EP2568854A1

EP2568854A1 - Seat device

Info

Publication number: EP2568854A1
Application number: EP11720092A
Authority: EP
Inventors: Josef GLÖCKL
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-14
Filing date: 2011-05-16
Publication date: 2013-03-20
Anticipated expiration: 2031-05-16
Also published as: DK2568854T3; US9498067B2; CN102958403B; CN102958403A; WO2011141580A1; US20130057038A1; JP2013528430A; EP2568854B1; DE102010020503A1

Abstract

The invention relates to a seat device (1), consisting of a foot part (2), an intermediate piece (3) that is connected to the foot part, and a seat (4) that is connected to the intermediate piece (3) and is formed by two individual seat halves (5a, 5b), wherein the seat halves can be moved independently of each other, a coupling device (5) is arranged between the seat (4) and the intermediate piece (3), and the seat halves (5a, 5b) can be moved horizontally in a translatory manner by means of the coupling device.

Description

seat device

[001] The invention relates to a seat device consisting of a foot part, an intermediate piece connected to the foot part and a seat connected to the intermediate piece, which is formed with two individual seat halves, wherein the seat halves are movable independently of one another, and between Seat and the intermediate piece a coupling device is present.

State of the art

[002] From DE 42 10 134 A1, an active-dynamic seat device is known which has a foot part and an intermediate piece connected to the foot part. At the intermediate piece a seat is arranged, which is formed in two parts. The two seat part halves are mutually independently vertically resiliently connected to the intermediate piece and each have a support member on which a seat half is movably arranged on a hinge so that it can be tilted forward and backward. Furthermore, from DE 100 35 473 B4 a seat with a cup-shaped seat member and a back member for supporting the back is known, wherein the back member is pivotally mounted about an axis extending parallel to the user's spine. The seat element is connected via a coupling element with the pivotable back element, wherein the headrest pelelement proportionally transmits a rotational movement of the backrest in a lateral rotational movement of the seat element about the ventral-dorsal axis and vice versa.

During normal walking, the pelvis moves three-dimensionally, d. H. it performs rotations around all spatial axes as well as translations in the direction of the spatial axes. Due to the change from walking to sitting, at least one translatory and one rotational degree of freedom are blocked in the described seat constructions. Also changes with such a change the burden of the spine or the intervertebral discs. Thus, the pressure load during walking in a train-pressure load during sitting, whereby the discs on the dorsal side to train and on the ventral side are subjected to pressure changes. In the intervertebral discs, the highest stress occurs in the region of the vertebrae S1-L4, since the curvature in sitting is greatest here in comparison with standing. The L4 - L5 vertebrae connect to the os sacrum and are deprived of their natural mobility due to the interplay of spinal curvature and blockage of the degrees of freedom. As a result, individual discs can prematurely wear out and degenerate. This in turn leads to back pain and sometimes permanent damage to the intervertebral discs. Thus, the natural three-dimensional pelvic movement is blocked with its six possibilities of movement (three rotations about the spatial axes and three translations).

The invention is based on the object to provide a seat device which avoids the disadvantages of conventional seats and in particular allows a three-dimensional pelvic movement. The object is achieved by a seat device with the features of claim 1.

The seat device according to the invention consists of a foot part, an intermediate piece connected to the foot part and a seat connected to the intermediate piece, which is formed with two individual seat halves. The seat halves are movable independently of each other, wherein between the seat and the intermediate piece a coupling device is formed, which has at least one means, whereby the seat halves translationally in all spatial directions and rotatory about all spatial axes are movable.

The idea according to the invention is to open up the possibility of carrying out unrestricted three-dimensional pelvic movements while sitting down. Thus, the lumbar vertebrae and the pelvis are not blocked in their natural motion, but are movable both translationally and rotationally in all directions. The advantageous effect of the inventive coupling device is essentially to replace the negative loads during sitting by dynamic movements of the lumbar spine and the pelvis, which correspond to those during walking. The majority of the body weight is carried by the seat bumps when sitting.

