The present invention discloses an adjusting mechanism for a support structure of a seat of a vehicle comprising a first rotatable adjusting means 10 and at least one engaging means 30 displaceable by means of the rotation of the first adjusting means 10 f...

A spring plate (24) with toothing (26) and a fixed counter element (28) with counter toothing (30) are either fastened to backrest or seat plate. The plate toothing meshes tolerance-free with the element toothing, when in normal locking position. The sprin...