EP1327401A2 - Tiltable seat assembly - Google Patents

Abstract

The chair has a seat back, a seat surface and a supporting frame element with rolling surface(s) on which a rolling element sits. The seat surface and back can pivot relative to the frame element and roll when the rolling component rolls relative to the rolling surface. The rolling component is rigidly attached to a bearer to which the seat surface is attached. The bearer tilts relative to the rolling surface when the seat surface and back tilt. The arrangement has a seat back (11), a seat surface (10) and a supporting frame element (3) with at least one rolling surface (5) on which a rolling element (6) sits, whereby the seat surface and back are pivotable relative to the frame element and perform a rolling movement when the rolling component rolls with respect to the rolling surface. The rolling component is rigidly attached to a bearer (8) to which the seat surface is attached and the bearer tilts relative to the rolling surface when the seat surface and back are tilted.

Description

The invention relates to a swiveling seat arrangement with a backrest, which by simple body pressure changes the Angle of the backrest. Such seating arrangements are particularly suitable as office chairs, but can also as system seating, for example as equipment for waiting rooms and other public spaces, in different modes of transportation, like buses, trains or planes, or as leisure furniture, like TV armchairs or garden chairs.

Especially where there is strain from prolonged sitting it is important to change your seating position frequently to make, being adjustable or pivotable in the case Seating furniture to take ergonomic and physiological requirements into account are. Also for other uses of modern seating presence is often a factor for comfortable sitting comfortable adjustment options for the seating. This usually go by simply tilting the seating arrangement out. Often there are coordinated movements important functional components of seating arrangements, in particular supporting components such as backrest, seat and / or Realize headrest, partly through sheer body pressure. In many cases this is a complex synchronous mechanism required to mechanically move each component to couple with each other. Such synchronous mechanisms are expensive to manufacture and, moreover, are often prone to wear and sometimes quite noisy if one Adjustment or swiveling of the seating position takes place.

Another problem with swiveling or adjustable seat arrangements is often an increase in the instability of the Seating arrangement with increasing exhibition of the swiveling Components, d. H. it is with increasing panning increasing effort is required to return to the starting position. Therefore mechanical elements must be provided that in the case of issuance generate restoring forces that are common additionally adapted to the body weight of the person sitting Need to become. This adaptability represents an additional mechanical Effort that continues such a synchronous mechanism expensive.

The complicated structure of a conventional synchronous mechanism often prevents the simple exchange of individual components the seating arrangement, e.g. B. the exchange of seat or back. In particular, the difficult to solve connection with a any existing base is often seen as a nuisance.

For longer sedentary work, there is an optimized support function components of one another arranged in a coordinated manner Seating arrangement is often not sufficient due to the lack of stress bodily harm may occur in the long term. Also with optimal support of the body, symptoms appear that only through an active dynamic component of swiveling seat arrangements can be avoided. The to be provided for this provide additional mechanical, possibly elastic components a further increase in the design effort of the concerned Synchronous mechanism represents what is particularly with cheaper Seating is a significant disadvantage.

Another common problem with adjustable seating arrangements is that with a swiveling of the backrest in a rearward position usually increases the distance between the torso and a reference point, for example a computer keyboard. With larger swivel angles it can come so far that by then it is easy to handling objects in a workplace suddenly outside the range, but at least outside an area, in which convenient handling is possible. This will a change in the position of the entire seating arrangement Moving is necessary, which is particularly the case with heavy office chairs or seating furniture without a mobile undercarriage a considerable one Represents discomfort.

Another problem with conventional swivel seat assemblies consists in shifting the focus during the Verstellens. There will be a swiveling backrest in the back Positioned, so at least the Upper body of the seated person also in a rearward position, resulting in a horizontal shift in its center of gravity leads. In spite of this sometimes considerable shift of the Center of gravity in any state of pivoting a stable To ensure the position of the seating furniture, the seating arrangement must be either fixed in space or with large and / or heavy ones Foot constructions are provided.

From DE 38 00 754 C2 is a seat for an office chair with a adjustable seat and backrest by shifting body weight known. The seat and back part can be relative to one Frame pivoted like a swing around a fixed swivel axis become.