For the greatest possible seating comfort, it is preferable to arrange at least one such means under each seat half. This is how it is possible to provide both pelvic canines with optimum support when sitting. This also allows for a wide variety of sitting positions and promotes well-being and mobility when sitting in any position and posture.

In addition, the at least one means favorably at least one elastic and / or a damping element. This allows a simple adaptation to the anatomical position of the ischial tuberosities of each seat occupant.

Preferably, the elastic and / or damping element consists of a rubber block that ensures mobility and also absorbs the pelvis soft. Alternatively, the elastic and / or damping element is embodied as a fluid-filled chamber, in particular as a gel pad, wherein the element, similar to the rubber block, permits a translatory displacement in the direction of the spatial axes and / or a rotation about the spatial axes , Alternatively, it is also possible to form the element from hydraulic cylinders. The advantages are the same as in the other embodiments. In a particularly preferred embodiment, an element is arranged under each seat half, wherein both elements communicate with each other are connected. This means that the pressure on an element below one half of the seat is transferred to the other half of the seat, similar to a waterbed. Thus, the same pressure prevails in each element, with the pelvic position and the personal seating needs acting. Alternatively, it is also possible to form the elastic element as a spring arrangement wherein the arrangement may consist of coil springs, so that a stored seat half is also three-dimensionally movable. The springs can be stored in different angles inwards to ensure lateral stability. In a further particularly preferred embodiment of the invention, the coupling device has a mechanism for adjusting the distance between the seat halves. Since people of different sex and age have different distances of the ischial tuberosities, this fact is thus taken into account. Consequently, such a seat device is suitable for men and women of all ages. The mechanism has, for example, a hand wheel, by means of which rotation the distance can be adjusted in an easy manner.

In another embodiment, a coupling device has at least one sliding region, which allows horizontal displacement. It is advantageous to design at least one sliding area per seat surface.

Furthermore, the at least one sliding region is advantageously designed as a linear guide, wherein the guide of the seat and coupling device of z. B. a dovetail guide is formed. Also, a guide is possible by means of rolling elements. Furthermore, it is advantageous if the coupling device has at least one tilting mechanism for at least one seat half. The inclination is preferably only possible around a ventral-dorsal axis, but may also deviate from the ventral-dorsal axis even with a special design. Thus, an "outflair" of the pelvis, in which the ischial tuberosities are pressed inwards and the pelvic shovels are pushed apart as a biomechanical countermovement, is counteracted biomechanically better to press the ischial tuberosities on the seat surface to the outside and thus the Pelvic scoops to move inward ("inflair"). This causes biomechanically a slight kyphosis of the lumbar spine which corresponds to the natural posture.

Further, it is advantageous if at least one seat half with respect to the position to the other presettable and / or limited in terms of their mobility by means of a arranged on the coupling device and / or on the tilting mechanism actuating mechanism. This is also advantageous because women and men have a different Sitzhöckerabstand. In this way, the inclination or the pelvic movement can be adjusted in both their intensity and in their deflection according to personal or therapeutic requirements. The seat can also be adapted to the age of the person sitting, as younger people are usually more mobile than older people.

In support of permanent change of position, the seat device advantageously has a return mechanism, which returns at least the seat half in a starting position. For the correct operation of the return mechanism, it is advantageous to arrange this between a seat half and the coupling device. Preferably, each seat half has such a return mechanism. In a particular embodiment, the seat device may comprise a device in which the force for changing the position of a seat half in and around all spatial directions is adjustable. In this way, the needs of users with regard to the pelvic movement can be exactly met. It is also possible to treat malpositions of the pelvis due to, for example, surgical interventions on the hip. Such a therapy can specifically train the musculature by adjusting the restoring force while sitting. Thus, those persons who work during their working hours can relieve their symptoms. Consequently, the seat device according to the invention can serve not only to relieve pain but also to promote the healing process.

