EP3478129B1 - Base for an item of seating furniture - Google Patents

Description

The invention relates to a foot for a piece of seating furniture, in particular for a chair, stool or standing stool, which is connected to the foot via a single leg which is generally adjustable in height.

It is now known that office chairs in particular should be flexible so that the back muscles are stabilized and strengthened in order to prevent back problems. The known movable seating furniture uses different principles: in the "Sitness 20" model sold by the applicant, the foot consists e.g. essentially from an air-filled tire.

In the DE 20 2014 000 079 U1 discloses a movable stool which has an annular base, the inwardly leading profile of which tapers continuously downwards in diameter, and continuously changes from the vertical position above to a horizontal position below the floor and thus develops an increasing restoring behavior with increasing load. This should enable automatic weight adjustment.

The known movable bases or feet allow a tilting movement of the seat surface, but smaller micro movements, for example in the lateral direction, are only possible to a limited extent. However, it is precisely these minimal movements that train the back muscles the most, without consciously using the seated person and thus distracting them from work.

The KR 101 422 684 B1 shows a foot, which on its underside facing the floor is an elastic element with projections. document US 2016/088944 A1 shows a foot of a chair with a single elastic element. In the non-generic US 2013/276845 A1 discloses an attachment for a walking stick with anti-slip function. The FR 1 232 490 A describes a foot for a stool with an underside facing the floor, an elastic surface being formed on this underside. Finally, the shows FR 2 684 529 A1 a foot for a piece of seating furniture which has on its underside facing the floor a plurality of elastic elements projecting from the underside.

The object of the invention is therefore to provide a foot for a piece of seating furniture which also allows small movements and / or vibrations of the seat surface. Another object of the invention is to provide a foot for a piece of seating furniture which is also simple and inexpensive to manufacture.

This object is achieved by a foot for seating furniture according to claim 1 and a seating furniture according to claim 15. According to the invention, the foot rests on several elastic elements projecting from the underside. "Projecting" means in particular that the elastic elements protrude from the plane of the underside or protrude from it, in particular downward in the direction of the floor.

When the seated person moves, the elastic elements carry out micro-movements which lead to a particularly advantageous vibration of the seat surface. In particular, small movements, ie vibrations with a small amplitude, are preferably possible in different directions. Overall, the foot according to the invention allows the furniture to be protected against tipping over while at the same time being movable.

According to a preferred embodiment, the elastic elements allow both lateral and vertical movements. In particular, it is advantageous if the individual elastic elements allow a slight displacement of the foot parallel to the floor, preferably in all directions, and thus allow lateral movements. In addition, in advantageous embodiments, the elastic elements can also be elastically, for example elastically, compressed in the vertical direction, that is to say perpendicular to the floor. This enables both a vertical movement and a tilting movement of the seat surface, the latter in particular if the elastic elements are only shortened elastically on one side of the foot. In particular, the foot acts like a fitness sole of a sneaker, which allows both a movement around the fitness sole and a movement of the fitness sole itself.

In advantageous embodiments, the elastic elements are made of an elastic material, in particular polyurethane (in particular TPU) or polyethylene. Rubber or rubber is also possible. Preferably, the elastic elements are part of a foot base, which forms the underside of the foot and z. B. is made by injection molding. In advantageous embodiments, the entire underside is formed from the elastic material in the manner of a fitness sole, e.g. the entire base of the foot. The elastic material advantageously has a Shore A hardness of 50 to 70. The elastic elements are e.g. B. elevations made of elastic material, which can have a round or angular longitudinal or cross-section. In preferred embodiments, the elastic elements have a height and / or width of more than 10 mm, preferably 15 to 50 mm, more preferably 20 to 40 mm, even more preferably 25 to 35 mm. The elastic elements have their base above the underside, so that they protrude only slightly (for example 1-5 mm) from the underside despite the greater height.

In advantageous configurations, between 6 and 70, preferably between 20 and 40, elastic elements are arranged on the underside of the foot. The number of elements depends on the spring constant or the hardness / elasticity of the elastic elements. However, it has been shown to be beneficial Seat dynamics can be achieved in particular by more than 6 elastic elements.

The underside is typically slightly curved outwards (i.e. towards the floor) so that all elastic elements come into contact with the floor when sitting quietly, and preferably only the elastic elements. In advantageous embodiments, the foot additionally allows a tilt where this is no longer the case, e.g. by "rolling" the bottom of the foot outwards. This happens e.g. when the seated person tilts consciously. The normal movement when working is preferably absorbed by the elastic elements in such a way that they do not lose contact with the floor.