The conventional seat arrangement according to DE 38 00 754 C2 with the has fixed swivel axis in terms of stability and the seating comfort the following disadvantages. With the conventional Panning arrangement is realized, the movement sequence corresponds to a children's swing (swing principle). When the seated person leans forward, the seat part moves to the rear, so that the person is, for example, one To reach the desk, must tilt further forward. This shifts the focus away from the front Pivot axis. In this situation, the seated person must support with your legs to avoid tipping forward. With the reverse procedure, there is a risk of tipping over rear. An additional disadvantage is that the person for the opposite movement in the non-pivoted state Get momentum or give yourself a "jerk". For pivoting a strong body shift is necessary.

Further disadvantages arise from the complicated mechanical Construction. Pins or gears that run in slots have an undesirable high mechanical resistance. In the course of use, for example, it occurs due to material deformation or contaminants to an undesirable Jamming or squeaking.

The object of the invention is to provide an improved seating arrangement specify the disadvantages of conventional swivel Seating arrangements can be overcome and in particular a stable Sit with and regardless of the body weight of the person sitting synchronized movement of seat and backrest with little effort allows. The seating arrangement is also intended to be one Reliable and maintenance-free construction even with prolonged use have. The object of the invention is also with such improved seating arrangements and equipped seating Specify applications of the seating arrangement.

This task is accomplished by a seating arrangement with the features solved according to claim 1. Advantageous embodiments and applications the invention result from the dependent claims.

An important feature of the invention is that a pivotable seat arrangement at least one mechanical component contains a rolling motion on a supporting frame element can execute. By designing the area on the load-bearing frame element on which the rolling movement takes place and / or the surface of the rolling component, which with the supporting frame element comes into contact, an adjustment can be made the rolling characteristics to different requirements realize in swiveling seat arrangements. This rolling characteristic largely determines the adjustment behavior of the seating arrangement. The supporting frame element is designed so that it the adjustment possibilities of the seat arrangement are not limited and does not affect seating comfort.

According to the invention, in particular, to achieve the stated object proposed a generic seating arrangement in this regard continue to develop that at least one rolling component are rigidly connected to a carrier, on the turn the seat is attached, whereby when pivoting the seat the carrier relative to the at least one rolling surface is pivoted.

With the arrangement of the seat, if necessary, with a vertical distance of the rolling surfaces conveyed by the wearer realizes a fundamentally changed pivoting principle according to the invention, in contrast to the conventional swing principle (fixed swivel axis) has a sequence of movements like a cradle, where the current swivel axis during the swivel movement in the same direction as the center of gravity of the seated Person moves (cradle principle). So you sit with wide deflections to the front or back more stable than with conventional swing principle with a fixed swivel axis.

Another important feature of the invention is that a backrest is connected to the rolling component, which is pivoted by the roll angle in the event of roll. A rigidly connected to the rolling component Carrier to which a seat is attached. The carrier between the rolling component and the seat surface ensures that depending on its length during the rolling motion in addition to the change in angle the carrier position a horizontal shift the position of the seat. This horizontal shift The greater the distance, the greater the seating position between the seat and the rolling surface. The rolling The component forms a seesaw, the movement of which swivels the backrest and a horizontal shift the seat, combined with a slight increase or Lowering the seat, is connected.

Advantages with regard to the structure of the seat arrangement can arise result when two rolling surfaces and two associated rolling surfaces Components are provided.

The term "rolling component" refers expressly also on each in the movable part of a pivotable Seat arrangement integrated surface, the rolling movement according to the invention allows. The term carrier includes each stable connection between the seat and the rolling Component sufficient to support the weight of a seated person to be transferred to the rolling surface. With "pivotability" the seating arrangement according to the invention denotes the ability that the position and orientation especially of the backrest and the seat of the user, especially a seated Person by shifting weight or by pushing off with the legs or arms are changed. It’s both a pretense, d. H. a move to a changed position and fixation in this, as well as panning, d. H. a dynamic Behavior includes.

