| 摘要 |
<p>A pedestrian airbag arrangement for a vehicle comprises an airbag (10) covering at least a part of the windscreen (52) and/or at least a part of at least one A-pillar of the vehicle when in deployed state, an inflator (14) being in fluid connection to said airbag (10), a retractor (20) for retracting said airbag (10), said retractor (20) comprising a spool (22) being connected to a spring element, and a flexible pull element (40) having two ends with the first end being connected to the airbag (10) and the second end being connected to the spool (22), wherein in the non-deployed state of the airbag (10) a part of the pull element (40) is wound onto the spool (22), such that the spool (22) is rotated by the unwinding pull element when the airbag (10) deploys whereby loading the spring element, and wherein the pull element (40) pulls away the airbag (10) from the windscreen (52) and/or the at least one A-pillar when the pull element (40) is rewound onto the spool (22) because of the force of the spring element. In order to provide a retractor which starts automatically with the retraction of the airbag when the airbag has reached a pre-determined position, the spool (22) has at least two sections with a first section (22a) having a larger diameter than the second section (22b), wherein the pull element (40) is wound onto the spool (22) in such a way that the unwinding on deployment starts at the first section (22a) and that after a predetermined unwinding length the pull element passes over to the second section (22b) of the spool (22) so that the force applied to the pull element rises.</p> |