Preferably, the return mechanism comprises a spring and / or a tension band. In this way, a simple reset of each Seat halves can be realized, wherein the restoring force is regulated by the tension of the spring or the tension band.

In a particularly advantageous embodiment, the seating device is a pendulum stool. Such pendulum stools are z. B. known from DE 195 04 121, which allow a resilient up and down movement of the seat, wherein the seat oscillates about a pendulum joint which is arranged in a foot part. In the arrangement of the seat device according to the invention on a footboard with pendulum joint thus more degrees of freedom and movement opportunities are opened to the seat occupant. In particular, in such an arrangement, the three-dimensional, natural movement of the pelvis is modeled while walking while sitting, the slippage of the intervertebral discs is not only possible, but also promoted.

In a further embodiment, it is advantageous if the mobility of the seat device is limited by means of variable stops. This allows people with limited hip mobility to grope slowly to greater flexibility. Consequently, it can be avoided by such a stop that with immobile seat users by a high mobility of the seat device, in particular in the arrangement on a pendulum stool, an overuse or a sense of uncertainty arises.

In a further preferred embodiment, the coupling device is rotatably mounted on the intermediate piece. Rotary movements about the body axis are thus also possible.

Further, it is advantageous if the seat halves provide a device with which the independently movable seat halves are blocked. Persons to whom strong mobility of the seat halves is uncomfortable, thus temporarily limited, but still use a seat device according to the above features.

For a correct seating position, it is advantageous if the seat device detects the seating position by means of at least one sensor and preferably has a device for feedback. As a result, it is possible to prevent a "trough" or a concave arrangement of the two seat halves from forming during sitting due to the three-dimensional mobility of the seat apparatus. lead the upper edge of the pool, whereby the lumbar spine would undergo a slight kyphosis. This should be avoided because the lumbar spine naturally has a slight lordosis on standing. A convexly sloped seating arrangement, therefore, aids in the naturally correct posture whereby the ischial tuberosars tend to outwardly and adjust to the "inflair" of the upper pelvic margins, which promotes appropriate lordosis lordosis.

Advantageously, the sensors can detect all movements of the seats. Particularly preferably, the sensors can detect inclination, angle of rotation and translatory movements. Also possible are pressure sensors. So it is possible to capture the current position of the ischial tuberosities.

In order to report the correct setting of the seats to the user, the seating device may have optical, acoustic and / or haptic elements. Haptic elements can send feedback to a seated person by means of vibrations, whereas acoustic z. B. can generate a warning tone. In the case of an optical message to the seat occupant, for example, different-colored light sources can be used, which in each case have a color of a light source for the various arrangements of the seat surface.

Thus, in the case of a concave inclination of the seating surfaces, a red signal indicates an undesired pelvic position, with a horizontal or convex inclination producing a green flare. Too strong a convex tilt of the seats, in turn, creates an undesirable seating position and glows orange. In the case of the synchronous inclination of the seats, a white light source is provided. Consequently, sensors with a corresponding feedback can also serve to set the optimum distance of the seats from each other. Also, ideally, the sensors for the feedback are connected to a computer that uses a software to make the user aware of his sitting position. A connection is made for example with a cable or via radio.

Also advantageously, the seat device is suitable with sensors for controlling software (eg a computer game) or even hardware (eg a lifting platform).

Advantageous embodiments and features will become apparent from the following description of exemplary embodiments, which are explained in more detail in conjunction with the drawings, wherein like reference numerals designate like components.