The elastic elements are preferably movable or deformable independently of one another. This distinguishes the new foot from the models, for example with air-filled tires, since it represents a single vibrating object. As a result, it has completely different amplitudes and natural frequencies than the elastic elements according to the invention, which vibrate with a lower amplitude and with a higher frequency. It is also possible to arrange different types of elastic elements on the underside, so that some elastic elements allow different types of movements (e.g. with a greater amplitude or in other directions) than the others. Movements in all directions, both translational and rotational movements, are advantageously possible, in particular each having a comparatively small amplitude.

In a preferred embodiment, the ratio of the projecting areas of all elastic elements to the projecting area of the underside is between 10% and 30%, preferably between 15% and 22%. If one projects the underside of the foot onto the floor, this results in an area which is set in relation to the sum of the corresponding projecting areas of the elastic elements. The projected area of an elastic element can also correspond to its contact surface on the floor, but this is not absolutely the case, since the elastic elements are partially on their underside still have a certain texture, at least not necessarily lying on the floor over the entire surface. The projecting area of an individual elastic element can thus take up between 0.2 and 2% of the total area of the underside, all elastic elements together, for example, make up 10 to 30%. This results in a particularly advantageous interplay of the mobility of the seating furniture on the one hand and stability and tipping safety on the other hand.

The two elastic elements which are the most distant from one another are preferably at least 23 cm apart (measured from center to center of the elastic elements), particularly preferably at least 25 cm. This also helps to improve the tipping safety of the foot without restricting the freedom of movement of the seated person.

The foot preferably has a round base, i.e. the projecting surface of the underside is round. Alternatively, however, polygonal shapes, e.g. 5-, 6- or 8-sided conceivable. Advantageously, there is an edge of the foot, which is advantageously made of elastic material, or part of a e.g. one-piece base is made of the elastic material. As a result, the seating furniture and thus the foot can be tilted without losing its grip on the floor. This enables particularly flexible, mobile sitting and working, especially with a stool.

The elasticity and mobility of the foot is preferably determined by the material properties (elasticity, hardness, etc.) and the shape of the elastic elements or the lower part of the foot - in contrast to stools according to the prior art which work with pneumatic tires. The foot or foot base according to the invention preferably contains no pneumatic tire or other elements under air pressure.

According to the invention, the elastic elements are designed as profile blocks, each of which is surrounded by profile grooves. The profile grooves can be narrow or so wide that they are called cutouts. Preferably, at least some of the tread blocks and tread grooves are formed from a single piece of the above-mentioned elastic material. In particular, the foot has a foot lower part made of the elastic material described above, for example polyurethane, in which the profile blocks and profile grooves are formed. In an advantageous embodiment, the profile grooves are so deep (and thus the profile blocks are so high) that the profile blocks can oscillate individually or relatively independently of one another. In particular, in some embodiments the ratio of the largest diameter of a profile block (viewed from the bottom) to its height is between 0.6 and 1.0. This relationship determines - in combination with the hardness and other properties of the material and the shape of the profile blocks - the vibration properties of the foot. It has been shown that such a ratio, preferably between 0.75 and 0.9, results in a particularly pleasant lateral mobility and tilting movement of the seat surface. The depth of the profile grooves, which is for example between 15 and 45 mm, in particular 22 to 33 mm, also contributes to this. This dimensioning of the tread blocks and tread grooves ensures that the seat carries out micro movements which strengthen the back muscles of the seated person without having to make disturbing compensatory movements in order not to lose balance.

In addition, in some embodiments, the elastic material also has suitable damping properties. The aim is that the seat surface should be movable, but this movement should not rock or lead to a continuous and therefore unsettling vibration. Instead, the above-mentioned micro movements should be permitted, but then also dampened to enable quiet working. In addition to the material properties from which the profile blocks are made, it is advantageous in terms of damping if at least some of the profile blocks are at least partially hollow. The air thus trapped leads to advantageous vibration damping.

Seen from the underside (or also in cross section, i.e. in section parallel to the floor), at least some of the profile blocks have a round or hexagonal shape in some configurations. These almost circularly symmetrical shapes have the advantage that lateral movements / vibrations are evenly permitted in all directions. Of course, however, other shapes are also conceivable, for example rectangular, square or even octagonal. It is also conceivable to provide a slat profile, it being advantageous if the slats are oriented in different directions in different areas of the underside.

