third tether that is connected between a center portion of the first tether and a portion of the inside surface of the venting chamber,

wherein an angle between fractions of the first tether disposed on a first side and a second side of a position at which the first tether and the third tether are connected to each other is an obtuse angle and wherein an angle between a portion of the first tether, the portion being adjacent to the first bent opening, and the third tether is an obtuse angle.