Adjusting device for a vehicle seat with a silent ratchet having a first ratchet portion and a second ratchet portion

摘要

The invention relates to an adjusting device for a vehicle seat with a silent ratchet. The silent ratched includes a first ratchet portion and a second ratchet portion. The first ratchet portion has an inner lining which is defined by a rotating body. The second ratchet portion is a) arranged so as to oppose the first ratchet portion and to be capable of rotating about an axis of the inner lining and b) which carries at least one clamping lever capable of pivoting about an axis of the clamping lever. The clamping lever has a clamping area located in a neighborhood of the inner lining. An actuating device for the clamping lever being provided so that the clamping lever may be pivoted in a controlled manner between a normal clamping position in which the lever is frictionally engaged with the inner lining, a non rotatable connection of the two ratchet portions being provided thereby, and a release position, in which the clamping area is located at a distance from the inner lining. The inner lining is provided with a surrounding clamping groove (54) or clamping ridge having two lateral surrounding clamping surfaces The clamping area is designed as an engaging part or as a covering part adapted to said clamping groove or clamping ridge, said engaging part or covering part having two sloping clamping sides, each cooperating with one clamping surface.