EP3212040B1 - Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon - Google Patents

Description

The present invention relates to an office, work and leisure chair, which offers a significantly improved seating comfort, especially for persistent periods of sitting by stimulating the person sitting on it by means of functional and user-defined pneumatically activated mechanism to passively triggered, subliminal movements. On the other hand, the invention also relates to a retrofit kit for mounting on an existing chair or on any seat pad or surface, for generating subliminal movements of the person sitting thereon.

In view of the fact that sitting is a relatively modern phenomenon for humans, especially for working people, and that in principle only with the advent of the service society and the introduction of computers has a widespread effect, sitting as a posture becomes more important and effective due to the very high number of people who spend their working days sitting today, according to the public health. In Germany, a total of 4 billion chairs are counted on the approx. 80 million inhabitants, which means that there are approx. 50 chairs per inhabitant. The chair as a product therefore proves to be an important object familiar to every human being, and justified solely by its very exceptional use, it should provide maximum comfort and support for well-being and physical health.

A scientific study published in the American Journal of Physiology at the University of Tel Aviv shows that the human body applies more and faster fat at those sites where pressure and / or traction is regularly applied. Adipocytes (fat cells) were subjected to mechanical stress in laboratory tests, for example to simulate long sitting. High-tech microscopy was used to investigate how the adipocytes change with mechanical pressure. The lipid droplets clumped, became larger and more rigid. It may be concluded that the static pressure during long sitting promotes the accumulation of fat on the buttocks and thighs. In contrast, the adipocytes were reduced in size by cyclic stretching.

The state of the art covers a variety of chair and especially office, work and leisure chair constructions, all of which seek to optimize seating comfort while allowing for healthy sitting. The typical office, work and leisure chair has a foot well with a plurality of legs projecting from the support radially star-shaped or a horizontal ring on which are mounted on an additional vertical axis rotatable rollers, so that the chair in principle roll in all directions leaves. Next, the typical office, work and leisure chair on a stable seat, which is rotatably mounted about a vertical axis on the chassis and is adjustable in height, which is stationary in itself. The buttocks and the back of the seated person are hardly moved on such a chair, which is detrimental to the circulation and not least the well-being. The office chairs are also equipped with backrests, and often also with armrests. The controls for the adjustment of the seat height, the steepness of the backrests, the height of the armrests, etc. are usually all under the seat and the corresponding levers are not visible when sitting on the chair.

For example, a more ergonomic office, work and leisure chair model is available in DE 10 2005 033 052 A1 disclosed. It shows a chair whose seat is located on a tilting device. This tilting device is associated with a locking device in the form of a ring-tube air cushion, such that the tilt angle of the tilting movements can be adjusted via the air cushion. One possible embodiment relates to several air cushions, which for the purpose of limiting or deactivating the tilting movements are individually aufpumpbar. By means of a hand lever mounted below the seat, the seated person can inflate the air cushion via an air pump, or let the air contained in it escape via a vent valve also below the seat.

The like is from a therapeutic seating device US 2008/0079301 A1 known. Shown is a device for increasing the perception of body movements and health, especially for people with neuromuscular diseases, such as cerebral palsy or scoliosis. The methodology of this system is similar to that of [0005] designed with a support structure, a motion control unit and a seat pad. By the device structure two perpendicular axes are given, around which the seat pad is rotatably mounted. In order to dampen these movements, in turn, a device for damping is given, which consists of an annular, inflatable element. The air volume contained in it can be regulated by a pump and a drain valve below the seat cushion. However, the subject device here shows a very complex structure with a variety of items for the realization of variably damped tilting movements of the person sitting on the chair.

Furthermore, a device is off WO 2007/105960 A1 the disclosure of which discloses a seat device with a centrally mounted seat pad. This seat support is underlaid either two or four to the central storage mutually opposite or orthogonal arranged air cushion, which are interconnected, such that air is interchangeable between them for a definable along the axes of rotation damping setting.

The DE 35 13 985 A1 describes a chair with a seat supported by counter-springs which is tiltable about a pivot point located in the middle seating area in a plurality of vertical planes. The thus enabled tumbling motion of the seat should serve to strengthen the back muscles.

From the FR 1 305 406 A is a spring-damped seat cushion known. A seat rests on a plurality of springs, which are arranged concentrically around respective screw connections, by means of which the seat support are connected to a seat frame.

The aforementioned documents essentially represent the state of the art regarding the realization of mobility during sitting. In summary, a person can perform on such a seat device about two axes superimposed tilting movements, which are damped by air cushions. In this case, the person concerned can manually regulate the air volume or the pressure via a pump or a valve, which is below the Seat cover are actuated. De facto, these solutions do not lead to a satisfactory seating behavior. Numerous studies prove that people sitting for a long time are extremely sluggish and hardly ever change their seat settings. Such a person will rather adjust the degree of damping of the disclosed in the previous documents air cushion once and get used to the appropriate degree of tilt. Already a short time after the person has sat down on the chair, their movement activity will noticeably decrease or be completely stopped. The body naturally seeks to avoid the tilting movements without this being directly conscious to the seated person. It is the inherent inertia of man that inhibits him from performing unnecessary movements. In addition, a person working in an office who works full-time in their office, work and leisure chairs will hardly be able to systematically make different settings. If she sits in a position she finds comfortable, she will not risk changing her position and moving into a more uncomfortable position. Moreover, such an idea does not occur in the face of her work. Even the largest range of variable Feinsteinstellung can not prevent this inaction, because the initiative is inevitably absent.