At least some of the profile blocks advantageously have a rectangular longitudinal section. This creates a particularly advantageous vibration and movement behavior. A more damped vibration would be e.g. to achieve by a trapezoidal longitudinal section, which is also advantageous. Alternatively, the profile blocks can also be round at the bottom.

In an advantageous embodiment, the profile blocks each have at least one raised area on their side facing the floor. This improves the grip on the floor and thus ensures that it does not slip. Alternatively, the profile blocks can also have a different texture on their side facing the floor, in particular a non-slip texture, for example grooves or a flat profile. In a preferred embodiment, the side of the profile blocks facing the floor is flat, that is to say at a level with the underside of the foot. The raised areas mentioned then protrude accordingly, so that only the raised areas are in contact with the floor. In some embodiments, several raised areas are provided per profile block. The height of the raised areas above the underside is, for example, 1 to 4 mm, in particular 1.5 to 2.5 mm. In other words, the elastic elements preferably protrude from the underside by approximately this amount.

Areas of the underside, which do not protrude, are provided between the profile blocks and in particular also consist of the elastic material. In the event of a tilting movement of the foot, these can also partially touch the floor and thus support the resilient and cushioning effect of the foot.

As already mentioned, the tread blocks and tread grooves are preferably formed from an elastic material in a base of the foot. If the foot base is relatively soft, it is advantageously connected to a stable support. In some embodiments, this is formed by an upper part of the foot, which preferably has cutouts or openings. Preferably, the top of the foot consists of a harder material, in particular plastic, e.g. B. polyamide. The cutouts can be punctiform or elongated incisions or openings. The cutouts advantageously form a desired pattern / picture element or a lettering. By means of these cutouts, the elastic material of the lower foot part can advantageously be seen from above, and can even easily penetrate into the cutouts when the foot moves accordingly. This leads to a pleasant design effect, especially if the bottom and top of the foot have different colors.

In advantageous configurations, the elastic material of the base of the foot is colored, for example in yellow or green. This results in an innovative design effect, in particular in the embodiments in which there are recesses in the upper part of the foot.

To ensure movement in all directions, it is advantageous if the elastic elements are evenly distributed over the underside of the foot. In particular, a point-symmetrical and / or mirror-symmetrical distribution is possible. For example, between 1 and 5 elastic elements can be arranged in each 30 ° segment of the underside.

The invention is also directed to a corresponding piece of seating furniture which has a foot according to the invention, in particular it is connected to the one foot via a single leg. The leg is advantageously adjustable in height, for example via a gas spring. In some embodiments, such a high level of adjustability is achieved that the seating furniture can be used while sitting and standing, so it is a standing stool. On the other hand, the foot can also be used for children’s and youth’s chairs and stools, because it provides great protection against tipping and at the same time mobility. The foot can be used for a chair with back and / or armrests as well as for a stool (i.e. without a backrest) as well as for a saddle-like seat. The seating furniture is particularly preferably a work chair / stool, in particular office chair / stool.

Fig. 1

eine perspektivische Ansicht eines Sitzmöbels mit einem Fuß gemäß einer Ausführungsform der Erfindung;

Fig. 2

einen teilweisen Längsschnitt durch einen Fuß gemäß einer Ausführungsform der Erfindung;

Fig. 3

einen vergrößerten Ausschnitt aus Fig. 2;

Fig. 4

einen mittigen Längsschnitt durch einen Fuß gemäß einer anderen Ausführungsform der Erfindung;

Fig. 5

eine vereinfachte Draufsicht von unten auf einen Fuß gemäß einer Ausführungsform der Erfindung;

Fig. 6

eine vereinfachte Draufsicht auf einen Fuß gemäß einer weiteren Ausführungsform der Erfindung;

Fig. 7

eine Draufsicht von unten auf einen Fuß gemäß einer Ausführungsform der Erfindung;

Fig. 8

einen Schnitt entlang der Linie A-A in Fig. 7;

Fig. 9

einen Längsschnitt entlang der Linie B-B in Fig. 7;

Fig. 10

eine Draufsicht von oben auf einen Fuß gemäß einer Ausführungsform der Erfindung.

