EP1123025B1 - Seat - Google Patents

Abstract

The seat incorporates devices which force at least one point of the seat surface (1) to move continuously and cyclically periodically in at least two movement directions, whereby the one period is greater, preferably twice as great, as the other period. The seat surface is movable around a variable rotary point (3). The seat surface in its angle of inclination is movable both in the seat direction and also laterally. Leg supports are movable with the seat surface and incorporate at least one lower leg support, preferably with a lateral support surface.

Description

The invention relates to a seat, in particular a seat with a preferably stable foot, at least one backrest and with a seat.

There are several attempts to seat an ergonomic posture to promote, to design, in particular in connection with Office chairs or seats for PC workstations. There are, for example rocking chair-like structures, seats with knee braces and seatballs. However, all these seats lead to relatively cramped Sitting postures, because on the one hand stabilizes the moving seat on the other hand unusual body parts, such as shins, Cruciate ligaments and toe tips, sensitive in an unfamiliar way become.

In addition, there are seats with forced-motion seats, like them For example, in DE 33 24 788 A1 in EP 0 311 993 A2 and in EP 0 574 073 A1 are disclosed. The seats shown there are but relatively limited in their Sitzflächenbewegung and usually allow only a shift of the seat in one Direction, such as up and down in EP 0 311 993 A2 or right-left-rotating in EP 0 574 073 A1. Only the DE 33 24 788 A1 discloses a seat with a seat in two Movement directions is displaced, this by lifting organs, the can lift the seat, is accomplished and here the Seat parallel to itself raised and lowered or laterally and can be tilted all around.

It is an object of the present invention, compared to a seat with to create a particularly ergonomic moving seat.

As a solution, the invention proposes a seat with the features of Patent claim 1 before.

Different as in all known seats needs in such a seat of the Do not cramp the body to hold the seat in place. The in itself also in the known seats desirable muscle work becomes thereby ensuring that the body follow the movement of the seat got to. Here, the human body is from an early age on used to following such a predetermined movement, for example being carried by the mother, walking or riding. As is known, such forced movements are relaxing and can also serve therapeutic purposes. The moving seat should do not vibrate, but a pleasant, quiet and even movement. Additional vibration movements would be conceivable.

It is understood that the amplitude of this movement is adapted that it is possible to keep the upper body almost calm. By the Continuing consequences of seat movement at almost stationary Upper body are stressed a lot of muscles while sitting, without them cramping. The benefits of forcibly continuous and cyclically moving seat follow in particular when the seat or the seat are designed such that they are upright Promote, if not enforce, posture. Such seats are known per se, for example, it can also borrowed from a saddle shape Seat find use. In particular, the seat can be like this be designed that an upright posture with straight back and indicated hollow cross is taken, in which the thigh relieved of pressure.

Such an upright posture can be with a suitable seat choice ensure that the seat in its inclination angle is relocated. Advantageously, this shift can occur both in Sitting direction as well as sideways. It is also possible in particular that the seat can be easily rotated with respect to the horizontal. Likewise, it may be provided to shift the seat in its height.

There are provided according to the invention means which at least one point of Seat forcibly continuous and cyclic in at least two Movement directions move periodically, the one period larger, preferably twice larger than the other period.

In this way can with relatively simple means one step movement simulating movement, such as when riding occurs in the change or Paßgang or when worn. In particular, it is possible that for carrying out such movements the seat is tilted accordingly.

In addition, the seat can one, preferably sturdy, foot, at least one backrest and a seat which surround one Pivot is displaceable in its inclination angle. By such Arrangement is independent of the other features of the seat, possible, on the one hand a body relieving movement during the Sitting and on the other hand an ergonomic posture to ensure a workplace or work surface. Thus, the fixed foot ensures that a central position, for example, before a screen and a keyboard can not be left and nevertheless a slight body movement - whether executed or forcibly moved - is performed.

In particular, it is also possible, the fulcrum, preferably in his Distance to the seat and / or in his distance to the foot, too relocate. As a result, on the one hand, the inclination angle change and on the other hand, the seat height can be influenced. The movement can also be designed such that a pivot point can not be defined and only the inclination of the seat can be changed accordingly.

In particular, it is also possible, the displacement of the pivot point in Depend on the displacement of the seat, so that the Movement for the seat to be chosen relatively freely can.

