ACTIVE BOLSTER WITH BLADDER MEMBER HOT WELDED TO REACTION PLATE.

摘要

An active bolster for an automotive vehicle includes a plastic-molded trim wall that deploys outwardly during a crash. A plastic-molded reaction plate is mounted as a deployment base. A plastic-molded bladder member is joined around a substantially sealed perimeter with the trim wall to form an inflatable bladder. The bladder member includes at least one substantially circumferential pleated baffle around a central attachment region. The central attachment region includes an attachment boss projecting toward an attachment pad on the reaction plate to form a hot weld. The attachment boss has an arched cross section defining a weld surface with an apex. The weld surface is hot welded to the attachment pad such that the apex makes first contact with the attachment pad, wherein compression of the bladder member with the reaction plate creates a contact edge moving radially outward from the apex to expel gas from the hot weld.