The invention will now be explained in more detail using exemplary embodiments with reference to the accompanying drawings. The drawings show:

Fig. 1

a perspective view of a chair with a foot according to an embodiment of the invention;

Fig. 2

a partial longitudinal section through a foot according to an embodiment of the invention;

Fig. 3

an enlarged section Fig. 2 ;

Fig. 4

a central longitudinal section through a foot according to another embodiment of the invention;

Fig. 5

a simplified bottom plan view of a foot according to an embodiment of the invention;

Fig. 6

a simplified plan view of a foot according to a further embodiment of the invention;

Fig. 7

a bottom plan view of a foot according to an embodiment of the invention;

Fig. 8

a section along the line AA in Fig. 7 ;

Fig. 9

a longitudinal section along the line BB in Fig. 7 ;

Fig. 10

a top view of a foot according to an embodiment of the invention.

The same or corresponding elements are identified in the drawings with the same reference numerals.

Figure 1 shows a perspective view of a seat 10 with a foot 1 according to an embodiment of the invention. The foot 1 is connected to a seat 2 via a column or a single leg 12. In the example shown, the actual seat is still missing, which can be placed and fastened on the illustrated base 2. The height adjustability of the seating furniture is realized by a conventional gas spring 11.

The leg 12 protrudes centrally from the foot 1, which in the example shown has approximately the shape of a circular disk. In this example, the top of the disc is provided with elongated cutouts 5 arranged in a star shape, through which the lower foot part 13 shimmers through. On its underside 3 there are various profile grooves 4, which will be explained in more detail below.

Figure 2 shows a foot according to an embodiment of the invention in a central longitudinal section. The gas spring 11 can first be seen therein. At the lower end of the gas spring 11 or the leg 12 is the foot 1, which partially rests with its underside 3 on the floor 20. In particular that is Chair leg 12 attached to an upper foot 15, which is made of a hard material such as plastic or metal, for example. On the underside of this upper foot part 15, an annular element 13 made of elastic material is attached, which is referred to below as the lower foot part 13. In the bottom part of the foot, the elastic elements 6 are designed in the form of profile blocks, each of which is surrounded by profile grooves 4. The profile blocks 6 protrude beyond the underside 3 of the foot, so that the foot rests exclusively on the sides 16 of the profile blocks facing the floor. There are also non-raised areas 7 between the tread blocks. The diameter d of the foot is, for example, more than 30 cm, in particular more than 32 cm, in order to ensure adequate tipping safety.

Figure 3 shows an enlargement of the profile blocks 6 in order to explain their function in more detail. The profile blocks 6 are formed in one piece with the base 13, which consists for example of polyurethane. Due to the elastic properties of this material, the profile blocks 6 can move or deform in various ways: on the one hand, they can swing laterally around their base points M1, which is symbolized by the arrow P1. The distance between the base M1 and the contact surface on the floor 16 is r, where r can be between 20 and 40 mm, preferably 25 to 35 mm, in preferred embodiments. This very high height of the profile blocks for a rubber profile leads to freedom of movement of the foot, which allows small lateral micro-movements of the seat. In particular, adjacent profile blocks swing synchronously with one another.

Furthermore, the profile blocks can also be compressed along the radius r. On the one hand, this allows a height suspension of the foot. In particular, however, this enables a tilting movement, namely if, for example, the profile block 6a shown on the left is compressed, while the profile block 6b shown on the right is not compressed, or even slightly stands out from the floor. This corresponds to a tilting movement around the point M2, which is symbolized by the arrows P2.

It goes without saying that the lateral movements (P1) and tilting movements (P2) shown can also be combined with one another as desired. Different elastic elements 6 can also participate in different types of vibrations and movements simultaneously. In particular, the lateral mobility of the elastic elements 6 shown with the aid of the arrows P1 results in a back-strengthening mobility of the seating furniture equipped with the foot.

Figure 4 shows another realization of the foot 1. This foot also has a foot upper part 15. This is followed, however, by a differently designed lower foot part 22. This has recesses 23. A spring element 24, in this case a helical spring, is located in each of the recesses. In the example shown, a stopper element 25 adjoins the lower ends of the coil springs 24, which stops on the floor 20 and is connected to the base 1 via the coil spring 24. In this case, the elastic elements 6 are essentially formed by a spring element 24 with a corresponding display surface to the floor, the spring element typically being made of metal and thereby requiring a further rubber element 25 as a non-slip base on the floor. The functionality of this embodiment according to Figure 4 is comparable to that of Figure 3 . Lateral and rotary vibrations can be permitted, the strength of the vibration and its amplitude depending on the spring constant.