The object of the present invention is therefore to provide an office, work and leisure chair for stimulating subliminal movements, which, in order to achieve the goals of [0001] , in particular mechanical-biological stimulation, breaks new ground for long-term healthy sitting. The chair is designed to take sitting to a whole new level and lead away from inactive sitting to an inevitably dynamic, stimulating and blood circulation in the body vessels of the buttocks, back and thighs. The inactivity of the pelvic area, enforced by the currently available office chairs, is to be replaced by a natural and inevitably or inevitably adjusting pelvic movement to keep the entire musculature active in the buttocks and pelvis, as well as indirectly in the back area. This pelvic movement leads to a coupled movement (coupled motion) of the spine, acting on these torsional and bending forces, especially in the lumbar region.

The office, work and leisure chair is to induce the movements of the seated person by means of adaptive load-dependent kinematics subliminal inevitably, so that the seated person mostly or optionally aware of either consciously and thus is not affected in their concentration. The person should therefore inevitably constantly perform subliminal movements. The working concentration should be increased by the inevitably subliminally active sitting on the average mass. The induction of these subtle movements is therefore to be ensured by reliable means which do not fail in view of the work or other mental demands of the person concerned. The above-mentioned goals are thus to be ensured in the long term and sustainably.

Optionally, the office, work and leisure chair should correspond to an individualizable user profile whose setting options can actually and regularly be used. The office, work and leisure chair should be an indirectly active chair, and not a stationary structure, and yet it should largely, in some cases even complete, be autonomous from artificial energy sources and therefore be used everywhere.

This object is achieved by an office, work and leisure chair for generating subliminal movements of the person sitting on it, with a chassis with a cross and exposed castors, a gas spring support and resting interface plate as a support plate and mounted thereon base plate and her worn seat cover with seat and a backrest, characterized in that the seat support is supported wobble by resting on a cover plate on a plurality of spring elements, each from the center of the bottom plate radially, obliquely to the radial or spiral towards the periphery of the bottom plate are slidably mounted, which spring elements are mechanically, hydraulically, pneumatically or electrically displaceable in their position outwards or inwards, so that the Taumelweg the seat cushion and the damping of the tumbling motion can be varied.

Furthermore, the object is achieved by a retrofit kit for mounting or placing on the non-wobble seat of a conventional chair or any seat surface for generating subthreshold movements of the person sitting on the retrofit kit, characterized in that the retrofit kit has a wobble-mounted seat pad by sitting on a cover plate resting on a plurality of spring elements, depending from the center of a bottom plate radially or obliquely to the radial or helically in the direction towards the periphery of the bottom plate are slidably mounted, which spring elements mechanically, hydraulically, pneumatically or electrically in position outwardly or inwardly displaceable, so that the Taumelweg the seat cushion and the damping of the tumbling motion are variable ,

Further optional configurations of the office, work and leisure chair and the retrofit kit provide further important functions. For example, embodiments of this chair and the retrofit kit will be presented with reference to the drawings and their functions will be described and explained.

Fig. 1:

Eine Explosionszeichnung des Büro-, Arbeits- und Freizeitstuhls mit taumelfähiger Sitzfläche dank radial beweglicher Federelemente, mit seinen wesentlichen Bauelementen;

Fig. 2:

Die mechanische Einrichtung zur Sicherstellung der Taumelfähigkeit der Sitzfläche vergrössert dargestellt;

Fig. 3:

ein Federelement mit Rollen oben und unten für die Verschiebbarkeit und einem Luftbalg dazwischen zur Federung;

Fig. 4:

ein Federelement mit Rollen oben und unten für die Verschiebbarkeit und Blattfedern-Paketen zur Federung;

Fig. 5:

ein Federelement mit einer Verschiebeplatte, die auf einer elastisch federnden Elastomer-Rolle als Federung abrollt;

Fig. 6:

Den Büro-, Arbeits- und Freizeitstuhl mit Federelementen zwischen einer Boden- und einer Deckplatte, von vorne gesehen;

Fig. 7:

Den Büro-, Arbeits- und Freizeitstuhl in zusammengebautem Zustand, zusätzlich mit Armlehnen und Hebeln zur Betätigung der push-pull Kabel oder Bowdenzüge;

Fig. 8:

Eine Armlehne mit dem daran angebauten Hebel zur Betätigung des Bowdenzuges für die Betätigung der Quetschventile;

Fig. 9:

Den Hebel an der Armlehne mit Arretierung jeder Stellung des Bowdenzuges mittels federbelastetem Klemmplättchen;

Fig. 10:

Eine Variante zum Verstellen der Taumelcharakteristik durch Drehen der Sitzauflage;

Fig. 11:

Einen solchen Büro-, Arbeits- und Freizeitstuhl mit taumelfähiger Sitzfläche in Kombination mit einer Rückenlehne aus phoronomischen Elementen;

Fig. 12:

Die Rückenlehne und ihre phoronomischen Elementen von hinten gesehen;

Fig. 13:

Die Rückenlehne und ihre phoronomischen Elementen in einer besonders einfachen und wirkungsvollen Ausführung von schräg hinten gesehen.

