Airbag deployment trajectory control mechanism and method

• US 10,343,643 B2
• Filed: 03/29/2017
• Issued: 07/09/2019
• Est. Priority Date: 03/29/2017
• Status: Active Grant

• Current Assignee: NIO (Anhui) Holding Co., Ltd. (NIO, Inc. (China))
• Original Assignee: Nio Nextev Limited (NIO, Inc. (China))
• Inventors: Zhang, Heng, Rupp, Jeffrey D., Eckert, Christopher J., Deng, Yih-Charng
• Primary Examiner(s): Brown, Drew J
• Application Number:
  US15/473,132
• Publication Number:
  US 20180281739A1
• Time in Patent Office: 832 Days
• CPC Class Codes: B60R 21/203 in steering wheels or steering columns
• CPC Class Codes: B60R 21/2334 Expansion control features

Abstract

A system and method of inflating an airbag and trajectory control tube are disclosed. The system and method include detecting application of a force at at least one of a plurality of sensors, initiating an inflation system to cause inflation of the airbag and the trajectory control tube responsive to the detecting, inflating the trajectory control tube based on the initiating, inflating the airbag, and breaching the airbag and the trajectory control tube compartment. The system and method include guiding the airbag deployment trajectory via the trajectory control tube guides the airbag deployment trajectory. The system and method include the guiding occurs as the airbag begins to inflate, as the airbag inflates, after the airbag has inflated or before the airbag inflates.

Claims

1. A passive restraint system, the system comprising:

an airbag that is capable of deploying upon impact to restrain a body of at least one occupant;

at least one trajectory control tube adhered to the airbag, the at least one trajectory control tube capable of guiding a deployment trajectory of the airbag;

a compartment that initially houses the airbag and the at least one trajectory control tube, wherein the compartment is configured to be breached by inflation of the at least one trajectory control tube and/or inflation of the airbag; and

a diffuser plate having a first set of holes configured to channel gas to the airbag and having a second set of holes configured to channel gas to the at least one trajectory control tube, wherein a cross-sectional area of the first set of holes is smaller than a cross-sectional area of the second set of holes.

2. The system of claim 1 wherein the guiding occurs as the airbag begins to deploy.

3. The system of claim 1 wherein the guiding occurs as the airbag deploys.

4. The system of claim 1 wherein the guiding occurs after the airbag has deployed.

5. The system of claim 1 wherein the guiding occurs before the airbag deploys.

6. The system of claim 1 wherein the airbag is adhered to trajectory control tube via an end of the trajectory control tube.

7. The system of claim 6 wherein the adhering defines a position of the airbag relative to the trajectory control tube.

8. The system of claim 6 wherein the adhering comprise sewing.

9. The system of claim 6 wherein the adhering comprises glue.

10. The system of claim 1 further comprising a chute within the airbag that defines a location of the trajectory control tube.

11. The system of claim 1 wherein the trajectory control tube and the airbag are located with respect to reach other via friction.

12. The system of claim 1, wherein the at least one trajectory control tube comprises a continuous surface that defines an enclosed volume.