Simply by the geometry of those that come into contact when rolling Areas and their location in relation to the center of gravity the seating arrangement under load can already be sufficient Stability of the seating arrangement is ensured in every position become. If the rolling surface, i.e. the load-bearing frame element, well below or at the same height relative to the center of gravity of the movable part of the seat assembly, for example a straight rolling surface the center of curvature of the rolling Adjust the surface of the rollable component so that he clearly above the center of gravity of the movable part of the seat assembly lies, which leads to self-stabilization similar to that Principle of a "standing man" leads.

If a more curved rolling surface is used, i.e. the The center of curvature is set lower, so the stability decreases from what an active-dynamic maintenance of the sitting position required and possibly desired for medical reasons is.

According to a preferred embodiment of the invention the supporting frame element has a flat rolling surface, while the rolling component has a curved surface, the Shape depending on the practical requirements for the seat and Swivel behavior and the stability of the seat equipment selected is. Alternatively, according to the invention, for additional stabilization be provided to make the rolling surface itself concave and through a possibly variable radius of curvature the rolling Guide component like in a bowl. The radius of curvature of the rolling component or the rolling surface can to be changed to the edges of each area to realize certain pivoting behavior. For example, it can be provided that the force required to the movable part of the seat assembly from a central position swing out, increases with increasing swivel angle. This is close to the middle position, that of an upright position Sitting position should correspond to active-dynamic sitting taken care of. In the back sitting position, in an active Maintaining the sitting position can lead to incorrect loads on the other hand, there is sufficient pressure on the backrest can be compensated, which enables a relaxed leaning.

A particularly advantageous embodiment is that load-bearing frame element or the rolling surface located thereon to be installed in a position that is above the center of gravity of the movable part of the seat assembly. In this case it follows that the connected to the rolling component Carrier of this can lead down to whatever is hanging position of the seat connected to this support provides. The seat thus forms together with the carrier and the rolling component a pendulum assembly, which without Presence of resetting mechanical components a stable Starting position.

The one connected to the swivel assembly via the rolling component Backrest leads to an additional influence the mechanical equilibrium. Because the influence of weight the backrest with an average load Seat arrangement is small, this remains on the situation the mechanical balance when used as intended the seating arrangement low. With a suitable choice of the curvature of the surfaces touching when rolling, the length of the carrier, on which the seat hangs, and positioning of the rolling surface in relation to the center of gravity, the size of the restoring torque can be if the pendulum assembly is deflected, that it’s about the same size as the reverse one Tilting moment caused by the leaning of the seated on the Backrest is created. Because both moments are linear from body weight of the seated, no weight-dependent restoring forces are required generated by additional mechanical components. The dimensioning of the moving parts and / or the shape and location of the rolling surface can be such that a possible accurate cancellation of the mutual torques takes place, too a pivoting of the seat arrangement due to very low pressure forces leads. This is indicated by a mere swiveling Body pressure is often perceived as very pleasant. The moveable However, parts of the seating arrangement can also be dimensioned in such a way that the opposing moments are not complete pick up, which causes the backrest to pivot a - albeit minor - but clearly noticeable Force must be applied.

A particularly advantageous embodiment with a high rolling surface is ideal for seating furniture that has armrests. There is a possibility inside both of these armrests Rolling surfaces on and on load-bearing frame elements to accommodate rolling mechanical components in the form of rockers, on which the seat hangs. That automatically offers the advantage of a relatively high position of the rolling surface, which only is limited by any relevant standards (DIN etc.), associated with a high stability through the pendulum effect and at the same time an effective use of the armrests anyway available space. The size of such Seating is hardly different from one without the pivotability shown.

Further advantageous configurations include a lockability the swiveling seat arrangement in every adjustment position. This can be done by positioning mechanical locking Components between the rolling surface and the rolling surface happen. These components have a high coefficient of friction on, even low pressure forces are sufficient to achieve an effective To achieve a wedge effect and an effective stop of the rolling motion to effect and thus a further pivoting prevent.

To be able to sit for a longer period for an active-dynamic component the surfaces that come into contact when rolling off can also be designed or positioned so that a small Restoring force generated in the area of maximum pivoting will be in positions near the starting position, however for instability of the system, for example due to a convex elevation of the rolling surface, is taken care of. That requires constant active maintenance of the standard seating position, however, allows pivoting at the same time in a clearly backward and stable sitting position when leaning, which are taken for occasional relaxation can. In this embodiment, too, the required Actuating forces are kept low.

