ACTIVE BOLSTER WITH DIRECTIONAL VENT INTO CONCEALED BUFFER ZONE.

摘要

An active bolster includes a plastic trim wall that deploys toward a passenger compartment and a plastic-molded bladder member joined with the trim wall by a hot weld seam to form an inflatable bladder. The bladder member includes at least one substantially circumferential pleat for unfolding in response to an inflation gas. A reaction member is joined to a central region of the bladder member to provide a reaction surface. The pleat has a peak disposed proximate to the reaction member and an outer band between the peak and the weld seam at least a portion of which extends perpendicularly to the reaction member. A buffer zone is formed circumjacent the outer band between the trim wall and the reaction member. The pleat has a vent opening formed in the outer band providing an unobstructed path for inflation gas from the inflatable bladder to the buffer zone.