Directional device for deployment of an airbag

• US 8,181,986 B2
• Filed: 01/31/2008
• Issued: 05/22/2012
• Est. Priority Date: 02/06/2007
• Status: Active Grant

• Current Assignee: LISA Drã¤Xlmaier GmbH (Fritz Dräxlmaier Holding GmbH)
• Original Assignee: LISA Drã¤Xlmaier GmbH (Fritz Dräxlmaier Holding GmbH)
• Inventors: Schlemmer, Christian
• Primary Examiner(s): Fleming, Faye M
• Assistant Examiner(s): Freedman, Laura
• Application Number:
  US12/012,227
• Publication Number:
  US 20080203709A1
• Time in Patent Office: 1,573 Days
• Field of Search: 280/728.3, 280/732, 280/743.1, 280/743.2
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 21/2165 characterised by a tear line for defining a deployment opening

Abstract

A directional device for the deployment of an airbag includes a deflection element that directs airbag deployment, the deflection element on actuation of the airbag exerting a pressure on the airbag which is directed away from the windscreen during the entire airbag deployment phase such that the airbag is directed away from the windscreen on its deployment. The directional device prevents damage/destruction of the windscreen on actuation of the airbag and thus improves protection of the vehicle occupants. The directional device is also capable of being variable fixed and replaceable in an airbag configuration/covering and may also optionally be integrated therein such that simplification of the development or series production of the airbag configuration is achieved.

Claims

1. A directional device for the deployment of an airbag, the directional device comprising a flexible deflection element integrally formed with an attachment section, wherein the attachment section is adapted to be directly fixed to an instrument panel substrate, to an airbag firing channel formed beneath the instrument panel substrate, or to an airbag module containing a folded airbag, the deflection element directing airbag deployment, said deflection element on actuation of the airbag, exerting a targeted pressure upon the airbag and influencing a direction of deployment during an entire airbag deployment phase, wherein the flexible deflection element and the airbag do not contact a windscreen during the entire airbag deployment phase, and wherein the deflection element remains integral with the attachment section during the entire airbag deployment phase.

2. Directional device according to claim 1 wherein the deflection element is pivotable about a rigid hinge.

3. Directional device according to claim 2 wherein the deflection element is pivotable on actuation of the airbag into no more than one position in which the deflection element is essentially parallel to the windscreen.

4. Directional device according to claim 1, wherein the directional device has an essentially L-shaped cross-section, a long section of the L-shaped cross section forms the deflection element and a short section of the L-shaped cross section is an attachment section.

5. Directional device according to claim 1 wherein a fin projects out of the attachment section of said directional device in a direction that is substantially parallel to the deflection element.

6. Directional device according to claim 1, wherein a directing function of the deflection element is predetermined by a degree of flexibility of the directional device.

7. Directional device according to claim 1, wherein the deflection element has a stiffening rib.

8. Directional device according to claim 1, wherein said directional device has an attachment that can be converted from detachable to non-detachable.

9. Directional device according to claim 1, wherein said directional device includes a gliding layer.

10. Directional device according to claim 1, wherein the deflection element exerts a targeted pressure away from the windscreen.

11. Directional device according to claim 1, wherein said directional device is integrated into an instrument panel substrate, to an airbag firing channel formed beneath the instrument panel substrate, or to an airbag module containing a folded airbag.

12. Directional device according to claim 1, wherein said directional device further comprises at least one component, the at least one component comprising a material selected from the group consisting of thermosetting materials and thermoplastics.

13. Directional device according to claim 12, wherein the material further comprises at least one filling material.

14. Directional device according to claim 13, wherein the at least one filling material is selected from the group consisting of fiberglass, knitted fabric inserts, non-woven system inserts, oscillatable metal inserts, or glass mat inserts.