Patent ID: 6520307
Filing Date: 2003-02-18
Classification: B60N,F16H,Y10T

Abstract:
An adjusting device for a vehicle seat with a silent ratchet, the silent ratchet including a first ratchet portion and a second ratchet portion, the first ratchet portion having an inner lining and an axis of the inner lining, which inner lining is rotationally symmetrical to the axis of the inner lining, the second ratchet portion arranged so as to oppose the first ratchet portion and to be capable of rotating about the axis of the inner lining and which second ratchet portion carries at least one clamping lever, the clamping lever being capable of pivoting about an axis of the clamping lever, the clamping lever having a clamping area located in the neighborhood of the inner lining, the adjusting device further comprising an actuating device for the clamping lever, the clamping lever being pivotable under the action of the actuating device in a controlled manner between a normal clamping position in which the clamping lever is frictionally engaged with the inner lining, so that a non rotatable connection of the first ratchet portion and the second ratchet portion is provided, and a release position, in which the clamping area is located at a distance from the inner lining,the improvement comprising a continuous clamping groove arranged on the inner lining, the clamping groove having two lateral continuous clamping surfaces, wherein the clamping area has an engaging part adapted to said clamping groove, said engaging part having two sloping clamping sides, each of the two sloping clamping sides cooperating with one of the two clamping surfaces, and wherein a distance of the axis of the clamping lever from a clamping point in which the clamping lever contacts the inner lining is at least 1.4 times greater than a distance between the axis of the clamping lever and the inner lining.