Brief description of the figures. Show it:

1 shows a view obliquely from above of a seat device,

FIG. 2 a shows a plan view of the seat device or on a coupling device,

FIG. 2b shows a top view of the seat device or on a coupling device of an alternative embodiment,

2c shows a sectional view through an embodiment of a linear guide for a seat half,

Figure 2d is a side view of the seat device with two seat halves of different embodiments with a carriage adjustment

FIG. 3 a shows a side view of the seat device with two seat halves of different embodiments,

3b shows a side view of the seat device with a joint,

FIG. 4 shows a tilting mechanism for a seat half,

5 shows a further embodiment for a tilting mechanism and a a return mechanism,

FIG. 6 shows a seat half with a further embodiment of a return mechanism,

7 shows a seat half with an adjustable coupling device, Figure 8 A, B and C respectively embodiments of a seat half with sensors, and

Figure 9 is a table with adjustment variants of the seat halves. Figure 10 shows an embodiment of a locking of the seat halves.

Detailed description in the figures

illustrated embodiments

Figure 1 shows schematically a seat device 1 with a foot part 2, connected to the foot part columnar intermediate piece 3 and connected to the intermediate piece 3 seat 4. The space axes XYZ of the coordinate system are chosen so that the Z axis in the column of the intermediate piece 3 points upward. The seat 4 is formed with two individual seat halves 5a, 5b, wherein the seat halves are independently movable. Between the seat 4 and the intermediate piece 3, a coupling device 6 is arranged. The coupling device 6 consists of a longitudinal member 22, cross members 21 and an element 12 which is disposed directly under each seat half. The element 12 is made of a material that stores mechanical forces in the form of a deformation and returns to its original shape after the forces have dropped. Suitable materials include rubber, foam or a gel (gel pad). Also, a training similar to a waterbed is possible. The inclusion of shear, tensile and compressive forces as well as moments ensures a three-dimensional mobility of the seat halves in the x-y-z coordinate system.

A semicylindrical conveyor extending with its axis in the Y direction. Miges element 20 is in the illustrated embodiment with the lateral surface on the cross members 21. It is firmly connected to the seat half 5a, wherein all movement possibilities, as indicated by the double arrows, but also the rotations are not affected by the spatial axes. Seat half 5b shows an alternative embodiment without an element 20. Thus, seat half 5b can rotate three-dimensionally in space, ie in the direction of all three spatial axes, as well as around all spatial axes.

A spring 17, which surrounds the column-shaped intermediate piece 3 on the outside allows a sprung sitting or an up-and-down swinging. In the intermediate piece 3, a gas pressure spring 18 is arranged for height adjustment, the release by means of a lever 19 on the underside of the coupling device 6 is adjustable. For the height adjustment and for the springs, the intermediate piece 3 is telescopically executed (not shown). Furthermore, it can be provided to arrange a pendulum joint between the intermediate piece 3 and foot part 2.

FIG. 2a shows the coupling device 6 in plan view. Here, the seat halves 5a, 5b indicated by dash-dotted lines. The two cross members 21, which extend in the x direction, are spaced apart from one another and connected to one another via a longitudinal member 22. The longitudinal member 22 is arranged directly or indirectly on the intermediate piece 3. On the cross members 21 and below the seat halves, the element 12 is arranged per seat half 5a, 5b, which extends in the y-axis direction and protrudes in the x and y direction both beyond the cross members 21 and beyond the longitudinal members 22. Depending on the rolling characteristic, a narrower element 12 can also be used. However, the width of the element 12 should be chosen such that rotation about all spatial axes and translation in each spatial direction is possible. For this purpose, the element 12 is designed as a rubber block, foam block, gel pad or fluid-filled chamber (similar to a waterbed). Also, the element 12 may consist of at least two individual parts, wherein per cross member 21 at least one element 12 per seat half is attached.

In the figures 2b to 2d embodiments of a seat half adjustment are shown. Due to the fact that the distances of the ischial tuberosities are different in humans, it is advantageous to increase the distance of the Seat halves 5a, 5b adjustably set up. For this purpose, the cross member is designed as a rail 210, on the carriage 280 are displaceable. On the carriage 280 are the respective elements 12. The setting is done by means of a suitable mechanism, such as a threaded rod - drive 281 / 280c, which varies the distance between the carriage 280 to each other. The threaded rod 281 is formed in the regions which are associated with the respective carriage 280a or 280b, with opposite pitch. The mechanics gem. Fig. 2b and 2c on the handwheel 280c, with the threaded rod 281 can be rotated. In an embodiment, not shown, a lever construction can be used, which can also be adjusted via a threaded rod. A simple electromotive or hydraulic or pneumatic adjusting device are in the expertise of the engineer.

