A seat cushion structure of chair is provided, in which a seat cushion body has a chamber provided on its upper end surface. The chamber has holders provided on its two opposite walls, and a plurality of spring steel wires have their two ends fixed on the holders provided on the opposite walls of the chamber so as to span across the chamber. An elastic pad covers correspondingly the upper end surface of the seat cushion body in such a manner that user, when sits on the elastic pad, enjoys comfortable and elastic feeling by the support of the elastic pad and the spring steel wires provided under the elastic pad. Furthermore, user's body heat can be dissipated through perforations provided on the elastic pad to the chamber of the seat cushion and thus to the outside, so as to enhance user's comfort.

A seat cushion structure of chair is provided, in which a seat cushion body has a chamber provided on its upper end surface. The chamber has holders provided on its two opposite walls, and a plurality of spring steel wires have their two ends fixed on the holders provided on the opposite walls of the chamber so as to span across the chamber. An elastic pad covers correspondingly the upper end surface of the seat cushion body in such a manner that user, when sits on the elastic pad, enjoys comfortable and elastic feeling by the support of the elastic pad and the spring steel wires provided under the elastic pad. Furthermore, user's body heat can be dissipated through perforations provided on the elastic pad to the chamber of the seat cushion and thus to the outside, so as to enhance user's comfort.

A mattress assembly generally includes a tension adjustable and stretchable fabric panel coupled to a rail system. Axial tension of the stretchable fabric panel can be adjusted to change a firmness property associated with the mattress assembly.

A mattress assembly generally includes a tension adjustable and stretchable fabric panel coupled to a rail system. Axial tension of the stretchable fabric panel can be adjusted to change a firmness property associated with the mattress assembly.

It is of interest to be able to adjust the upholstery firmness of furniture for sitting and lying on as individually as possible, in particular with a view to being able to use the furniture for a long time. In addition, there is a need for a design which allows firmness adjustment to be integrated and which can be realized as flexibly as possible for different furniture or seat variants. The invention provides an upholstered-furniture arrangement (100) which has a basic frame (7) and an upholstered cushion (6) on which someone can sit or lie, which is fixed to the basic frame at least in the edge region thereof and which has a panel (4) beneath it for upholstery-firmness adjustment, the panel being arranged in the basic frame (7) such that the height of the panel can be adjusted by pivoting the panel, wherein the end of the panel (4) located opposite a pivot shaft (14) is arranged freely in the basic frame (7), and a height-adjustment device acts on the panel (4) from beneath by applying an adjustable compressive/prestressing force (F), the height-adjustment device being supported in the downward direction by the basic frame, counter to the compressive/prestressing force. This arrangement has an attractive, direct technical effect and offers a good compromise between cost and benefit.

It is of interest to be able to adjust the upholstery firmness of furniture for sitting and lying on as individually as possible, in particular with a view to being able to use the furniture for a long time. In addition, there is a need for a design which allows firmness adjustment to be integrated and which can be realized as flexibly as possible for different furniture or seat variants. The invention provides an upholstered-furniture arrangement (100) which has a basic frame (7) and an upholstered cushion (6) on which someone can sit or lie, which is fixed to the basic frame at least in the edge region thereof and which has a panel (4) beneath it for upholstery-firmness adjustment, the panel being arranged in the basic frame (7) such that the height of the panel can be adjusted by pivoting the panel, wherein the end of the panel (4) located opposite a pivot shaft (14) is arranged freely in the basic frame (7), and a height-adjustment device acts on the panel (4) from beneath by applying an adjustable compressive/prestressing force (F), the height-adjustment device being supported in the downward direction by the basic frame, counter to the compressive/prestressing force. This arrangement has an attractive, direct technical effect and offers a good compromise between cost and benefit.