Regardless of whether the tilt angle change the seat free or Forcibly done, the seat can be resiliently mounted. This can for example, by a spring element between a seat surface mount and the foot is effective, done. It is also possible to have one provide appropriate, resilient guide for the seat. By a Such suspension jerky movements are avoided, the on the one hand interfere with a smooth movement and to Cramping and on the other hand would result in the seated, subconscious leveling movement suddenly and unwillingly becomes aware and so on a distraction from a concentrated activity.

It is understood that the seat is not necessarily a physical existing pivot point must be relocatable. Rather, one can also suitable guidance of the seat be provided, this by a shifted virtual pivot. Such a guide can, for example be provided directly under the seat itself, so that the entire Foot beneath the seat in a known manner as a normal seat foot, optionally also with rollers or the like may be formed.

In particular, the latter arrangement can also be used as a footrest or be configured as a standing surface instead of a seat that directly on the Ground is forcibly moved continuously and cyclically. In this case, of course, all, as described above Movements for this footstool or standing surface can be realized and it There are similar benefits. The seat according to the invention is suitable especially for office chairs. In such an application allows a stable foot in a particularly suitable way that a person in Correct posture with respect to a work surface or on a Computer remains in prescribed position. In particular, the Invention are also realized in motor vehicles or car seats. Here it can be particularly at long rides fatigue successfully prevent. By switching off the movement in emergency situations In this case a risk potential can be reduced. Likewise, a Seat according to the invention in railway operator stands or in aircraft Find use and show the same advantages. It is beyond that possible to use a seat according to the invention as a lying aid when he designed flat or integrated into a lounger. In a Such an application, a seat according to the invention a pressure ulcer counteract. An inventive seat can also be in the form of a Armchairs be provided.

The seat or the footrest or the standing surface can, as already described above, back and forth, up and down and also be moved laterally. In particular, however, are also tumbling Gyro movements (such as in a hula or belly dance) or staggering high-low gyroscopic movements (like a roller coaster) possible. In addition, the seat but also a U-shaped, page-alternating high-low movement, as in a horse in the crotch, or a rocking movement, as in a dromedary in the Paßgang, To run. Also a movement similar to a dolphin jump is possible, where the seat is over an arch forward and then straight is moved back. It is understood that other movements are conceivable, in particular, according to the well-being of the user or but also from a medical point of view can be selected.

To ensure the desired movements, all known drives, guides and gear find use. So can a desired movement, for example by one in a groove guided scenery pin are generated. But it is also possible that To drive seat through an appropriate transmission linkage. In particular, an angle heel arrangement can be provided by which depending on the exact configuration and arrangement of Angle lever - can realize a variety of forms of movement. A Such bell crank assembly builds this relatively simple and It may be due to excessive use of bearings or bearings be waived. Likewise, camshafts, eccentrics or suitable, circumferential guideways influencing the movement sequence serve. By suitable combination of gear elements or several Driven or similar can also be a switching between different Movement patterns done.

Preferably, the seat is inclined or formed such that a Person in normal sitting position an angle of over 90 ° between Upper body and thigh has. This applies preferably for all operating inclinations of the seat and ensures a simple upright sitting. For this purpose, the seat surface opposite the ground also be slightly inclined forward.

On the seat can be provided with the seat displaceable legrests be. In particular, these legrests can at least one lower leg support, i.e. a lower leg supporting device have. Preferably, such a lower leg support has a laterally supporting support surface on. Such a laterally supporting support surface promotes an ergonomically advantageous posture and allows alike that a sturdy seat on the moving seat is possible. With the lower leg support can be a corresponding footrest be connected.

As desired, these legrests can be arranged so that they allow a kind of ladies seat or a kind of manor. Also one Crossed leg posture or a slight cross-legged fit are conceivable.

It is understood that such leg supports also independent of the other features of the seat advantageously a stable seat and thus an ergonomically advantageous sitting position, can serve.

In addition, the seat comprises at least one backrest, the support surface regardless of the seat at least along a concave Movement path is displaced. Here the term of the concave trajectory of a trajectory, which is around at the Backrest supporting body is designed to run around.

Such a movable independently of the seat backrest whose Degree of freedom preferably substantially perpendicular to a vertical Level is directed, on the one hand allows a resting seat that the Back of a sitter pleasant within a certain Travel can be moved. With a moving seat, On the other hand, the back and thus the upper body can easily little follow the movement of the seat, without causing tension in the lower vortex area comes.

