Browse Publications Technical Papers 2001-01-0324

All Thermoplastic Lightweight Structural Rear-Seat-Back 2001-01-0324

An innovative seat back design for fold down split-rear seat backs has been developed for application in SUV’s, MPV’s and hatchbacks. The all-thermoplastic seat back design meets US and European government regulations such as, the FMVSS 210, 207 in the US, and ECE 17 (luggage retention) in Europe. It is also expected to meet the newly introduced FMVSS 225 (child seat belt tether load) requirement.
Currently application of the blow molded seat back is limited to sedans where the seat belt anchor loads are transmitted to a steel package shelf. For applications where the seat-belt anchor loads are transmitted to the seat back, hefty steel frame and reinforcements are required which add weight and cost to the seat back. The same is true for seats that need to comply with the European luggage retention requirement.
This newly developed thermoplastic seat back solution meets the above mentioned requirements along with delivering significant cost and weight savings as compared to the traditional steel designs. The paper presents the design details, analytical prove out of the design, economic, and manufacturing considerations.


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