Advantageously, the pivoting characteristic of the invention Seat arrangement by the design of the rolling Areas on the one hand and the rolling surfaces on the other hand become. In general, one or both of the surfaces mentioned depending on the desired swivel characteristics, convex or concave be educated. It can also be one of the surfaces mentioned and the other surface is convex.

The rolling component can be particularly advantageous and / or the supporting frame element with an interchangeable Roll surface to be provided. This can be done, for example, by a Exchange insert can be realized, which can be done in a few simple steps, z. B. with a bayonet or a Velcro can connect the respective part and which contains a surface, the respective requirements for the desired rolling characteristics is adjusted. So an application with a circular rolling surface quickly thanks to an insert with convex parabolic or hyperbolic rolling surface or through an insert that contains a rolling surface in which different troughs for fixing different swivel positions be replaced.

It is also advantageous on the rolling surface and / or the rolling component at at least one end of the respective Mechanical end stop. This can can advantageously be set by the user. In one or Both swivel directions can tip over with the end stop or overturning can be prevented. According to the invention, end stops be equipped with detachable locks to the To temporarily fix the seat in the swiveled state.

Due to the dependence of the rolling characteristics on the shape of the the pivoting characteristic is the components in contact with the rolling motion already by putting on the movable Part of the seat assembly on the supporting frame element with the given corresponding rolling surface. Connecting or the sequence of movements influencing elements are therefore possibly superfluous, resulting in a quick replacement of the moving parts the seating arrangement allows. This can be particularly important be when such seating arrangements as system seating are used, and a quick change of a large number of seats is required, for example when changing the color scheme of the furniture in public spaces.

In other configurations, however, it can be advantageous to use a Lifting the movable part of the seat assembly from the load-bearing Prevent frame element, especially in office chairs is the case that must be worn frequently. In this case it suffices to provide a lock in a manner known per se, which prevents that when lifting the seat assembly whose movable part detaches from the supporting frame element.

Another advantageous embodiment includes a geometric Optimizing the rolling surfaces also an additional Influencing the rolling characteristics through elastic or damping components. For example, by occupancy the rolling surface with a permanent plastic material Damping the pivoting movement can be realized. Thereby there is constant resistance even with optimized geometry against a swiveling of the sitting position, which leads to that on the one hand the sitting position is not too easy due to low Movements are blocked, but on the other hand not for everyone deliberate pivoting any existing lock released must become. At the same time, this embodiment has the advantage that almost the same positioning force for each swivel angle is required. With adequate design of the damping effect are already mentioned friction-increasing wedge elements unnecessary to fix the seating position.

Another advantage of seat arrangements according to the invention with over The rolling surface of the seat lies in that by the one with the pivoting movement as a pendulum movement The seat is moved horizontally. An enlargement the distance from the work surface (e.g. table) that of others swiveling seat arrangements with taking the rear Sitting position is avoided. Especially this compensation is effective when the rolling surface formed by rotatable rollers fastened in the supporting frame element becomes. The rolling movement of the rolling component takes place then as a pure rotation around the desired swivel angle, however without changing the horizontal position of the rolling Component. This version ensures maximum forward movement the position of the seat, otherwise the one addressed Advancement through with the direct rolling on change in the supporting frame element of the horizontal Position of the rolling component is superimposed.

Another advantage of storage on rollers is the low Shift of the center of gravity in the horizontal direction, what a high level of stability even with free-standing seating provides. Independent of the principle of the rolling movement according to the invention and the associated synchronization of a pivoting the backrest with a forward displacement of the seat it is appropriate to use either the supporting frame element and / or to design the rolling component so that during the rolling movement a lateral guidance of the rolling component given is. This can be done, for example, by one another coordinated running profiles of rolling surface and / or rolling surface will be realized. Due to the size and at the same time small It also stresses the contacting surfaces frequent pivoting in seat arrangements according to the invention very little wear. At the same time it is like that realized pivoting almost silently. By choice appropriate materials or corresponding coating of Moving parts with noise-reducing materials can Noise development can be reduced even further. Come for this especially felt or rubber coverings.

