FIELD: transportation.
SUBSTANCE: active buffer for an interior trim surface of a vehicle has a trim panel with a closed-loop bonding section on an inside surface. First stud extends from an inside trim panel surface at the closed-loop bonding section, and a second stud extends from the panel inside surface radially outward of the bonding section. Thermoplastic expandable bladder member has a welding flange along an peripheral edge which is hot-welded with the bonding section. Welding flange has a stud aperture receiving the first stud. Stepped bracket comprises a first plate overlying the welding flange and a second plate overlying the trim panel. First plate has a first aperture receiving the first stud. Second plate has a second aperture receiving the second stud. Studs have respective re-melted heads clamping the bracket in place.
EFFECT: improved reliability.
13 cl, 6 dwg
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