Figure 5 shows a view from below of an underside 3 of a foot, which in turn is equipped with profile blocks 6 and profile grooves 4. In the center 18 there is the connection to the gas spring 11, so that this area is left out. The dotted areas each protrude from the bottom to the front and are part of the elastic elements or profile blocks 6. Different types of profile blocks are shown, in particular round and square ones. These are each surrounded by profile grooves 6, with some profile grooves also being directed radially outwards and not directly enclosing a profile block.

The profile grooves 4 are, for example, about 2 to 6 mm wide, preferably 3 to 5 mm. This allows sufficient lateral movement of the profile blocks.

Furthermore shows Figure 5 a round profile block 6, which has three round raised areas 8 which lie on the floor in use. Ie not the entire profile block protrudes over the bottom 3, but only the raised areas 8. This leads to an optimized support and adhesion to the floor.

Figure 6 shows an advantageous embodiment in which the profile elements 6 are hexagonal in plan view from below. This has the advantage that they can be arranged in a honeycomb shape. This allows a comparatively dense packing / arrangement of the profile blocks while at the same time maintaining a sufficient distance (in the form of the profile grooves 4) between adjacent profile blocks 6. In the example shown, 12 profile blocks are provided.

Here, too, additional profile grooves 4a are arranged in the elastic material 13 of the lower foot part 13. This supports the movement possibilities of the foot.

Figure 7 shows a plan view from below of a foot according to an advantageous embodiment of the invention. Here you can see the lower foot part 13, which is fastened to the upper foot part by means of screws 14, in this case Ejot screws. In the center of the round foot, the upper part of the foot can be seen in its central region 18, onto which the gas spring is attached.

The lower foot part 13 preferably consists of TPU (thermoplastic polyurethane), although other thermoplastic elastomers are also conceivable. It is preferably a super-soft plastic with hardnesses below 75 Shore-A. The foot base has a profile, which is described in more detail below the elastic elements are formed here by hexagonal profile blocks 6, which have a maximum diameter of 24 to 28 mm (preferably 26 mm) and are each surrounded by profile grooves, which are 4 mm wide and depth (measured from the underside 3 ) of approximately 28 mm. The profile blocks 6 are arranged in a honeycomb shape, with five profile blocks forming an open semicircle in each 60 ° segment.

The profile blocks do not project overall from the underside 3, but each have centrally oriented raised areas 8, which likewise have a hexagonal base area, but have a somewhat smaller diameter of only approximately 20 mm. These are in Figure 7 shown with thick borders. Only the surfaces of the raised areas come into contact with the floor 20 in use. In addition to the profile grooves 4 surrounding the profile blocks 6, radially extending additional profile grooves 4 a are also provided, which in this example have the same depth and width as the other profile grooves 4. These radially oriented incisions further increase the compressibility of the foot base and thus lead to greater mobility in the circumferential direction. It can e.g. B. 4-10 radially aligned profile grooves can be provided.

The pattern of the honeycomb profile grooves 4 continues in some places, even without a profile block 6 being completely surrounded by profile grooves, such as the profile groove extensions 4b. This creates additional profile blocks 19, which are not completely surrounded by profile grooves 4. In this example, the profile blocks 19 have no raised areas 8 and thus have no contact with the floor; however, this could be provided in other exemplary embodiments. However, it is advantageous if all profile blocks have at least substantially the same dimensions, dimensions and material properties so that they can vibrate together at the same frequency. In some exemplary embodiments, the natural frequency of the lateral movement P1 of the profile blocks is, for example, between 0.2 and 3 Hz.

Figure 8 shows a longitudinal section along the line AA in Figure 7 . First of all, the gas spring 11 can be seen, which is inserted into and held by the upper part 15 of the foot. The cut runs through one of the radial recesses 5 of the upper foot part 15 already mentioned above, so that the elastic material of the lower foot part 13 extends in this area to the top of the foot. Furthermore, one of the screws 14 is cut, with which the foot lower part is fastened to its holder (here the foot upper part).

The section clearly shows the longitudinal section of the two profile blocks 6 with their elevations 8 which protrude approximately 2 mm from the underside 3. The underside 3 is slightly convex overall, so that while normal sitting all raised areas 8 are in contact with the floor, the seat can still be tilted, for example if the seated person leans forward or otherwise moves. The cut also goes through the profile grooves 4, which are oriented radially here, so that their pronounced depth becomes clear. At this point, the tread blocks are approximately the same height as they are wide, which leads to optimal vibration and compression behavior (especially in the vertical direction) and thus ensures that the foot can perform the advantageous lateral micro movements and slight micro-tilts in order to sit in To allow movement.