According to the seat with the rolling element connected. In general, a rigid connection can be provided be so that the seating arrangement when swiveled like a Rocking chair behaves. A modified configuration exists in movably connecting the seat to the carrier. at a pivoting becomes the horizontal and vertical position, but not predetermined the orientation of the seat. The alignment the seat is rather actively carried out by the person sitting, what to avoid incorrect strain in the lumbar region leads and an additional active-dynamic component forms. The flexible connection between the seat and the beam can advantageously be done by elastic connecting elements.

Since only for the functioning of the seat arrangement according to the invention the provision of one or more sufficiently solid Rolling surfaces are required on which the movable Roll assembly, the seating arrangement is also suitable for an installation without contact with the ground. Appropriate carriers on which the rolling surfaces are located or attached by changing systems can be, for example, directly on walls or other Support structures can be mounted, so no restriction there is ground clearance and still full Functionality can be used. The same applies to use in transportation.

Another possible application is the use of the invention Seating arrangements in so-called cantilever chairs. To is a known vibrating element with already described Roll surfaces provided according to the invention. The vibrating element thus becomes the supporting frame element in the sense of the invention. On the rolling surfaces, the movable assembly with the rolling Component placed. This way you get one Seating arrangement that the familiar and felt pleasant Vibration behavior with the pivoting options according to the invention connects, an embodiment that emphasizes one in particular encourages active, dynamic sitting.

The provision of the rolling surfaces can also be done quickly to be assembled frame element, for example, by Clamping devices or simply attaching them to a table top can be. The rolling surfaces are approximately in the Level of the table top, a seat shell as a movable assembly be put on with the corresponding rolling Components is equipped and forms a child seat that in the pivoting options according to the invention with the Table is connected. The same principle can be used with the corresponding Design of the assembly means and the frame element realize any place that is short term with a comfortable Seat equipment is to be provided.

The construction principle according to the invention advantageously enables easy adjustment of the seating arrangements various requirements resulting from the respective use result. By consistently dividing the used Assemblies in rigid and movable components, the rigid components through their connection to the load-bearing frame element are marked and the movement of all moving Components determined by the movement of the rolling component a particularly simple expandability can be added to other Realize constructive details, which makes them particularly versatile the seating arrangement leads. So it is easily possible other accessories that change with the seating position to be moved with, through more or less direct Connection with the rolling component, for example by mounting on the seat or the carrier already mentioned attach, which automatically results in a synchronized movement of these accessories. For this purpose, for example, are rigid or extendable footrests or specially equipped armrests or shelves. All this way to the mobile Parts of the seat arrangement to be assigned are also on a Way to assemble that, for example, by a simple Clamping device, its position with respect to a starting position Preset the rolling component or the seat leaves. This is especially true when attaching the backrest for a comfortable adaptation to different postures advantageous.

The seat arrangement according to the invention is particularly suitable for one Use with changing loads, d. H. a change between typical working postures, for example in the office, and typical sitting postures that are mainly used for relaxation (so-called power napping). Especially with relaxed postures one comes due to a lack of active maintenance of muscle tension physiological and as complete as possible support of the body, especially the spine, too. It is therefore particularly advantageous for the seat arrangement according to the invention to be equipped with backrests that optimally perform this function guarantee. Two parts have proven to be particularly advantageous Proved backrests with headrests that are divided that the headrest is firmly connected to an upper backrest area is that acts as a shoulder and neck support. Another lower backrest area is for supporting the lower back area, especially the lumbar area. At a Swiveling such backrests into a rearward position the angle between the two backrest areas is changed so that the movement of the upper backrest area pivots around corresponds to a virtual swivel axis clearly in front of the backrest. This ensures that the effective length the backrest according to an anatomical extension of the back changes in a curved posture. This extension is increased by increasing the distance between the realized both backrest parts in the area of the thoracic spine, which means minimizing the loss of support from the backrest, because there is a lack of support in this area of the back can be compensated particularly easily.

