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Automotive Interior Door Handle
A company was using a Semi-Tubular Rivet as a hinge pin in an automotive door handle application. Their installation process consisted of installing the Rivet used to join the bracket to the handle assembly, and then clinching/peening the end opposite the head of the Rivet in a secondary operation to secure the part in place. The Rivet rotates freely while the handle is cycled. However, since it is only retained by the opposing heads on either end of the part, the Rivet is also quite loose in both the bracket and the housing which can result in rattling. A third operation of greasing was required to improve the overall BSR (buzz, squeak and rattle) caused by the free fit condition of the Rivet in the assembly. A short term fix consisted of staking the Rivet tighter to the assembly, however this caused excessive cracking of the plastic and larger long term quality concerns. The customer approached SPIROL for a recommendation for a hinge pin that would eliminate the BSR problems, improve plant productivity and possibly provide a savings for the overall cost of the assembly.