In Figure 9 is the longitudinal section along the line BB in Figure 7 shown. As a result, the fine structure of the upper foot part 15 and lower foot part 13 is visible in this exemplary embodiment: in particular, both parts are not solid, but instead have an inner rib structure. This leads to stabilization while at the same time saving material, especially in the case of the upper part made of plastic. This has inwardly directed ribs 29 which surround corresponding cavities 28. The lower foot part made of a softer, elastic material also has cavities 26, which partially extend into the profile blocks 6. In this way, advantageous damping of vibrations of the profile blocks 6 is achieved in order to ensure a stable seating feeling. Between the cavities there are also ribs 30, which protrude upwards and partially into the cavities 28 of the upper part of the foot. This also has a favorable influence on the vibration behavior.

The exact design with ribs / cavities in Figure 9 is only exemplary, a solid base 13 can also be advantageous.

Figure 10 shows a top view of the foot of the Figures 7 to 9 . The gas spring 12 can be seen in the center, and in addition the foot upper part 15 with its radially oriented, elongated cutouts 5. Through these perforations, the elastic material of the lower foot part underneath is visible, which unites with a corresponding colored coloring of this material gives a pleasant visual effect, especially when the seating 10 is used. The movement of the foot is then reflected in the movement of the elastic material, which presses dynamically against the openings 5 at changing points.

Claims (15)

1. A base (1) for an item of seating furniture (10), in particular for a stool, which, on the bottom side (3) thereof facing the floor (20), comprises a plurality of resilient elements (6) projecting from the bottom side (3),
   wherein the resilient elements (6) protrude or project from a plane of the bottom side,
   wherein the resilient elements (6) are evenly distributed across the bottom side (3) of the base,
   wherein the resilient elements (6) are formed as tread blocks which each are surrounded by tread grooves (4, 4a), and
   wherein non-protruding regions (7) of the bottom side (3) or non-raised regions (7) of a lower portion (13) of the base (1) are provided between the resilient elements (6), characterized in that the resilient elements (6) have their base above the bottom side (3) such that they only protrude slightly from the bottom side (3) regardless of greater height.
2. The base (1) according to claim 1, wherein the resilient elements (6) allow both lateral (P1) and vertical movements (P2).
3. The base (1) according to claim 1 or 2, wherein the resilient elements (6) are formed of a resilient material, in particular polyurethane or polyethylene.
4. The base (1) according to one of the preceding claims, wherein between 6 and 70, preferably between 20 and 40 resilient elements are arranged on the bottom side (3) facing the floor (20).
5. The base (1) according to one of the preceding claims, wherein the resilient elements (6) are deformable and/or movable independently of each other.
6. The base (1) according to one of the preceding claims, wherein the ratio of the projecting surfaces of all resilient elements (6) to the projecting surface of the bottom side (3) is between 10% and 30%, preferably between 15% and 22%.
7. The base (1) according to one of the preceding claims, wherein at least a portion of the profile blocks (6) has a round or hexagonal shape, as viewed from the bottom side.
8. The base (1) according to one of the preceding claims, wherein the ratio of the largest diameter of a profile block (6) to the height thereof is between 0.6 and 1.0.
9. The base (1) according to one of the preceding claims, wherein the resilient elements or profile blocks (6) have a height and/or width of more than 10 mm, preferably 15 to 50 mm, more preferably 20 to 40 mm.
10. The base (1) according to one of the preceding claims, wherein at least some of the profile blocks (6) are at least partially hollow.
11. The base (1) according to one of the preceding claims, wherein at least some of the profile blocks (6) have a rectangular longitudinal section.
12. The base (1) according to one of the preceding claims, wherein the profile blocks (6) each have at least one raised region (8) on their side facing the floor.
13. The base (1) according to one of the preceding claims, wherein the profile blocks (6) and optionally the profile grooves (4), in a base bottom portion (13), are formed of a resilient material.
14. The base (1) according to one of the preceding claims, having a base-upper part (15) which includes reuses (5).
15. An item of sating furniture having a base (1) according to one of the preceding claims, in particular a stool, a stool for standing, or a stool for sitting and standing.

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