Such, displaceable along a concave trajectory Backrest is also independent of the other features of the seat advantageous. In particular, it is also possible to use this inventive Basic idea as a back bed or for a headrest or for a Use pillows. Here are the guideway or management organs corresponding horizontal, for example on a bed or in a Lounger, supported or arranged. Again, there is the advantage that the head or the upper body are pleasantly displaced or rotated can without having to be raised. In particular, such Construction as a pillow in a bed or on a couch Use find, in which case the concave trajectory is aligned around the head. The headrest or the pillow can also include a shoulder or back support.

The backrest may also be subject to forced movement or be formed drivable. In addition, the backrest can be stepless, especially in the inclination to be adjustable. This is true in particular in connection with the use of such Backrest in beds or beds.

The seat may have armrests that are springy and independent of the Seat or backrest displaceable at least in the horizontal direction are arranged. Here, the suspension can be both horizontal and be provided vertically. Due to the horizontal displacement is a supported by a large radius. The suspension serves one hand pleasant edition and on the other hand a reset in one Starting position. Such armrests are also independent of the rest Features of the seat advantageous.

The seat can be provided with heating and / or ventilation be. Of course, this also applies to a backrest or the other assemblies of a seat assembly, such as headrest, armrests, Footrests or similar.

At the seat, a sensor for controlling the proper movement of a Seated be provided. This can, for example, a force transducer or be a force gauge. It is also possible, only to check the energy absorption of the seat drive. Through a Such sensor for controlling the proper movement of a seated person can be checked whether the sitter is "positive" or whether he is only lethargic the movement of the seat follows. It is desirable that the sitter is positive and, of its own accord, but unconsciously sits in the given motion of the seat follows. It is assumed that in a sluggish sitting the from the seat forces to perform the movement, are correspondingly larger. Accordingly, the Energy absorption of the drive increase.

The seat can also provide means for changing the frequency and / or amplitude of the movement, so that the movement of the Seat can be adapted to the type of sitting. In a positive Sitting, for example, the frequency and / or amplitude of the movement be reduced to a minimum. On the other hand, the sitter begins "sluggish" to sit, so the amplitude and / or the corresponding Frequency changed to this way to a positive sitting to stimulate. In addition, with sluggish sitting a signal, like a Horn signal, or music sound. It is by such an arrangement especially in aircraft or car seats or in driver's cabs of lanes possible to reduce the risk of falling asleep in the Falling asleep to slow a transition from positive to sitting Sitting happens.

Also, such a seat is suitable for therapeutic purposes. In particular, in this case, a drive with individual linear actuators, which are arranged offset from each other, be provided. The staggered Arrangement, for example, in the known in flight simulators Art respectively. Actuators or pneumatic actuators come in particular or hydraulic drives in question. Here, the seat especially the remobilization of persons after operations of the lower one Extremities, strengthening the back and pelvic muscles and a variable, flexible and thus not one-sided loading of the intervertebral discs and the digestive support in completely and partially paralyzed or to serve the therapy of autistic or hyperactive persons.

Fig. 1

einen ersten Stuhl mit Sitz in schematischer Schnittdarstellung,

Fig. 2

einen zweiten Stuhl mit erfindungsgemäßem Sitz in schematischer Seitenansicht,

Fig. 3

den Stuhl nach Figur 2 in Rückansicht,

Fig. 4

den Bewegungsmechanismus der Rücklehne des Stuhls nach Figur 2 und 3 bzw. einer Kopfstütze in schematischer Darstellung,

Fig. 5

einen dritten Stuhl mit Sitz in schematischer Schnittdarstellung,

Fig. 6

einen vierten Stuhl mit Sitz in schematischer Schnittdarstellung,

Fig. 7

den Stuhl nach Fig. 6 in einem schematischen Horizontalschnitt,

Fig. 8

einen fünften Stuhl mit Sitz in einem schematischen Querschnitt,

Fig. 9

den Stuhl nach Fig. 8 in einem schematischen Längsschnitt,

Figur 10

einen sechsten Stuhl ähnlich Fign. 6 und 7 mit Fußstütze in schematischer Frontansicht,

Figur 11

den Stuhl nach Fig. 10 mit ausgeklappter Fußstütze in einer Seitenansicht,

Figur 12

verschiedene Sitzpositionen auf dem Stuhl nach Fign. 10 und 11,

Figur 13

einen siebten Stuhl ähnlich dem nach Fign. 6 und 7 mit erfindungsgemäßem Sitz mit Rücklehne und mit Armstützen in einer Frontansicht, wobei die Armstützen in einer Schreibposition befindlich sind,

Figur 14

den Stuhl nach Fig. 13 in einer Seitenansicht,

Figur 15

den Stuhl nach Fign. 13 und 14 in ähnlicher Darstellung wie Fig. 13, wobei die Armlehnen und eine Rücklehne in einer Ruheposition sind und

Figur 16

den Stuhl nach Fig. 15 in einer Seitenansicht.