It shows

Fig. 1:

An exploded view of the office, work and leisure chair with wobble seat thanks to radially movable spring elements, with its essential components;

Fig. 2:

The mechanical device for ensuring the tumble capacity of the seat shown enlarged;

3:

a spring element with rollers at the top and bottom for the displacement and an air bellows in between to the suspension;

4:

a spring element with roles above and below for the displacement and leaf spring packages for suspension;

Fig. 5:

a spring element with a sliding plate which rolls on an elastically resilient elastomer roller as a suspension;

Fig. 6:

The office, work and leisure chair with spring elements between a floor and a cover plate, seen from the front;

Fig. 7:

The office, work and leisure chair in assembled condition, in addition with armrests and levers to operate the push-pull cables or Bowden cables;

Fig. 8:

An armrest with the lever mounted thereon for actuating the Bowden cable for the operation of the pinch valves;

Fig. 9:

The lever on the armrest with locking of each position of the Bowden cable by means of spring-loaded clamping plate;

Fig. 10:

A variant for adjusting the Taumelcharakteristik by turning the seat cushion;

Fig. 11:

Such an office, work and leisure chair with a wobble seat in combination with a backrest of phoronomic elements;

Fig. 12:

The backrest and its phoronomic elements seen from behind;

Fig. 13:

The backrest and its phoronomic elements seen in a particularly simple and effective execution obliquely from behind.

Based on FIG. 1 The structure of this office, work and leisure chair opens up to create subliminal movements of the seated person, as shown here by means of an exploded view, which provides insight into the essential parts. At the bottom you can see a foot 1 and then a gas spring support 2, which is centrally located here, but can also be arranged laterally displaced, for example, at the very back, under the backrest 22 of the office, work and leisure chair to the area below the seat cushion 19 free to keep. Thanks to the gas spring, the gas spring support 2 is height adjustable in the traditional manner. The spider 1 may be formed by a star wheel with five or more arms, at the ends of each an unlocked roller 4 is mounted. In the example shown, the base 1 runs down into a circumferential ring 3, on which a number of freely steered rollers 4 are mounted. This ensures that the office, work and leisure chair can be rolled in all directions very easily and with minimal resistance. On top of the gas spring support 2 of the base 1, an interface plate 5 can be seen as a support plate for the rest of the structure of the chair, on which all the components for the tumble of the seat are constructed. Under this interface plate 5, a chair mechanism may be arranged so that the interface plate 5 on this chair mechanism forward and backward on the support 2 is displaceable. On top of the interface plate 5, the bottom plate 28 of a device 6 is placed for the realization of the tumble.

This device 6 consists of a bottom plate 28, in which in the example shown four radially extending grooves 11 are excluded, and a cover plate 27, in which vis-à-vis the grooves 11 in the bottom plate 28 also such grooves 11 are excluded. These grooves 11 are grooves for spring elements 7, which are movable on rollers within these grooves 11 against the inside, to the center of the bottom 28 and cover plate 27 and against the outside. Thanks to these spring elements 7, the cover plate 27 can perform a tumbling movement on the base plate 28, that is to say they tilt in each direction. The displacement or rolling of the spring elements 7 in the grooves 11 by means of a push-pull cable with its two cables 31,32, which of the person sitting on the office, work and leisure chair person by means of a lever, a Verstellrades or Rotary handle on the armrest can be operated. A push-pull cable pull has the advantage that it can be removed a little by pulling or pushing, and in addition, any adjustment position can be locked. It is advantageous if this lever is arranged above the seat. But an arrangement below the seat is of course also possible. Instead of a push-pull cable with two cables 31,32 can also occur a Bowden cable. Its cable 12 then pulls the spring elements 7 towards the center, while the spring elements 7 always by means arranged on the bottom plate 28 tension springs 8 to the outside of the Periphery are drawn. The connecting cable between the outside of the spring elements 7 and the tension springs 8 via one or more pulleys 35. The closer the spring elements 7 are at the center of the bottom and top plate, the easier it is the top plate 27 with respect to the bottom plate 28 tumble, and ever farther out on the periphery they are, the more tenacious they can stagger. In an embodiment in which each spring element 7 is individually displaceable, any characteristics of the tumble can be adjusted, so that about the tumbling towards the back is easier than against the front, etc. As a variant of these adjustment also a hydraulic or pneumatic adjustment can be realized. Hydraulic lines or pneumatic hose lines lead to small piston-cylinder units, which move the spring elements by retraction or extension of the piston. Finally, an electric variant is executable, after which the push-pull cable can be operated by electric motors at the touch of a button. However, this requires a battery as energy storage.

On top of the cover plate 27, the seat support 19 is immovably placed, which forms the actual seat cushion. The seat support 19 or its lowermost support plate 65 has for this purpose at the bottom a recess which can be placed on the cover plate 27 with a precise fit and can be screwed to it from below. Further, the seat pad 19 is laminarly constructed of two or more layers and includes a support plate 65 from below, followed by a lower support layer 64 made of a soft elastic material and having an upper support layer 20 harder than the lower support layer 64 is executed. It can be made up of even more layers. It is important to note that a harder layer follows a softer one upwards, although a softer one may also be present at the top. Thus, the chair is in this assembled state of the elements described with its cover plate 27 and seat support 19 thanks to the mechanical spring elements 7 wobble, in all directions.