The relative movement of the two backrest parts advantageously takes place synchronized with the change of seating position, i.e. during the movement from an upright to a backward sitting position and vice versa. For this synchronization are known in Wise connecting means used between moving and rigid parts of the seat assembly. In the seat arrangement according to the invention stands for an attachment of a Synchronization mechanics on rigid parts practically the whole load-bearing frame element available.

Fig. 1:

eine schematische Seitenansicht der mechanischen Teile einer Ausführungsform einer erfindungsgemäßen Sitzanordnung als Bürostuhl, und

Fig. 2:

eine schematische Vorderansicht der mechanischen Teile einer Ausführungsform einer erfindungsgemäßen Sitzanordnung.

Further advantages and details of the invention are described below with reference to the accompanying drawings. Show it:

Fig. 1:

is a schematic side view of the mechanical parts of an embodiment of a seating arrangement according to the invention as an office chair, and

Fig. 2:

is a schematic front view of the mechanical parts of an embodiment of a seat arrangement according to the invention.

The invention is illustrated below with reference to a Embodiment with certain mechanical parts for implementation the rolling motion when pivoting the seat assembly explained without referring to the specifically described form of each Parts to be restricted. Rather, the invention can also realized with other forms of the supporting and / or moving parts be a rolling motion when pivoting the Allow seating arrangement. Details of seating arrangements that whose upholstery and covering are known per se not described below. Also known per se Parts especially of office chairs, such as. B. a synchronous mechanism, not described below.

Fig. 1 shows an office chair without covering and cladding. On a mobile foot 1 known per se is via a gas pressure spring 2 attached a supporting frame member 3, the fork-shaped to the level of the armrests (not shown here) and there is completed by two horizontal beams 4, the point essentially in the direction of the armrests. The tops this carrier is flat and forms the rolling surfaces 5 for the sequence of movements according to the invention. On each of these rolling surfaces is a rolling component 6, which on his Underside is limited by a convex surface 7, which on the rolling surface 5 of the supporting frame element 3 can roll. Attached to this rolling component 6 is a downward one leading carrier 8, on which a seat surface via connecting elements 9 10 is attached.

The connecting elements 9 are rigid, depending on the embodiment or formed elastic. Swiveled with rigid connecting elements 9 the seat 10 with the carrier 8. By elastic Connecting elements 9 is a pivoting of the seat surface 10 possible about a horizontal axis transverse to the seat direction. Likewise connected to the rolling component 6 is a simple one Backrest 11, the angle of which with respect to the rolling Component 6 can be preset with a clamping device 12 can. When the rolling component 6 rolls off a pivoting of the backrest 11 by exactly the roll angle. The carrier 8 is pivoted through the same angle which the seat 10 hangs. This leads to a horizontal shift the seat 10 with only a slight change in height the seat surface 10. Through the elastic connecting elements 9 it is possible to seat 10 regardless of the pivoting always keep in a horizontal position. The rolling motion can be done by positioning appropriate hard rubber rollers 13, 13 'between rolling surface 5 and rolling component 6 are inhibited, thereby fixing the respective Sitting position occurs.

The underside of the rolling component 6 has a curved one Surface that in cooperation with the preferred flat rolling surface 5 determines the pivoting behavior of the seat arrangement. The geometry of the component 6 is different Swivel features adjustable. For example, an asymmetrical Curvature can be provided, which is relative to the seat direction flatter at the front (with a larger radius of curvature) and towards the rear is steeper (with a narrower radius of curvature), where the radius of curvature from the center to the edge of the bottom can be changeable. Influencing the swivel movement by varying the shape of the rolling surface important advantage of the seating arrangement according to the invention The structure of the swivel mechanism is also considerably simpler than, for example, a chair with synchronous mechanism.

The seat assembly of the present invention has the following in use special advantage. Because the weight of a seated Person over the rigidly attached to the rolling components Lever-type carrier on the rolling components attacks, they perform a real rolling movement, whereby the point of contact between the rolling components and the rolling surface depending on the swivel direction on the rolling surface emotional. The current center of curvature moves accordingly of the rolling components through which the current Swivel axis runs. The pivot axis thus moving stays close to the center of gravity, making a more stable Sitting behavior and even a growing with increasing external steering Braking effect is achieved. The swivel movement is now automatically damped, there is no need for limiters. The sedentary people can with a self-stabilizing training the rolling components by simply picking up the feet automatically swing back from the floor to the horizontal position.

