Patent ID: 8408654
Filing Date: 2013-04-02
Classification: B23P,B60N,Y10T

Abstract:
1. A vehicle seat frame assembly, comprising: a side bracket having at least one aperture extending therethrough, the aperture having a diameter in a radial direction of the aperture and a longitudinal length in a longitudinal direction, the longitudinal length of the aperture equaling a thickness of the side bracket in the longitudinal direction, the radial direction being perpendicular to the longitudinal direction; a floor bracket indirectly coupled to the side bracket; a linkage configured to pivotably couple the side bracket to the floor bracket, wherein the linkage comprises an aperture; a torsion tube extendable through the aperture of the side bracket and extendable through the aperture of the linkage, wherein the torsion tube includes a head portion at an end of the torsion tube and a shank portion in a middle of the torsion tube; and a bushing radially aligned between the torsion tube and the aperture of the side bracket such that an inner surface of the bushing directly abuts an outer diameter of the torsion tube and an outer surface of the bushing directly abuts an inner circumferential surface of the aperture of the side bracket; wherein the torsion tube and the bushing are fitted onto the side bracket through an internal swaging procedure; wherein the torsion tube comprises a first inner diameter at the head portion and a second inner diameter at the shank portion, the first inner diameter being larger than the second inner diameter; and wherein the first inner diameter of the torsion tube is constant along a longitudinal portion of the torsion tube in the longitudinal direction, the longitudinal portion of the torsion tube extending in the longitudinal direction through the aperture of the side bracket along the entire longitudinal length of the aperture of the side bracket.