The FIG. 2 shows the means 6 for the realization of the tumble in an enlarged view. One recognizes the bottom 28 and cover plate 27, each with a hole 29 in the center, through which the push-pull cable 31,32 or Bowden cable 12 are guided for the displacement of the spring elements 7. On the two opposite sides of the bottom 28 and cover plate 27 are each provided with four radial grooves 11, which serve as driving grooves in which the field elements 7 are displaceable. It is therefore in these spring elements 7 in this case to rollable car. The upper plate 13 carries two rollers 9 made of steel or hard plastic, which they project upwards and the lower plate 14 two just such roles 10, which they project downwards. With these rollers 9, 10, the spring elements 7 travel along the grooves 11 back and forth, inwards toward the center of the bottom 28 and cover plate 27, and outwardly at the periphery thereof. It is clear that the grooves 11 can also run differently than radially. Thus, they can be at an angle to the radial, whereby a finer adjustability is achieved because the displacement is greater. In addition, the grooves can also run in a spiral, so that an even longer displacement is achieved. Each spring element 7 consists of an upper 13 and a lower plate 14. Between these two plates 13,14 a compression spring 15 is installed in the example shown. This can be linear or progressive springy and it has a travel of several centimeters. This travel is also selectable, and the spring elements 7 are interchangeable, so that they are adaptable to the weight of a person who should use the chair. The actuation of the displacement is preferably carried out by means of a push-pull cable 31,32, which is attached to the front and rear of the car, so that you can move the car in both directions, or with a Bowden cable 12, in each case then a tension spring 8 needed is, which constantly pulls the spring elements 7 to the outside, because with the Bowden cable 12 can be pulled only in one direction, namely against the center of the bottom 28 and cover plate 27 out.

The FIG. 3 shows a single spring element 7 as a carriage with the upper plate 13 with its rollers 9 and the lower plate 14 with their rollers 10. In between, an air bladder 16 is arranged as a compression spring. Such a bellows 16 acts by itself progressive, that is, the further it is squeezed, the more force or weight is needed to push it even further together.

The FIG. 4 shows another example of a single spring element 7 in the form of a carriage with the upper plate 13 with its rollers 9 and the lower Plate 14 with its rollers 10. In between two leaf spring assemblies 17 are installed as suspension. The characteristic of this spring element 7 can be easily changed by one more or two leaf spring assemblies are installed more, or those with different spring force. Thus, the tumble characteristic of the cover plate 27 on the bottom plate 28 can be easily changed. In a further variant, the spring element 7 may also be designed as a sliding body instead of carriages, which are mounted in these grooves 11 on slide rails and are therefore mounted displaceably in the grooves 11.

The FIG. 5 shows another example of how the adjustable suspension can be realized. According to this embodiment, a resilient elastomeric roller 18 rolls in the driving grooves 11. On her is a sliding plate 30 which is displaceable at both ends by pulling the cables attached thereto 31,32 in both directions. These cables 31,32 belong to a push-pull cable, which is actuated by a lever on the chair. Again, a Bowden cable can be used as an alternative.

The FIG. 6 shows an office, work and leisure chair, open at the bottom so that you can see here the floor 28 and ceiling plate 27, with the spring elements 7 in between. On top of the cover plate 27, the seat cushion 19 is located. This chair is equipped with armrests 24 which lie on height-adjustable armrests 23. At the here an arm support 23, a lever 26 is arranged to actuate a push-pull cable with its two cables 31,32 or a Bowden cable 12. The cables 31,32; 12 lead to the center of the bottom 28 and cover plate 27, for the metered displacement of the spring elements 7 between bottom 28 and cover plate 27 for the change of the wobble characteristic of the seat cushion 19th

The FIG. 7 shows the assembled office, work and leisure chair with wobble seat 19 in a view from the front. One recognizes the foot cross 1 and the gas spring support 2. The whole construction of interface plate 5 including the mechanism for the tumble is laminated on office or work chair of a skirt 33, which protrudes from the top plate 27 down to a piece down via the interface plate 5. Thus, the whole construction for the tumble of the seat cushion 19 is hidden, even with a maximum wobble inclination 19. Rear, opposite the seat back 22 attached to the gas spring support 2 or the interface plate 5, the skirt 33 has a vertical slot, if necessary, to provide a passage for the backrest attachment. The skirt 33 may be formed, for example, by a solid or flexible metal or plastic jacket. It can be covered with a fabric or other suitable material so that it also looks decorative.

• Verschieben der Federelemente 7 auf der Bodenplatte 28, kollektiv oder individuell;
• Verstellen der Höhe der Sitzfläche 19
• Verstellen der Neigung der Rückenlehne 22
• Verstellen der Sitzauflage 19 auf der Interface-Platte 5 nach vorne und hinten
• Verstellen der phoronomischen Elemente seitlich der Wirbelsäulenstütze (wie das noch beschrieben wird);

Laterally on the interface plate 5 or on the support 2 height-adjustable armrests 24 are attached in a conventional manner. As a special feature 24 several handle lever 26 are arranged on the armrests. They are used to adjust and adjust various functions of this particular chair. As indicated by the arrows above the seat 19, this can in the directions shown or a superimposed in all directions to tumbling movements. The tumble, its softness or hardness and the tumbling paths can be adjusted. This is very important because people with very different weights must be able to use the chair, whether a lady weighing 45 kg or a gentleman with a healthy body weight of 150 kg or even more. For a heavy person you will use harder springs than for a light person. By operating the various push-pull cables or Bowden cables associated, here indicated by dashed lines cable 12 or pairs of cables are put under train or pressure, which thus move the spring elements 7 between the bottom and top plate, and allow the height adjustment of the support 2 and also the adjustment of the inclination of the backrest 22. The backrest 22 is pivotally mounted on the interface plate 5 or on the support 2 spring-loaded, in a conventional manner. Overall, with the push-pull cables 31,32 or with the Bowden cables 12 or with hydraulic, pneumatic or electrical means following adjustments or adjustments can be made:

• Shifting the spring elements 7 on the bottom plate 28, collectively or individually;
• Adjusting the height of the seat 19
• Adjusting the inclination of the backrest 22
• Adjusting the seat cover 19 on the interface plate 5 forward and backward
• Adjusting the phoronomic elements laterally of the spine support (as will be described);

The FIG. 8 shows an armrest 24 of the office, work and leisure chair with the mounted below the armrest lever 26 for actuating a push-pull cable or Bowden cable 12 for the displacement of the spring elements between the bottom and top plate. Both armrests 24 each rest on a height-adjustable backrest support 23, which are fastened to the base of the chair or to the interface flap 5. Handle levers 26 are attached to the backrests 23 as shown by an example, similar to a bicycle or motorcycle brake lever. Instead of a lever could also occur a rotary knob or knob. This lever or just the rotary knob or the rotary handle pull the cable of the push-pull cable or Bowden cable 12, whose cables move at the spring elements 7, as already described, when actuated. The handle lever 26 is pivotally mounted in a base 46, and this base 46 is connected to the backrest support 23. So that sufficient adjustment is achieved with the lever movement, the cable of the Bowden cable can form a pulley in the reverse manner below the seat cushion, or the push-pull cable can be translated to achieve a greater path.

The FIG. 9 shows a lever 26 on the armrest supports 23 with a device for locking the wire rope of the Bowden cable 12 in each position by means of a spring-loaded, about a transverse axis 59 pivotable clamping plate 50. The wire 31,32; 12 is bordered in the end of a steel cylinder 49, with which it is firmly connected. Its end carries a head 54, which sits in a socket 55 in the handle lever socket 46. The handle lever 26 is pivotable about the axis 47, against the force of a spring 8, which constantly keeps the spring elements 7 between the bottom and top plate outwardly under tension. So that the wire rope 31,32; 12 in each clamping position and thus in each position of the spring elements 7 can be locked, a pivotable clamping plate 50 acts at a very steep angle, with slightly less than 90 °, on the steel cylinder 49 which is supported on the other side along a support surface 48. The clamping plate 50 is spring-loaded by a steel spring 53 and is thus constantly pivoted against the steel cylinder 49. Will the handle lever 26th operated and pivoted here in a clockwise direction, he pulls the wire rope 31,32; 12 up and the steel cylinder 49, the wire rope 31,32; 12, is pulled up with it and slips past the leading edge of the clamping plate 50. As soon as the handle lever 26 is released, the tension spring 8 (FIG. FIG. 2 ) the wire rope 31, 32; Retract 12 down, causing an instantaneous firm jamming of the steel cylinder 49 with the clamping plate 50. The wire rope 31, 32; 12 and its steel cylinder 49 can only go down when the clamping plate 50 is previously pivoted against the force of the spring 53 in a clockwise direction and releases the steel cylinder 49 for moving. This lock by the clamping plate 50 can be solved by pressing down on the spring-loaded by the steel spring 53 push button 51.

After this office, work and leisure chair and its components have been shown and described, its function and its effects on the person using it are explained below. The height of the office, work and leisure chair or its seat 19 can be adjusted in a conventional manner by the height-adjustable support 2, which contains a gas spring for this purpose. An important difference, however, is that the operation is done by means of a push-pull cable or Bowden cable and the associated lever 26 is mounted above the seat 19 on an armrest. This is much more convenient than having to search for a lever virtually blindly under your seat. With the lever 26 from sitting, the chair can be reduced in height by the Bowden cable releases a lock, so that the support 2 is telescopically reduced in length, against the force of the gas spring. To increase the seat 19, the seat 19 must be somewhat relieved, as in previous height adjustments of office chairs with gas spring support. 2

The seat can wobble in all directions because it rests on the wobble cover plate 27, which in turn rests on spring elements 7 between them and the bottom plate 28. The closer the spring elements 7 are placed to the periphery of the bottom and top plates, the more tenacious and limited are the tumbling movements when the person sitting on the chair tilts to one side or to the front or the rear. Assuming a hard adjustment of the tumble, so from this setting, the spring elements 7 closer be moved against the center. The seat 19 is then tumble around a larger tilt angle, and with less force or weight. If the handle lever 26 is actuated, the push-pull cable or a Bowden cable is actuated and the spring elements 7 are moved outwards or inwards. They can also be individually moved in a version with their own push-pull cable or Bowden cable. Thus, the tumbling motion can be adjusted as desired. The seated person will unconsciously constantly keep the seat 19 in balance, for which their pelvic muscles are always subliminally active.

Overall, this office, work and leisure chair - without active force from the office, work and leisure chair itself - subliminal, subdued pelvic movements of the person sitting on it. This is realized by means of this adaptive load-dependent kinematics of the wobble-capable seat support 19 presented here. The fact that the seated person, in principle, never sits on a completely stationary seat, so she is constantly in an imperceptible subliminal movement of her pelvis. Therefore, coupled motions are induced. This activity of the musculature has a lasting positive effect on the whole body as well as on the mental capacity of the seated person.