Further advantages, objects and features of the present invention will be explained with reference to the following description of the appended drawing, in which by way of example several embodiments of a seat are shown. In the drawing show:

Fig. 1

a first chair with seat in a schematic sectional view,

Fig. 2

a second chair with inventive seat in a schematic side view,

Fig. 3

the chair according to FIG. 2 in rear view,

Fig. 4

the movement mechanism of the backrest of the chair according to Figures 2 and 3 and a headrest in a schematic representation,

Fig. 5

a third chair with seat in a schematic sectional view,

Fig. 6

a fourth chair with seat in a schematic sectional view,

Fig. 7

the chair according to Fig. 6 in a schematic horizontal section,

Fig. 8

a fifth chair with seat in a schematic cross section,

Fig. 9

the chair according to Fig. 8 in a schematic longitudinal section,

FIG. 10

a sixth chair similar to Fign. 6 and 7 with footrest in a schematic front view,

FIG. 11

the chair of FIG. 10 with unfolded footrest in a side view,

FIG. 12

different seating positions on the chair according to Fign. 10 and 11,

FIG. 13

a seventh chair similar to that of Fign. 6 and 7 with seat according to the invention with backrest and with armrests in a front view, wherein the armrests are in a writing position,

FIG. 14

the chair according to FIG. 13 in a side view,

FIG. 15

the chair after Fign. 13 and 14 in a similar representation as FIG. 13, wherein the armrests and a backrest are in a rest position and

FIG. 16

the chair of Fig. 15 in a side view.

In the chair shown in Figure 1 is a seat 1 to a between a stable Stuhifuß 2 and the seat 1 provided Fulcrum 3 displaceable in its inclination angle. This is done by ensures that a support rod 4, on which the seat 1 is rigid is fixed by means of a support plate 5 is supported on the foot 2. Here, the support plate 5 is movably supported on the foot 2, so that the seat in a suitable manner, both in the seat direction as also laterally, is displaceable.

The support plate 5 is by means of two elastic rings 6 'and 6 "on the Supported foot 2, wherein the support disk 5 on the lower elastic Ring 6 'is supported and from above via the second elastic ring 6 " is held. As is immediately apparent, this is already sufficient Arrangement to a displaceable in accordance with the invention seat 1, which has an upright rest position.

The support rod 4 further has a height adjustment 7 and a Tilt adjustment 8 on, so that the seat to individual needs can be adapted.

As can be seen from Figure 1, the support rod 4 could also be rigid with the Foot 2 be connected, if a corresponding movement mechanics is provided immediately below the seat 1, which is a shift to the then virtual pivot 3 allows.

In the embodiment shown in Figure 1 is on the seat surface 1 opposite end of the support rod 4, a counter-plate. 9 intended. This counter-plate 9 is used by its inertial mass as Damping element, so that the movement of the seat 1 is not too can be done easily. In addition, on the counter plate 9 Spring elements 10 are provided, on the one hand a vibration limitation in support of the elastic rings 6 'and 6 "serve and on the other hand prevent the seat 1 from rotating about the support bar 4.

While the assemblies described so far a free Displacement of the seat 1 to ensure the pivot point 3, comprises the embodiment shown in FIG. 1 further comprises a drive 11, which is operatively connected via an eccentric with the counter-plate 9. Here, the transmission is selected such that the seat is a U-shaped, performs page alternating motion.

As immediately apparent, it is also possible, the support rod 4 am Support base of the foot 2 and movable in the support plate 5 to to store. By profiling the bottom of the foot 2 can then be a U-shaped, page-alternating high-low movement, as in a horse in the Step, be achieved.

The seat 1 is here chosen such that it is an upright Posture with straight back and implied hollow cross enforces the thighs are relieved of pressure. This upright posture as well as the passive consequences of the active forced movement or a appropriate compensation movement convey to the sitter A sense of security without being drowsy affects one Muscle cramping and promote blood circulation of the entire body as well as digestion. The well cushioned movement requires a soft and gentle, changing load on the Band washers. Here, the amplitude of the movement is chosen such that Head, shoulders and upper body are easily kept calm can.