Figure 2d shows an embodiment of the carriage 280 as Schwalben- tail guide 36, which connects the seat half 5a and the cross member 21 with each other and a translation in the x-direction allowed to vary the distance of the seat halves from each other.

FIG. 3 a shows tilting mechanisms 7 for the coupling device 6 in a lateral view or in a view of the x-z plane. Two versions A and B are shown, each with a joint 28 for a seat half 5a, 5b, both variants each having a seat half 5a, 5b, cross member 21, a longitudinal member 22, an element 12 and a coupling joint 23 between the cross member 21 and the side member 22. The joint 23 is designed as a rubber block 15 and takes on both a movement and a damping function. By interchanging longitudinal member 22 and rubber block 15, the direct attachment to the intermediate piece 3 can be replaced by an indirect.

In variant A, the joint 28 is arranged between the cross member 21 and the element 12, whereas in variant B it is arranged between the seat half 5b and the element 12. The joints 28 are formed like a cylinder. In variants, not shown, they may have a different shape, for example a spherical or another, the desired rocking movement enabling spatial form. For stability reasons, each has Seat half per cross member 21, a joint 28. The tilting mechanism 7 thus allows the seat halves 5a, 5b to rotate about the y-axis. The overall arrangement, which is reminiscent of a balance, as a whole is so mobile that the seat halves are rotatable due to the coupling joint 23 between the cross member 21 and the longitudinal member 22, so that the seat halves can move vertically in the z direction.

In this case, a movement mechanism can be a movement mechanism 16 ', 26' for setting the variable stops 16 and / or the fitting pieces 26, with which the extent of the movement possibility can be adjusted. This may be a simple spindle mechanism trade, by means of which the stops 16 up and down, or the fitting pieces 26 are more or less deeply retracted into the gap between the cross member 21 and the concave support at the end of the intermediate piece 3. In the hinge bearings shown in Figures 1 to 3 holding devices are provided, which ensure that the respective components are held together functionally and yet can perform the desired movements. These brackets are not shown in the figures.

In order to enable an independent vertical movement of the individual seat halves 5a, 5b, FIG. 4 shows how the movement in the z-direction is made possible by means of hydraulic cylinders 24. For the height adjustment or inclinations about the x-axis, a further pair of cylinders is arranged on the second cross member (not shown), so that two hydraulic cylinders per cross member and seat half ensure the desired freedom of movement. By means of the illustrated arrangement, each seat half is also rotatable about all other spatial axes. The cylinders 24 are arranged below the seat half 5a or on the element 12 and spaced apart in the x-direction. All cylinders of a seat half are connected to each other via fluid lines 11. By means of the adjusting mechanism 8, the cylinder movement or the flow of the fluid is limited, the movement of the seat half can be facilitated, made difficult or fixed. The adjustment mechanism 8 provides a fluid supply available, with the height adjustment or tilt is individually adjustable. The desired settings for the adjustment mechanism 8 are made via the lever 27. Due to the presettable and / or restrictable movement of the Seat half 5a can z. B. Pelvic malpositions can be corrected by means of the seat device 1. Alternatively, a fixed bearing can replace a pair of hydraulic cylinders of a cross member of a seat half. Although this still allows the adjustment of the slope, but no height adjustment can be made. In order to enable a dependent movement of the seat halves from each other, a connection of the fluid lines 1 1 of the individual seat halves 5a, 5b may be provided. Instead of the hydraulic cylinder can under each seat half filled with fluid, optionally conductively interconnected chamber be arranged, similar to a waterbed. FIG. 5 shows a further embodiment of a tilting mechanism 7. In contrast to FIG. 4, the hydraulic cylinders are replaced by springs 13. Although it is not possible to adjust the height of a seat half by means of the springs, the ability to tilt is realized by means of different spring strengths. In Figure 5, the fixing mechanism is also designed as a foam block 29, which is variable in hardness depending on personal discretion. By means of various shapes, degrees of hardness, widths and thicknesses, (not shown) the rotation and translation is made more difficult or easier. Also, the seating comfort is thus flowable. Due to the permanently acting spring force, the seat half is pushed back into the starting position. Consequently, the springs 13 also serve as a return mechanism 9. Furthermore, a design is possible only with springs, wherein these can be arranged at different angles between the seat surface and the cross member, as shown by way of example with spring 34.