In FIG. 10 another embodiment is shown, which can be implemented both on a chair as well as on a retrofit kit. The upper cover plate 27 is rotatable relative to the lower cover plate 28. Also, the upper end of the spring elements 7 is designed to be rotated relative to the lower end of the spring elements 7. Further, the grooves 11 are designed as sliding or driving grooves for the spring elements 7 in their course, the rotation of the cover plates 27,28 relative to each other causes a displacement of the spring elements 7 in the grooves 11. This ensures that the wobble characteristic of the chair can be changed solely by the rotation of the seat support 19. In all the embodiments described above with spring elements 7, be it the spring either compression springs, leaf springs, air bellows or elastically deformable elastomer rollers, the spring elements also allow a lateral resilient displacement of the cover plate 27 relative to the bottom plate 28. The seat support 19 can therefore also in Slightly deflect laterally, which is intended and leads to a further, desired seat dynamics.

In a further embodiment, the positions and the height of the spring elements 7, which change due to the wobbling behavior of the seated person, can be detected by sensors and stored in a computer unit. Or the wobbling over time can be detected by software of a smart phone. For this purpose, the cover plate 27 or seat support 19 is equipped with a slot-shaped garage, in which a smartphone can be inserted, so that it participates in all the tumbling movements and registered their dimensions and their directions. The data can then be read out, stored in a computer unit and further evaluated. They represent an individual user profile.

Such an office, work and leisure chair with a staggerable seat can also be equipped with a very special backrest for stimulating subliminal movements of the back muscles, as in FIG. 10 shown in a view from the side. The special feature of this office, work and leisure chair then consists in its backrest and its construction of phoronomic elements, to induce subliminal movements of the back muscles. For this purpose, two pillar bands 71, 72 extend as a backrest 22 behind the seat surface 19 vertically upward, along the spinal column of a person sitting on the seat surface 19 of the chair, on such a phoronomic backrest 70. Each of these bands is a flat, elastically deformable band is made of, for example, plastic, wood or a metal sheet. The rear column strap 72 attached to the interface plate or de support 2 and runs from here with a lateral contour, which is modeled on the contour of the buttocks and the back of a seated person, first to the rear and then upwards. Meanwhile, this column belt 72 can be made at its attachment point below the seat in its inclination. This one in here FIG. 11 shown office, work and leisure chair has a special feature behind his apron 33 on a cover plate, under which rest all elements for the tumble of the seat 19. The bottom plate, in turn, is slidably supported on the interface plate, which is mounted on top of the support 2, with respect to the office, work and leisure chair, forwards and backwards. Serve for example, sliding or Roll rails. The displaceability can be accomplished by means of a push-pull cable or a spring-loaded Bowden cable, wherein the associated actuating lever 26 is arranged above the seat 19 on an armrest 24.

The special construction of this phoronomic backrest 70 opens up FIG. 12 which discloses a specific embodiment in detail. The backrest is shown in a perspective view obliquely from above seen on the back side. It can be seen the central phoronomic element 70, consisting of the front column belt 71 and the rear column belt 72, which, however, is indicated below as dashed lines still continues. These two column belts 71 and 72 are connected to each other with connecting webs 74. These connecting webs 74 are here formed by flat, rigid elements, each provided with a central hole to save weight. At both ends, these connecting webs 74 are pivotally connected to the inside of the front pillar band 71 and the rear pillar band 72, respectively. Between the column belts 71, 72, an air cushion 80 can be installed against one another for damping the relative movements of the two column belts 71, 72. Thus, when relieving the backrest this is restored to its original state. From the air bag 80, an air hose can lead to a connection point which is equipped with a valve so that it can be inflated by means of a pump with an individually selectable pressure and air can be discharged through the valve, for individual shaping of the column straps 71, 72 Of course, a plurality of such separate airbags 80 between the connecting webs 74 may be installed. By varying the length of the connecting webs 74, their arrangement and the number and the filling pressure of the individual airbags 80, the contour of the front pillar band 71 can be adapted to a particular back contour of a user. Alternatively, at least one steel compression spring may be installed between the front pillar band 71 and the rear pillar band 72, or even more. It is thus immediately evident that a pressure from the front on the front pillar band 71 reduces the distance to the rear pillar band 72, and due to the geometry of the arrangement of the connecting webs 74, the front pillar band 71 moves slightly upwards, ie to the rear, fixed on the chair mounted column belt 72 moves relatively upwards. At the front column belt 71 are the sideways transverse as ribs branching, phoronomic Elements 76 grown. These form the actual support surface of the backrest. When the front pillar band 71 moves up and down relative to the rear pillar band 72, so does the transversely projecting ribs, so that the entire support surface for the back of the person sitting on the chair is easily moved up and down, and in particular each time If the person reclines the backrest, it dodges slightly upwards. The extent of this upward movement is dependent on the contact pressure and the dimensioning and geometric arrangement of the connecting webs 74 between the front pillar band 71 and the rear pillar band 72. The ribs, however, are each also designed as phoronomische elements 76. They are each formed by a front transverse band 77 and a rear transverse band 78. These two transverse bands 77, 78 are connected to a plurality of connecting webs 79. These consist in the example shown of elastically flexible, each forming a S connecting webs 79 which are hinged at both ends to the inner sides of the transverse straps 77,78. In the present case, this is realized in such a way that these connecting webs 79 have at their ends transversely projecting bolts 81 which can be clicked into associated bolt sockets 82. These sockets 82 form two approximately semicircular bolt sockets and these are elastically spread apart from each other, so that the bolts 81 of the connecting webs 79 can be clicked into these sockets 82 and afterwards are pivotable back and forth in the sockets 82. Thus, the connecting webs 79 can be easily replaced by others. The removal and insertion can be done without tools and quickly.