In the front view shown in Fig. 2 is particularly the Design of the supporting frame element 3 and the rolling surfaces 5 recognizable. Due to the fork shape of the frame element 3 comes there is no reduction in the space available on the chair. The flat rolling surfaces 5 are located approximately at the level of the armrests (not shown here). To ensure lateral guidance, the rolling components are designed so that they have a smooth surface 7 that roll on the rolling surface 5 can and on the outside next to the load-bearing Frame element 3 have an edge bead 14, which is a guide guaranteed along the rolling surface 5.

The seating arrangement according to the invention has the following others Benefits. The seating comfort is due to the increased stability significantly improved. Furthermore, the seat arrangement has one simple mechanical construction with symmetrical components, that can be produced with just one tool.

The in the above description, the drawings and the Features of the invention disclosed claims can be both individually as well as in any combination for the realization the invention in its various configurations of importance his.

Claims (18)

Swiveling seat arrangement with backrest (11), seat surface (10) and a supporting frame element (3), on which there is at least one rolling surface (5), on each of which a rolling component (6) rests, the seat surface (10) and the The backrest (11) can be pivoted relative to the supporting frame element and, when the at least one rolling component (6) is pivoted, perform a rolling movement on the at least one rolling surface (5), characterized in that a support (8) is rigid with the rolling component (6) is connected to which the seat surface (10) is fastened, and the support (8) is pivoted relative to the rolling surface (5) when the seat surface (10) and the backrest (11) are pivoted. Seat arrangement according to claim 1, characterized in that the at least one rolling surface (5) on the supporting frame element (3) is below or at the level of the plane of the seat surface (10). Seat arrangement according to claim 1, characterized in that the at least one rolling surface (5) on the supporting frame element (3) is located above the plane of the seat surface (10). Seat arrangement according to one of claims 1 to 3, characterized in that the at least one rolling surface (5) is flat or concave. Seat arrangement according to one of claims 1 to 3, characterized in that the rolling component (6) has an underside with a curved surface (7) facing the rolling surface (5) of the supporting frame element (3). Seat arrangement according to claim 5, characterized in that the surface of the underside has a curvature with a constant radius. Seat arrangement according to claim 5, characterized in that the radius of curvature of the surface of the underside varies from the center to the edges. Seat arrangement according to one of claims 1 to 7, characterized in that the at least one rolling surface and / or the at least one rolling component with different geometry are provided interchangeably. Seat arrangement according to one of claims 1 to 8, characterized in that the seat surface (10) is connected to the at least one rolling component via elastic connecting elements (9). Seat arrangement according to one of claims 1 to 8, characterized in that the supporting frame element (3) is located on the mobile underframe of an office chair or is a resilient part of a cantilever chair. Seat arrangement according to one of claims 1 to 8, characterized in that the supporting frame element (3) forms a freely placeable frame which can be fastened to predetermined fixed points by plugging on or by means of clamping devices. Seat arrangement according to one of claims 1 to 8, characterized in that the supporting frame element (3) is an integral part of system seating. Seat arrangement according to one of claims 1 to 12, characterized in that two rolling surfaces (5) and the rolling components (6) are located in the interior of armrests. Seat arrangement according to one of claims 1 to 13, characterized in that extendable footrests are attached to the seat surface (10). Seat arrangement according to one of claims 1 to 14, characterized in that the position of the backrest (11) can be preset. Seat arrangement according to one of claims 1 to 15, characterized in that a pivoting position of the seat surface (10) and the backrest (11) can be fixed by mechanical inhibition between the at least one rolling surface (5) and the at least one rolling component. Seat arrangement according to one of claims 1 to 16, characterized in that means for damping the rolling movement are present. Seat arrangement according to one of claims 1 to 17, characterized in that the at least one rolling surface (5) and / or the at least one rolling component (6) have a noise-reducing coating.

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