An alternative return mechanism 9 is shown in FIG. 6. In this case, the seat half 5a is stretched over a drawstring 14 onto a circular, spherical or semi-cylindrical element 30. The drawstring 14 is guided by a through the element 30, the seat half 5a and through the cross member 21 extending bore 140. The seat half rests on the semicylindrical element 30, with the convex section facing the seat half 5a. On the underside of the cross member 21 is an adjustment device 25, by means of which the tension of the tension band 14 is adjusted. The adjusting device 25 has a cylinder with external thread 31 through which the tension band 14 is passed. The thread of the cylinder 31 is engaged by a further terer cylinder with an internal thread 32, at the lower end of which at its ends in turn reinforcements having drawstring 14 is attached. By turning the lower hollow cylinder 32 on the other cylinder 31, the distance between the Zugbandenden and thus the voltage is varied. Consequently, the force of the return mechanism 9 can be adjusted to change the position of the seat half 5a by means of the adjusting device 25.

In Fig. 7, a coupling device 6 is shown with the seat half 5a. The seat half is disposed on a rubber block 15 which is connected to a plate 33 and which allows the seat half the desired degrees of mobility. The plate 33 is located in a recess of the cross member 21 and can be sunk or raised via an adjusting device 35 in the recess. The adjusting device 35 is formed as an adjusting screw which engages in a thread which is cut in the cross member 21. By means of the retractable arrangement, the degree of rotation and the translation or the three-dimensional movement of the seat half 5a is regulated, wherein a completely recessed rubber block 15 allows no mobility and a maximum extended ensures maximum movement.

FIG. 8 shows three variants AC of the seat device according to the invention with sensors and a device for feedback. Variation A is carried out with a tilt-tilt sensor 37, which detects the position of the seat half 5a and the ischial tuberosity from the inclination. For the feedback of the seating position 21 differently colored LEDs 38 are arranged below the cross member. These light up according to the position of the seat halves. FIG. 10 shows a selection of different seat half positions. The seat surfaces in a) have a concave inclination (inwards), as a result of which the LEDs light up red (cross in FIG. 9 a)), since this leads to an approximation of the ischial tuberosities and On the other hand, the color appears green (hook in Fig. 10 b)) when the seats are horizontally or slightly outwardly (convexly) oriented, resulting in an excessively convexly inclined seating arrangement an undesired seating position, whereby the LEDs 38 light up orange to remind of a correct sitting (Figure 10 c).) In the case of the synchronous inclination of the seats, white LEDs are provided (equal sign in Fig. 10d)) the seat user at any time formed, whether informed of his sitting posture or pelvic position.

Variant B of FIG. 9 shows below the cross member 21, a speaker 39 which generates different warning tones for the above-described possibilities of seat halves. Instead of the loudspeakers, a vibration element can also be arranged, which informs the user about the seating position via the feel. Preferably, a haptic is close to, arranged on or in at least one seat half.

In variant C of FIG. 9, the seat device is connected to a computer 40 which uses software to point the user to his sitting position. The information is conveyed to the user in such a way that the screen displays how he has to behave in order to get into a better sitting position. The connection to the computer via radio technology such. B. Bluetooth, A cable connection is possible.

