Patent ID: 7585248
Filing Date: 2009-09-08
Classification: B60N,Y10T

Abstract:
1. A hinge mounting for an adjustment device of a motor vehicle seat comprising: a first external gear wheel defining a first inner toothed surface; a second external gear wheel defining a second inner toothed surface and being rotatable and adjustable about a hinge axis relative to the first inner toothed surface; at least two planet wheels, each meshing with both the first inner toothed surface and the second inner toothed surface and being disposed for free rotation about a planet wheel axis; and a driving sun wheel that comprises a toothed surface and meshes with the at least two planet wheels, wherein at least one of: (1) at least one of the planet wheels comprises a ring-shaped spring or is formed from a ring-shaped spring, the ring-shaped spring forms at least partially the toothed surface of the planet wheel, is configured to be radially elastically deformable and designed in such a manner that the ring-shaped spring permanently exerts a force both onto the sun wheel and onto the first inner toothed surface and onto the second inner toothed surface, and (2) the sun wheel comprises a ring-shaped spring, the ring-shaped spring forms at least a portion of the toothed surface of the sun wheel, is configured to be radially elastically deformable and designed such that the ring-shaped spring permanently exerts a force onto the planet wheels and biases these with force into abutment with the first inner toothed surface and the second inner toothed surface; wherein at least one of: (1) the ring-shaped spring of the sun wheel has a diameter corresponding to the diameter of an inner circle about the hinge axis, the inner circle being tangent or intersecting dedendum circles of the planet wheels and (2) the ring-shaped spring of at least one of the planet wheels has a diameter that is equal to or slightly greater than the difference between the diameters of the dedendum circle of the sun wheel and of the dedendum circles of the inner toothed surfaces.