HEIGHT AND INCLINATION ADJUSTMENT FOR SEATS

摘要

A device for varying the vertical separation and relative inclination of two plate members, especially for the seat of an automotive vehicle, in which the two plate members have tandem pairs of bell crank levers pivotally interconnecting the plate members, the lower plate member having the pivot of the bell crank mounted thereon, and the upper plate member having the end of the one of the arms of the bell crank. The other arm of each bell crank of one of the tandem pairs is interconnected by an adjustment means which is secured to the first plate member. The adjustment means comprises a mechanism for effecting both relative closure and separation of the points of connection of the levers and the adjustment means can cause pivoting of the levers of a tandem pair relative to the lower plate member, whilst maintaining a fixed separation between the points of connection of the levers and adjustment means. Thus, one can raise and lower the upper plate member on which the seat surface is mounted and/or cause tilting of the upper plate member.