Patent ID: 6305748
Filing Date: 2001-10-23
Classification: B60N

Abstract:
A seat recliner comprising:a base;a first bracket fixed to said base, said first bracket defining internal teeth;a camshaft rotatably supported by said base and said first bracket, said camshaft having a first axis and a radially projecting cam portion;a second bracket moveable relative to said first bracket, said second bracket being disposed between said base and said first bracket, said second bracket defining external teeth meshable with the internal teeth and an opening receiving said cam portion;a positioning member cooperating with said cam portion to define a rotatable body fitted to the opening of said second bracket and bring a center axis of the rotatable body into a position eccentric to said first axis, said rotatable body causing displacement of intermeshing between the external teeth and the internal teeth upon rotation of said camshaft;two wedges disposed on said cam portion within the opening of said second bracket, said two wedges being adjacent to said positioning member in an axial direction of said camshaft and spaced from each other in a circumferential direction of said camshaft;a spring biasing said two wedges in opposed circumferential directions of said camshaft, said spring cooperating with said wedges to reduce a clearance between the external teeth and the internal teeth upon intermeshing;a bushing fixed to said base, said bushing supporting said camshaft; anda support holding said two wedges in a proper position relative to said cam portion of said camshaft, said support being disposed on said bushing and extending in a direction of said axis.