A U-shaped, page-alternating movement is especially in the In connection with a rigid backrest advantageous because at one such movement the buttocks at each side alternation of the Backrest is removed, so that a case running movement of the Buttocks and the corresponding subsequent movement of the back one Reduced friction on a backrest and so not to tension or tension with the backrest leads. This is especially at for use with car seats, aircraft seats or train driver stands significant.

The chair shown in Figures 2 and 3 substantially corresponds to the in Figure 1 shown. In the former, however, are still on the seat 1 two lower leg supports 12 provided by means of brackets 12 'at the seat 1 are attached. The lower leg supports 12 point on the one hand to the side supporting, outwardly directed support surfaces, the allow a seat similar to a rider's seat. In addition, include the supports 12 each also a footrest, so that the entire lower body the moving seat 1 can follow, while in the in Figure 1 illustrated embodiment, the feet rest on the ground.

By means of the brackets 12 ', the supports 12 can also be adjusted in this way be that a seat similar to a Reiterdamensitz or a lighter Cross-legged is possible.

The chair according to FIGS. 2 and 3 has a backrest according to the invention, the support surface 13 independent of the seat 1 along a concave movement path is displaced. For this purpose, the backrest means a foot 14 fixed fixed with respect to the chair foot 2 and the Support surface 13 via a guide 15 with respect to the foot 14 displaced. As can be seen in particular from Figure 4, the guide 15 comprises a concave curved guide rail 17, along which a carriage 16 with the support surfaces 13 is running. As can also be understood from this figure, The term concave trajectory refers to the support surface 13 or on a body resting on this support surface. One in figure 4 construction can also as a shoulder, neck or Headrest or use as a pillow. In particular, too a combination of head, neck, shoulder and / or back support conceivable. Here, the shape of the support surface of the head movement or adapted to a body movement and the guide rail suitable supported.

Thus, the support surface in the head area on the sides much thicker be formed so that in a body rotation of the head in one comfortable position relative to the then underlying shoulder supported becomes.

The support surface 13 of the backrest is also along a diagonal guide 15 'resiliently displaceable, so that optionally the Backrest or the support surface 13 of the seat surface movement can follow.

In addition, the chair of Figures 2 and 3, a support arm 18th on, on the one hand, lighting body 19 and on the other Forearm supports 20 are attached. The lighting fixtures are like this Aligned that one on this chair at a computer workstation Sitting person (shown in dotted lines) is not dazzled.

The armrests 20 are formed as angled half-shells and means Suspensions 21 resiliently attached to the support arm 18. Here are the hangers 21 continue as shoulder rituals apart on the Support arm 18 attached. In this way, the supports do not disturb 20 when they are unused. The supports 20 are also suspended resiliently, wherein a pressure or speed-dependent locking provided is, so that the armrest 20 are used as a support when getting up can if it is charged jerkily.

As can be seen from Figure 2, the person in a rest position on put on the support surface 13 of the backrest, this can also be the seat be placed in a resting position. In particular, it is possible in This resting position to leave the arms in the forearm supports 20, so that they remain in a relaxed position while the person is resting. By remaining in the forearm support ensures that a uniform circulation of the body is maintained, especially that not excessive blood in the arms sags.

It is understood that such resilient armrests also from below or can be resiliently positioned from the rear or front and also independent of the other features of the seat or the chair are advantageous.

Here, the long suspensions 21 allow a large area, in which the arms are free to move supported. This can be done Avoid neck tension effectively.

The chair may also include a lumbar support or a neck support, the are designed independently of the seat 1. In particular, these can also be similar to the backrest along be displaced a concave trajectory.

In the chair shown in Figure 5 are the movement of the Seat 1 'necessary facilities immediately below the same in mounted on three footrests 2 'supported housing 2 " is the seat 1 'corresponding wobble on a support 4' by means of two Rubber rings 6 'and 6 "and a plurality of support springs 10' attached encompasses a corresponding holder of the seat 1 'a support plate 5' on the support 4 ', above or below which the rubber rings 6' and 6 " are arranged. This allows the chair on its seat 1 ' be raised or offset and it is nevertheless a Movability of the invention ensured. The support springs 10 'serve this also a resetting of the seat against an undesirable Rotation of the same.

The rubber rings 6 ', 6 "could also by an outside in the edge region circumferential rubber ring or a hose can be realized.

