Knee airbag module

US10821931B2 · kind B2 · utility

Assignee

• TRW AUTOMOTIVE GMBH · DE

Inventors

• Daniel Elija · Tegernsee, DE
• Werner Freisler · Schwäbisch Gmünd, DE

Key dates

• Filing date: Feb 3, 2017
• Grant date: Nov 3, 2020
• Expiry date: Apr 22, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/23382
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A knee airbag module of a vehicle occupant restraint system comprises an outer housing (14) in which an airbag (20) folded into an airbag package prior to its deployment as well as an inflator (16) generating filling gas for filling the airbag (20) are accommodated. In the outer housing (14) an exit opening (22) is formed through which the airbag (20) leaves the outer housing (14) during deployment. The airbag (20) is subdivided into plural chambers (28a-28f) arranged in series and being in fluid communication. The chamber closest to the inflator (28a) is separated from an adjacent chamber (28b) by a wall (32) which in the inflated airbag (20) extends substantially in the area of the exit opening (22) along the exit opening (22).