The articulated connections of the connecting webs 74, 79 can be designed to be displaceable in the band direction on at least one or also on both attachment sides of the webs relative to the column belt 71, 72 or transverse band 77, 78. For example, the bolt sockets 82 may be longitudinally displaceably guided on the inner sides of the transverse bands 77,78. This displacement can be adjusted by means of push-pull cables or Bowden cables, with wire cables are guided around one or more pulleys in the end portions of the transverse bands 77,78, and are held in the case of a Bowden cable by a tension spring under tension. As the cables are pulled, the bolt sockets 82 are pulled against the center of the backrest or moved outwards. The cables are turned into a seated seat via pulleys inside the backrest construction Position easily accessible adjusting led to an armrest, which can be brought into different rotational positions and can be locked in any position.

The front cross straps 77 are provided here with holes for weight saving and their front sides are equipped with soft elastic pads 83. If pressure acts from the front on the front cross straps 77, the here S-shaped connecting webs 79 are slightly elastically deformed and due to the geometry and their arrangement also results in a slight relative displacement of the front transverse straps 77 to the rear transverse straps 78, this being the rear Depending on the direction of action of the resulting force, transverse bands 78 either extend a little further or are further curved and the front transverse bands 78 curve with their ends forward or backward. Overall, the front cross straps 77 nestle against the contour of the leaning back of the chair user. As a result of the relative movement of the front transverse straps 77 in the direction of the outside or inward, which is induced by the contact pressure, the back muscles are also massaged in this direction, albeit only very subliminally. With each new lean on this backrest so this moves slightly upwards, and the transversely projecting transverse straps 77 move slightly depending on the outside or inside. Overall, a low-threshold, yes subliminal, barely perceptible but still very effective massage of the back muscles is achieved, which has a positive effect on the remaining body parts.

The FIG. 13 shows a particularly advantageous and structurally simple design. The rear column belt 72 is made stronger and stiffer and connected via at least three hinged struts 74 with the front, weaker and more flexible column belt 71. At this front pillar band, the branching phoronomic elements 76 are grown, which in turn consist of a front transverse band 77 and a rear transverse band 78. Between the same several S-shaped connecting webs 79 are installed. This backrest design proves to be highly dynamic and extremely comfortable for the leaning chair user. When leaning, all elements work together in a harmonious manner and cling to the back muscles, causing subliminal movements, leaving the area immediately behind the user's spine free.

A chair with a wobble seat as described above in detail is also feasible by means of a retrofit kit, which can be placed on any chair. This retrofit kit for mounting on the non-wobble seat has all the above-described components for the tumble of the seat. In contrast to a complete office, work and leisure chair, the structure for the tumble of the seat cushion is designed as a device 6 for retrofitting, this device 6 to FIG. 2 already described in detail. The bottom plate 28 may have on its underside an encircling at its edge, downwardly projecting frame, the interior of which is filled by a heat-curable foam mass for conformal fitting to the seat surface contour of the seat of a conventional chair to be equipped. Thus, this unit 6 can be placed over the seat of an office, work and leisure chair, but also on a simple seat as a Tabouret. From now on a staggering seat is available for active and healthy sitting. As an alternative, the retrofit kit can also be placed anywhere - indoors or outdoors - on a seat, be it a wall, a seat or a seat in a sports stadium or theater, cinema or congress hall etc., and already a staggy seat is available.

Claims (17)

1. Office, work and leisure chair for causing subliminal movements of the person sitting thereon with a cruciform base (1) and freely articulated rollers (4), a gas-spring support (2) and resting thereon an interface panel (5) as a support panel and mounted thereon a base panel (28) bearing a seat cover (19) with a seat surface and back rest (22), characterised in that the seat cover (19) is borne in such a way that it has wobble capacity in that it rests via a cover panel (28) on a plurality of spring elements (7), which are displaceable radially, obliquely in relation to the radial or helically from the centre of the base panel (28) to the periphery of the base panel (28), said spring elements (7) being mechanically, hydraulically, pneumatically or electrically displaceable in position outwards or inwards, so that the wobble distance of the seat cover (19) and the attenuation of the wobble movement are variable.
2. Office, work and leisure chair according to claim 1 characterised in that the spring elements (7) are borne in a displaceable manner in that they each form a carriage with a lower panel (14) with two rollers (10) projecting beyond it downwards and an upper panel (13) with two rollers (9) projecting beyond it upwards, wherein a pressure spring (15) is incorporated between the panels (13, 14) and in that incorporated in the base panel (28) and in the cover plate (27) lying above it are grooves (11) as travel grooves for these carriages so that they are rollable along the grooves (11) by means of a push-pull cable (31, 32) or Bowden cable (12), the operating lever (26) of which is operable when sitting on the office, work or leisure chair.
3. Office, work and leisure chair according to claim 2 characterised in that the pressure spring is formed by at least one steel pressure spring (15), at least one air bellows (16) or at least one leaf spring package (17) .
4. Office, work and leisure chair according to claim 1 characterised in that the base panel (28) is provided with grooves (11) and the spring elements (7) are each formed of at least one elastic elastomer roller (18) each rolling in a groove (11) of the base panel (28) and on which displacement panel (30) lies, which can be displaced in both direction by means of cables (31, 32) of a push-pull cable so that it rolls on the elastomer roller (18).
5. Office, work and leisure chair according to claim 1, characterised in that in the base panel (28) and the cover plate (27) lying above it grooves (11) are formed in which sliding elements with built-in pressure springs are displaceably borne on slide rails and are displaceable by at least one push-pull cable (31, 32) or Bowden cable, the operating lever of which can be activated while sitting on the office, work and leisure chair.
6. Office, work and leisure chair according to any one of the preceding claims, characterised in that the following elements can be operated by means of a push-pull cable (31, 32) or a spring-loaded Bowden cable (12) wherein the associated operating lever (26) is arranged above the seat surface on an arm rest (24) or arm rest support (23):