FIG. 10 shows an example of a detent for the movement of the seat halves relative to each other. Such a lock makes it possible to disable the mobility of the seat halves, so that the seating can be used in between by users where the mobility of various is not desired.

In the illustrated embodiment, locking seats (30 a, 301 b) are arranged under the seat halves (5 a, 5 b), which cooperate with displaceable locking rods (300). The Arretierungsaufnahmen (301a, 301 b) are arranged here in duplicate on the seat halves, but it can be provided with appropriate design only a central locking. The two locking rods (300) are displaceable by a common actuating rod (302) in the illustrated example. In the position shown, the rods are in the locking position. When the rods (300) are pulled to the right in the X-direction, the end of the locking rod (300) leaves the locking receptacle (301a), so that both seat halves (5a, 5b) are decoupled and can move freely again. Such a lock is not limited to the illustrated embodiment. Thus, if appropriate, the actuation rod can act on the locking rods via an articulated lever, thereby avoiding too far outward movement. protrude beyond the seat area to avoid.

In a simplified embodiment can be provided to use instead of a common rod assembly individual locking rods, which can be pulled out completely from Arretierungshalterungen extending over the entire width of the seat halves (not shown).

The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. So it is z. B. in the scope of the invention described, to combine the individual embodiments, so that z. B. in the embodiment of Figure 7 and hydraulic cylinder can be arranged. Also for the elements 2 in addition to rubber and the materials gel or foam can be used. Furthermore, z. B. additionally be arranged a gel pad in Figure 8, which allows a three-dimensional freedom of movement. Furthermore, the mentioned embodiments can be supplemented by the element 20. A combination of several sensors with haptic and / or acoustic and / or optical elements for displaying the seating position is also possible.

* * * * *

Claims

claims

1. seat device (1), consisting of a foot part (2), an associated with the foot part of the intermediate piece (3) and connected to the intermediate piece seat (4), which with two individual, juxtaposed seat halves (5 a, 5 b) is formed .

- Wherein the seat halves (5a, 5b) are movable independently of each other,

- Between the seat (4) and the intermediate piece (3) has a coupling device (6) is present, and

- The seat halves (5a, 5b) by means of the coupling device (6) horizontally

are translationally movable.

2. Seat device according to claim 1, characterized in that wherein at the coupling device (6) under each seat half at least one means is arranged by means of which the seat halves (5a, 5b) are translationally movable in all spatial directions and rotationally about all spatial axes.

3. Seat device according to one of the preceding claims, characterized in that the at least one means comprises at least one elastic element (12).

4. Seat device according to claim 1 or 2, characterized in that the element (12) is formed as a fluid-filled chamber or formed by hydraulic cylinders.

5. Seat device according to one of the preceding claims, characterized in that the coupling device (6) has a mechanism for adjusting the horizontal distance of the seat halves (5a, 5b) from each other.

6. Seat device according to one of the preceding claims, characterized in that the coupling device (6) has a mechanism (33, 35) for adjusting the height of the seat halves (5a, 5b).

7. Seat device according to one of the preceding claims, characterized in that the coupling device has at least one tilting mechanism (7) for at least one seat half.

8. Seating device according to the preceding claim, characterized in that by means of one of the coupling device (6) and / or on the tilting mechanism (7) arranged adjustment mechanism (8) the inclination of at least one seat half (5) is presettable and / or limited.

9. Seat device according to one of the preceding claims, characterized in that a return mechanism (9) at least one seat half (5) returns to an initial position.

10. Seat device according to one of the preceding claims, characterized in that the seat device by means of at least one sensor (37) detects the sitting position and has a device for feedback (38, 39, 40).

11. Seat device according to one of the preceding claims, characterized by variable stops (16) and / or variable fitting pieces (26) which cooperate for limiting the mobility with the cross members (21).

12. Seat device according to claim 11, characterized by a movement mechanism (16 ', 26') for adjusting the variable stops (16) and / or the fitting pieces (26).