In the embodiment shown in Figure 5, the inventive forced movement of the seat 1 'by a driven drive ring 11 'ensures which of the support 4' rotates and which spacers 11 "drives on one Guideway 11 '"with the drive ring 11' revolve 11 "'is profiled so that a desired tilt angle change follows.

As can be seen directly from FIG. 5, instead of the supports 2 ', they can also be a central support leg, as with a well-known desk chair use Find. It is also possible to dispense entirely with the supports 2 ' and the arrangement on the ground or on a normal seat to arrange. Located on the floor or on a low stool, This arrangement can be used as a pedestal when standing, especially at standing activities on machines or the like, or else as Serve footstool. In particular, it is also possible such a footstool to combine with the seats shown in Figures 1 to 3.

The embodiment shown in Figure 5 is particularly suitable for a chair / upright combination, in which the seat of a Sitting position by means of a gas spring or similar lifting means in one Stehsitzposition is moved. In the sitting position then a person can take a position for paperwork or the like while the Standing seat position for activities that are also performed while standing can, is used. The standing-sitting position can be offset in such a way the seating position be provided that a sitting especially without obstruction by a footrest or a low-lying Worktop is possible.

By replacing the drive elements, in particular the guideway 11 "'in the arrangement of Figure 5 on particularly simple Way various motion sequences are realized. So too another drive conceivable. In particular, a drive can also staggered linear drives, as they for example used in flight simulators.

Also, the chairs shown in Figures 6 to 9 have a seat 1 " or 1 "', which is displaceable about a pivot point However, is continuously with the movement of the seat 1 "or 1" ' shifted so that the movement is better in general complexity too describe is.

While in the embodiment shown in Figures 6 and 7, the Movement of the seat 1 "most likely the movement of a saddle corresponds to a horse's back, corresponds to the movement of the seat 1 "' in the case of FIG. 8 and 9 illustrated embodiment em ehesten the Movement of a saddle on a Paßgänger.

Both chairs are characterized by a forcibly continuous and cyclically moving seat, wherein means are provided, the one Shift the pivot point according to the movement of the seat surface. All after the On the other hand, seats or devices known from the prior art have a fixed pivot point, which optionally over again lockable Actuators can be displaced in height, during the rotary motion but remains in one place.

In addition, both chairs have means that at least one point the seat 1 "or 1" 'forcibly continuously and cyclically in move at least two directions of movement periodically, the Period in one direction of movement greater than the period in the other Movement direction is. Preferably, the one period is exactly twice as big as the other period. This can be a swing or Wippbewegung be achieved, as they last in the in Figures 6 to 9 described embodiments is realized.

To realize this, that shown in Figures 6 and 7 Embodiment on the foot 2 '"two rocker arms 30, which the Seat 1 "is supported by a ball joint, seat 1" is In addition, by means of a support 31 also via a ball joint supported. The support 31 has a gas spring for height adjustment and to increase the seating comfort and is in a spherical shell 32, preferably made of nylon or a similar sliding material, stored.

To increase the comfort of the chair also has additional cushion 33, which are rigidly connected to the foot 2 '".

The rocker arms are guided by a guided by rollers 34 Bowden cable 35, which is continuously cyclically forced by a motor 36 is driven, and about return springs 37. By the cyclical Lifting the knee lever, the seat 1 "on the one hand with a certain frequency shifted from right to left, the exact Position of the seat 1 "by the geometry of rocker arms 30 and support 31 is determined. With double frequency, however, the seat 1 ", as immediately apparent, in addition to forward and backward or also shifted in height. This creates a rocking motion similar to that of a saddle on a horse, which is an extremely soothing, yes even therapeutic, has effect.

It is understood that instead of the ball joints and other joints, such as for example toggle joints with enough clearance, or sufficient stiff springs can be used.

The embodiment illustrated in FIGS. 8 and 9 is for realization however, two rigidly interconnected, eccentric and one Angle mounted ball bearing washers 41, which below the Seat 1 "'are arranged and support these 41 are driven in rotation by a drive 42 and on a shaft 43 stored. In addition, the seat 1 "'is not in one secured guide against unintentional tilting.

By rotating the ball bearing blocks 41, the seat surface 1 "'becomes one rocking movement that stimulates the movement of a saddle on a passgear corresponds. In this case, the seat 1 'moves at' a half turn of the ball bearing washers 41 from one side to others, as shown in Figure 9. At the same time the seat 1 "'staggers during this movement due to the eccentricity of the ball bearing washers 41 by a twisted position, in particular from FIG. 8 seen. This tumbling motion is twice the frequency as the Page movement up.

