Patent ID: 6447066
Filing Date: 2002-09-10
Classification: B60N

Abstract:
An adjusting device for a double-jointed seatback using a single control, comprising:a seatback connected to a seat pan by a first joint for adjusting the seatback to various comfort positions; a second joint for folding the seatback down over the seat pan; a housing containing an upper locking plate having a toothed area to mesh with teeth of a first toothed sector connected with the seatback, and a lower locking plate having a toothed area to mesh with teeth of a second toothed sector connected to the seat pan; a double pivoting cam situated between the locking plates of the housing, secured to a transverse shaft parallel to the second joint, and connected to a single control means, the cam having supports for engaging opposed ramp surfaces of each locking plate to constitute a locking position, and the cam providing an unlocking position by urging the cam supports away from the ramp surfaces of each said locking plate enabling the locking plates to move away from the corresponding first and second toothed sectors, respectively; locking means associated with each of the first and second joints for selectively engaging at least one of the first and second toothed sectors with the corresponding toothed area of at least one said locking plate to fix a position of the seatback; and an unlocking control means to release the at least one of the first and second toothed sectors from the corresponding toothed area of at least one said locking plate it engaged with for fixing the position of the seatback, wherein the seat pan is joined on at least one side to the second toothed sector which is centered on the first joint that passes through the housing and the seatback is joined to two arms extending on either side of the upper locking plate of the housing and is articulated on the second joint having the first toothed sector centered thereon and mounted with the housing.