Support element for a cushion cover for seating and lying areas

Support element for a cushion cover for seating and lying areas, comprising a base plate that can be fixed to a base, and at least one spring element formed by a plurality of spring arms and extending upward from the base plate in the direction of the cushion cover, wherein the spring arms each are provided with a substantially U-shaped corrugated spring element on the upper ends thereof, oriented away from the base plate, the corrugated spring element comprising at least two parallel spaced spring legs located on concentric ring tracks and disposed about the central axis of the support element and at least one connecting bar joining the spring legs, one end of the spring leg located on the inner ring track being connected to the corresponding spring arm, and one end of the spring leg located on the outer ring track being connected to a support plate provided for supporting the cushion element, wherein the degree of hardness of the support plate can be changed by way of a support body rotatable about the central axis of the spring element wherein the support plate comprises a ring-shaped frame part connecting the upper ends of the spring legs of the corrugated spring elements and a support disc rotatable about the central axis of the support element in the frame part, wherein the support disc is provided in the outer edge region thereof with an adjusting device for limiting the movement of the spring legs and of the corrugated spring elements.