Instead of the mechanical arrangements shown, others may be used Actuators find use. In particular, the means that the Relocate pivot point according to the seat surface movement, or the Means, the at least one point of the seat 1 "or 1" 'forcibly continuously and cyclically in at least two directions of movement move periodically, even control devices, such as electric or electronic controls, and corresponding controlled actuators or other positioning options for the seat and its inclination angle include.

The embodiment illustrated in FIGS. 10 to 12 corresponds to FIG essentially that shown in Figures 6 and 7. Again, here is one Chair with a seat 1 "provided, which is slightly inclined forward and performs a movement that is essentially a movement in the Equivalent to riding. This movement can be followed by one of the arrangement Figures 6 and 7 corresponding arrangement allows.

In addition, this chair has a recess 50 in which a leg / foot rest 51 is stored. The leg / footrest points at least one upper support surface 52 for supporting a Lower leg or both lower leg and at least one lower Support surface 53 as a footrest, as this particular in Figure 12 is shown. In this particular embodiment, each is for each Leg an upper and a lower support surface 52, 53 are provided. in this connection can, as shown in the present embodiment, the upper Support surface 52 with respect to the lower support surface 53 at least in Subareas be arranged at an angle.

As can be seen in particular from Figures 10 and 12, the leg / footrest 51, a mirror plane 55 '(numbered in FIG. 10). In this Mirror plane 55 'is the leg / footrest 51 with respect to the chair foot 2' " or the seat 1 "movable and - if desired - in one Angle position lockable (see Figure 12). This can for example be realized by a rod arranged in the leg / footrest 51, which stands on the ground and on which the actual leg / footrest 51 is stored lockable. But there are also other brackets or Guides for the leg / footrest 51 conceivable. If necessary, also a Mobility of the leg / foot rest 51 provided in a different direction be.

As can be seen, in this chair is only a leg / footrest 51st provided, which is suitable for both legs. But it can also be a Leg / footrest be provided, the only one leg or only one Foot supports. This can, for example, a legrest in a vehicle only the leg with which an accelerator pedal is operated supported. This support then suitably engages the outside of the leg at.

In this embodiment, the leg / footrest 51 is with the chair connected via connecting means 54, which an opening or closing allow the leg / foot rest 51 in the recess 50. It is the other way also conceivable that the leg / footrest 51 separately from the chair is arranged. Likewise, the connection means 54 a different kind a relative movement, such as a displacement or the like between Allow leg / footrest and the rest of the chair.

To facilitate folding out of the leg / footrest 51 is at the Bottom a handle 55 is provided, as this figure 10 shows.

Also, the chair shown in Figures 13 to 16 substantially corresponds the chair shown in Figures 6 and 7. In the in Figures 13 to 16 is according to the invention a backrest 13, along a concave guideway 15 is displaced, provided. The guideway 15 is on Holding arms 56 attached to a boom 57 of the foot 2 "'over an articulated connection 58 are connected to the foot 2 '" may be means for locking the backrest and / or stops which limit their mobility, be provided. In addition, the Backrest 13 also provided at a height of the guide 15 Pivoting pivot. It is understood that a Such a design of the backrest also independent of the rest Characteristics of the chair is advantageous.

At the upper ends of the support arms 56 are also spring arms 59th provided on which armrests 60 and armrests 61 attached are. The spring arms 59 are in common with the backrest 13 between a writing position (see Figures 13 and 14) and a rest position (see Figures 15 and 16) displaced.

In the writing position, the backrest 13 is inclined forward and supports the back only slightly, whereby by the U-shaped movement the buttocks a seated person is moved slightly forward, if one Side movement is present, so that just a burden on the back avoided by a relative movement between the back and the backrest 13 is, even if the backrest 13 would be rigidly arranged, like this for example, in a motor vehicle the case. Through the concave Trajectory of the back, this plays in this chair but no Role.

In addition, the spring arms 59 are in the writing position to the outside arched and embrace the arms and the armrests 60 from the outside. By the suspension, the person can the arms nevertheless to different Moving positions without leaving the armrests, so that the supporting function is nevertheless preserved.

In the rest position, the spring arms 59 about a pivot point to the twisted upper support arms 56 and lie on these. This will shortened the spring travel, so that the armrests 60 are mounted rigidly. They can be used in this way as supports for getting up.

