A seat element includes a carrier frame and supporting surfaces. The carrier frame includes at least one left-hand side member and a right-hand side member. The supporting surfaces are designed in the form of a seat surface and backrest surface. At least one of the supporting surfaces includes a covering element. The covering element includes a fabric and is stretch-mounted, on the left-hand side member and on the right-hand side member of the carrying frame. The covering element includes tension elements. The tension elements are subjected to pulling action by means of in each case at least one of the actuators in such a manner that a level of tensioning to which the fabric of the covering element is subjected when the actuator has been activated is greater than a level of tensioning to which the fabric of the covering element is subjected when the actuator has been deactivated.
1 . A seat element comprising:
a carrier frame,
one or more actuators, and
supporting surfaces,
wherein the carrier frame comprises at least one left-hand side member and a right-hand side member,
wherein the supporting surfaces comprise a seat surface and/or a backrest surface,
wherein at least one supporting surface of the supporting surfaces comprises a covering element,
wherein the covering element comprises a fabric and is stretch-mounted on the at least one left-hand side member and on the right-hand side member of the carrier frame,
wherein the covering element comprises tension elements,
wherein each tension element of the tension elements is subjected to pulling action by at least one actuator of the one or more actuators such that a level of tensioning to which the fabric of the covering element is subjected when the at least one actuator has been activated is greater than a level of tensioning to which the fabric of the covering element is subjected when the at least one actuator has been deactivated,
wherein at least one tension element of the tension elements is arranged on a front surface of the covering element and the at least one actuator acts on a rear surface of the covering element, the rear surface being located opposite the front surface, in order to subject the at least one tension element to the pulling action,
wherein the at least one actuator and the at least one tension element are connected to one another through the covering element, and
wherein the at least one tension element comprises at least one fastening point that engages through the covering element.
2 . The seat element according to claim 1 , wherein the fabric of the covering element comprises at least one weft thread and warp threads, wherein the at least one weft thread runs in a central region of the covering element in a direction transverse to the warp threads.
3 . The seat element according to claim 1 , wherein the fabric of the covering element includes a looped-stitch structure made of yarns, by loops of thread being interlaced, and wherein looped stitches, of the looped-stitch structure, are formed in a row one after another, in the form of knitted looped stitches.
4 . The seat element according to claim 1 , wherein, in a region of the fabric, the covering element comprises different fabric densities, including looped-stitch sizes or thread spacings.
5 . The seat element according to claim 1 , wherein the tension elements are connected to the covering element in such a manner that each of the tension elements is retained in a non-displaceable manner on the covering element.
6 . The seat element according to claim 1 , wherein the at least one tension element is incorporated in a mount formed on the front surface.
7 . The seat element according to claim 1 , wherein the at least one tension element is introduced within the covering element, and is incorporated in a structure of the covering element, and wherein the fastening point is configured to pass out of the covering element.
8 . The seat element according to claim 1 , wherein, at least one mount is formed by at least one pocket on the covering element, and wherein the at least one tension element is incorporated in the at least one mount or is fastened on the at least one mount.
9 . The seat element according to claim 1 , wherein the at least one actuator comprises a tensioning body, and wherein the covering element is connected to the tensioning body via the at least one tension element and a force-transmission element including a tensioning slide and/or deflecting element and/or hydraulic element and/or pneumatic element.
10 . The seat element according to claim 1 , wherein deformation of the at least one supporting surface takes place by the covering element being tensioned by virtue of the at least one tension element being subjected to a pulling force by the at least one actuator, the pulling force running in a direction of a plane defined by the covering element.
11 . The seat element according to claim 1 , wherein a plurality of zones are formed by one or more tension elements of the tension elements and/or a plurality of covering elements, and wherein the one or more tension elements are arranged in different ways on the plurality of covering elements.
12 . The seat element according to claim 1 , wherein:
the seat element comprises a base,
the carrier frame is connected to the base, and
a first end of one actuator of the one or more actuators is connected to one tension element of the tension elements such that a second end of the one actuator is connected to the base or the carrier frame.
13 . The seat element according to claim 12 , wherein the one tension element is connected to the base by the one actuator such that, by way of a longitudinal axis of the one actuator, the one actuator encloses an angle of at least 30° in relation to a particular supporting surface, which is adjacent to the one tension element.
14 . The seat element according to claim 12 , wherein at least one arcuate tension element is arranged in a transition region of the supporting surfaces, wherein the transition region of the supporting surfaces extends, in the form of a carrying surface, from the backrest surface into the seat surface, and wherein the arcuate tension element is connected to the base by at least one actuator of the one or more actuators such that the arcuate tension element is braced away in a rearward direction from a front edge of the seat surface and is braced away in a downward direction from an upper edge of the backrest surface.
15 . The seat element according to claim 1 , wherein a tensile force of the at least one actuator is adjusted either manually or by motor, and wherein a plurality of actuators of the one or more actuators are jointly adjustable.
16 . The seat element according to claim 1 , wherein the at least one tension element includes a rectilinear structure, curved structure, a Y-type structure, an annular structure, or a polygonal structure, and wherein the at least one tension element is elastically deformable, is rigid, or is partially rigid and partially elastic in end regions.
17 . The seat element according to claim 1 , wherein the at least one tension element is connected to the at least one actuator exclusively in a central region of the at least one tension element.
18 . The seat element according to claim 1 , wherein at least one of:
the carrier frame comprises at least one upper bracket, which connects the at least one left-hand side member and the right-hand side member behind the backrest surface and runs at a distance from the backrest surface,
the carrier frame comprises at least one lower bracket, which connects the at least one left-hand side member and the right-hand side member beneath the seat surface and runs at a distance from the seat surface, or
the carrier frame comprises a central bracket, which connects the at least one left-hand side member and the right-hand side member in a transition region of the supporting surfaces, the seat surface and the backrest surface merging into one another in the transition region, and the central bracket runs at a distance from the seat surface and at a distance from the backrest surface.