Airbag tear seam

Details Airbag tear seam Airbag tear seam

B - Operations, Transporting

60

R

B60R 21/16 (2006.01) B60R 21/20 (2006.01)

Patent

CA 2330750

A steering wheel assembly (20) has a unique tear seam (26) design. The tear seam is incorporated in an airbag scrim (24) that covers an airbag when the airbag is mounted in the steering wheel assembly. In the most preferred embodiment the tear seam is a straight line that bisects the airbag scrim. The tear seam is formed from three walls (80, 82, 84) joined by a first joint (86) and a second joint (88). The first joint is substantially a right angle joint and the second joint is a radiused joint. Because of its shape, the first joint is less fracture resistant than the second joint. The tear seam design permits a more efficient deployment of the airbag.

Ensemble volant (20) qui possède une conception de ligne de déchirure (26) unique en son genre. Ladite ligne est incluse dans une enveloppe (24) qui couvre l'airbag lorsque ce dernier est monté dans l'ensemble volant. Dans le mode de réalisation idéal, la ligne de déchirure est une ligne droite qui coupe l'enveloppe. La ligne de déchirure est formée de trois parois (80, 82, 84) jointes par un premier raccord (86) et un second raccord (88). Le premier raccord est un raccord à angle droit et le second raccord est un raccord arrondi. En raison de sa forme, le premier raccord est moins résistant à la rupture que le second raccord. La conception de ligne de déchirure selon la présente invention permet un déploiement plus efficace de l'airbag.

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