In addition, then the armrests 61 are in a use position and a person can sit back comfortably and relaxed. It understands itself that such a separate embodiment of the armrests 60th regardless of the seat 1 "and the backrest 13 may be advantageous can. This is especially true for those above the shoulders of one seated person provided pivot points as well as within limits movable arrangement of the armrests 60 in a writing position.

In addition, a headrest may be provided on the chair. This is preferably not directly connected to the backrest but suitably fastened separately to the chair. Likewise Also lateral supports that attack under the armpits, or a stomach or Lumbar support and / or a chin or neck support be provided. The abdominal support or the lumbar support can be similar to the back support be formed displaced with a concave trajectory.

Claims (22)

1. Seat having a base (2) and a back support fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1"') forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
2. Seat according to claim 1, characterized in that the back support includes a supporting surface (13) that is displaceable over a guide (15) relative to the base (2) independently of the seating surface.
3. Seat having a base (2) and a lumbar support fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1"') forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
4. Seat according to claim 3, characterized in that the lumbar support includes a supporting surface that is displaceable over a guide relative to the base (2) independently of the seating surface.
5. Seat having a base (2) and a shoulder support fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1'") forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
6. Seat according to claim 5, characterized in that the shoulder support includes a supporting surface that is displaceable over a guide relative to the base (2) independently of the seating surface.
7. Seat having a base (2) and a neck-rest fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1"') forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
8. Seat according to claim 7, characterized in that the neck-rest includes a supporting surface that is displaceable over a guide relative to the base (2) independently of the seating surface.
9. Seat having a base (2) and a chin support and/or head-rest fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1"') forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
10. Seat according to claim 9, characterized in that the head-rest includes a supporting surface that is displaceable over a guide relative to the base (2) independently of the seating surface.
11. Seat having a base (2) and a stomach support fixed stationary relative to the base (2) and with a seating surface (1, 1', 1", 1"') forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
12. Seat according to claim 11, characterized in that the stomach support includes a supporting surface that is displaceable over a guide relative to the base (2) independently of the seating surface.
13. Seat having a base (2) and lateral supports that support under the armpits fixed stationary relative to the base (2) and with a seating surface (1, 1', 1" . 1'") forcibly moved continuously and cyclically, wherein means are provided to forcibly move at least one point of the seating surface (1, 1', 1", 1"') continuously and cyclically in at least two directions of motion periodically, characterized in that the period of one direction of motion is larger than the period of the other direction of motion.
14. Seat according to one of the claims 1 to 13, characterized in that the larger period is twice as large as the other period.
15. Seat according to any of claims 1 to 14 wherein means are provided that forcibly move at least one point of the seating surface (1, 1', 1", 1'") about a centre of motion (3) continuously characterized in that the centre of motion (3) is alterable.
16. Seat according to claim 15, characterized in that the centre of motion (3) is altered depending on the displacement of the seating surface (1, 1', 1", 1"') about the centre of motion (3).
17. Seat according to any of claims 1 to 16, characterized in that the seating surface (1, 1', 1", 1"') is displaceable in its angle of inclination in the sitting direction as well as laterally.
18. Seat according to any of claims 1 to 17, characterized in that the seating surface (1, 1', 1", 1'") is displaceable in the sitting direction forward and backwards as well as sideways.
19. Seat according to any of claims 1 to 18, characterized in that it includes at least one arm support (20) that is displaceable resiliently and independently of the seating surface (1, 1', 1", 1"') and/or the back support continuously at least in the horizontal direction.
20. Seat according to any of claims 1 to 19, characterized in that at least one leg support includes at least one lower leg support (12) displaceable with the seating surface (1, 1', 1", 1"') by means of mounting plate (12'), preferably with a supporting surface supporting from the side.
21. Seat according to any of claims 1 to 19, characterized in that a leg/foot support (51) displaceable independently of the seating surface (1, 1', 1", 1"') which is fixed stationary relative to the base (2) by means of connecting devices (54) includes at least one footrest (53) and one lower leg support (52) whose supporting surface preferably supports from the side, that are displaceable over a guide relative to the base (2"').
22. Use of the seat according to any of the preceding claims 1 to 21 with an office chair, a motor vehicle seat, a train driver's cab, an aeroplane seat, a therapeutic seat or armchair, a seat with castors or the like, as a reclining aid, a footstool or as a stand.

Images