   a. the height adjustment of the gas spring support and thus of the seat surface (19),

   b. the inclination of the back rest (22) adjustable against the force of a spring,

   c. the displacement forward and backwards of the base panel (28) on the interface panel (5) or also of the interface panel (5) in relation to the office, work and leisure chair.
7. Office, work and leisure chair according to any one of the preceding claims, characterised in that its wobble-capable seat cover (19) or cover panel (27) has a receiving slit for the horizontal insertion of a smartphone with an app pertaining to this office, work and leisure chair for recording the sitting behaviour of a person sitting on the retrofit kit in that the wobble movements are recordable over time by the smartphone and capable of being evaluated and displayed and wirelessly outputted by the app.
8. Office, work and leisure chair according to any one of the preceding claims characterised in that the seat cover (19) comprises a two or multiple layer, laminate-like layer structure wherein a lower support layer (64) is of a soft elastic design and an upper support layer (20) is harder and in that the upper cover panel (27) is able to be turned relative to the lower cover panel (28) and the upper end of the spring element (7) is able to be turned relative to the lower end and in that the course of the grooves (11) for the spring elements (7) is such that the turning of the cover panels (27, 28) relative to each other brings about a displacement of the spring element (7) in the grooves (11) so that the wobble characteristics of the chair is changeable solely through turning the seat cover (19).
9. Retrofit kit for mounting or placing on the non-wobble-capable seat surface of a conventional chair or any seat surface to bring about subliminal movements of the person sitting on the retrofit kit, characterised in that the retrofit kit comprises a seat cover (19) capable of wobbling in that it sits on a cover panel (27) which rests on a plurality of spring elements (7) which are each borne so as to be displaceable radially, obliquely in relation to the radial or helically from the centre of the base panel (28) to the periphery of the base panel (28), said spring elements (7) being mechanically, hydraulically, pneumatically or electrically displaceable in position outwards or inwards, so that the wobble distance of the seat cover (19) and the attenuation of the wobble movement can be varied.
10. Retrofit kit according to claim 9 characterised in that the spring elements (7) are borne in a displaceable manner in that they each form a carriage with a lower panel (14) with two rollers (10) projecting beyond it downwards and an upper panel (13) with two rollers (9) projecting beyond it upwards, wherein a pressure spring (15) is incorporated between the panels (13, 14) and in that incorporated in the base panel (28) and in the cover plate (27) lying above it are grooves (11) as travel grooves for these carriages so that they are rollable along the grooves (11) by means of a push-pull cable (31, 32) or Bowden cable (12), the operating lever (26) of which is operable when sitting on the office, work or leisure chair.
11. Retrofit kit according to claim 10 characterised in that the pressure spring is formed by at least one steel pressure spring (15), at least one air bellows (16) or at least one leaf spring package (17).
12. Retrofit kit according to claim 9 characterised in that the base panel (28) is provided with grooves (11) and the spring element (7) is formed of at least one elastic elastomer roller (18) each one rolling in one groove (11) of the base panel (28) and on which a displacement panel (30) lies which is displaceable in both directions by means of cables (31, 32) of a push-pull cable so that it rolls on the elastomer roller (18).
13. Retrofit kit according to claim 9 characterised in that in the base panel (28) and the cover panel (27) lying above it are grooves (11) in which sliding elements with built-in pressures springs are borne in a displaceable manner on slide rails and are displaceable by at least one push-pull cable or Bowden cable, the operating lever (26) of which is operable while sitting in the office, work and leisure chair.
14. Retrofit kit according to claim 9 characterised in that the upper cover panel (27) is twistable relative to the lower cover panel (28) and the upper end of the spring element (7) is twistable turned relative to the lower end and in that the course of the grooves (11) for the spring elements (7) is such that the twisting of the cover panels (27, 28) relative to each other brings about a displacement of the spring element (7) in the grooves (11) so that the wobble characteristics of the chair are changeable solely through turning the seat cover (19).
15. Retrofit kit according to any one of claims 9 to 14 characterised in that on its underside the base panel (28) has a circumferential, downward projecting, apron-like frame, the interior of which is filled with a foam mass, which can be hardened though the supply of heat, for moulded adaptation to the seat surface contour of the seat surface of a conventional office, work and leisure chair.
16. Retrofit kit according to any one of claims 9 to 15 characterised in that in its seat cover (19) or cover panel (27) it has a receiving slit for the horizontal insertion of a smartphone with an app pertaining to this retrofit kit for recording the sitting behaviour of a person sitting on the retrofit kit in that the wobble movements is recordable over time by the smartphone and is capable of being be evaluated and displayed and wirelessly outputted by the app.
17. Retrofit kit according to any one of claims 9 to 16 characterised in that the seat cover (19) comprises a one or multiple layer, laminate-like, layer structure, the lower support layer of which is of a soft elastic design and an upper support layer is harder.

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