EP0586674B1 - Active dynamic seat - Google Patents

Active dynamic seat Download PDF

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Publication number
EP0586674B1
EP0586674B1 EP93907849A EP93907849A EP0586674B1 EP 0586674 B1 EP0586674 B1 EP 0586674B1 EP 93907849 A EP93907849 A EP 93907849A EP 93907849 A EP93907849 A EP 93907849A EP 0586674 B1 EP0586674 B1 EP 0586674B1
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EP
European Patent Office
Prior art keywords
active dynamic
seat
dynamic seat
seat device
restoring
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Expired - Lifetime
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EP93907849A
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German (de)
French (fr)
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EP0586674A1 (en
Inventor
Josef GLÖCKL
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0257—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the invention relates to an active dynamic seat device the features of the preamble of claim 1.
  • seat devices have been developed that a enable so-called active dynamic sitting, in which the Back muscles and intervertebral discs always in action are.
  • This active dynamic sitting posture becomes practical in all cases achieved by the actual seat of the Seat device is held in an unstable position and possibly additionally springs in the vertical direction.
  • a seat device is known from US Pat. No. 4,974,904, consisting of a foot section and a chair-like seat section, with a hemisphere attached to the underside of the seat part is on a bearing ring at the top of the Foot part rests. Through the hemisphere, the seat part is in all directions swiveling. Between the bottom of the hemisphere and the foot part is a reset device in the form a spring attached, which a tensioner in her Traction can be adjusted.
  • This vertical suspension is according to the invention achieved by that an intermediate piece is connected between the seat part and foot part is, the reset device between the bottom the seat shell and the seat cable and the intermediate piece and finally the intermediate piece is springy the foot part sits.
  • the seat part Due to the bowl-shaped, convex downward formation of the Bottom of the seat part is storage in a simple manner the seat part, for example by means of a head part the spacer arranged ball bearing ring allows.
  • the Seat part is thus tumble, d. H. perpendicular to each other by two standing axes rotatably supported, both axes of rotation in a plane perpendicular to the vertical axis of the intermediate piece lie.
  • the actual pivot point of the seat part is thus - depending on the design of the seat part - in most cases above the actual seat.
  • the seating device Due to the free wobbling of the seat part of the invention On the one hand, the seating device is active dynamic sitting guaranteed. On the other hand, the position of the rotary or Swashpoint ensures that the seat device also from practically inexperienced people without long acclimatization can be because the balance of the invention Seat device is not as unstable as in previously known active dynamic seat devices.
  • active dynamic seat device consists of a Foot part 1, an associated intermediate piece 2 and one Seat part 3.
  • the foot part 1 has several, for example five feet 4 in order to ensure a secure position of the seat device.
  • the foot part 1 can also be any one take another form that is suitable for stability ensure the seat device, such as a slightly convex circular plate.
  • several roles can be arranged on the foot part 1 be to allow displacement of the seat device.
  • the foot part 1 also has a slightly convex bearing surface have, which also moving the Seat device facilitated by the smaller contact area.
  • a slightly convex bearing surface have which also moving the Seat device facilitated by the smaller contact area.
  • the foot part 1 In the vertical axis of the foot part 1 is a cylindrical one Part 5 of the intermediate piece 2 arranged, which in a hollow cylindrical Extension 6 of the head part 7 of the intermediate piece 2 intervenes.
  • the inside diameter of the hollow cylindrical extension 6 corresponds essentially to the outer diameter of the cylindrical part 5, so that this in the vertical direction in the hollow cylindrical extension 6 is guided.
  • a coil spring 8 is arranged between the upper wall of the hollow cylindrical extension 6 and the upper surface of the cylindrical part 5 is for resilient Forming the intermediate piece 2, a coil spring 8 is arranged. To pull off the hollow cylindrical extension 6 to prevent from the cylindrical part 5, the top or lowest turn of the coil spring 8 by not closer Fastening device shown with the upper wall of the hollow cylindrical extension 6 or the top of the cylindrical Part 5 connected.
  • the head part 7 of the intermediate piece 2 consists of several, itself arcuate upwardly extending arms 9 on the upper Ends a ring 10 is attached. On this ring 10 are in preferably equidistant distances several, in not closer shown cages rotatably mounted balls 11, which form a ball bearing for the seat part 3.
  • the seat part 3 consists of a substantially circular Plate 12, on the top of which a seat cushion 13 is arranged is.
  • the seat cushion 13 can, for example, be made of fabric Foam material exist and, if necessary, solid or detachable be connected to the plate 12.
  • the seat cushion 13 can be convex, concave, be flat or wedge-shaped. With a wedge-shaped Training should focus on the higher end of the wedge in the Seated person's back.
  • the seat cushion in a preferred embodiment have a dimensionally stable core in order to improve the shape of the seating posture desired, even under load maintain.
  • the seat shell 14 preferably has the shape of a spherical section.
  • the maximum tilt angle of the seat part 3 - preferably about 10 ° to 20 ° - is determined by the corresponding Choice of the diameter of the ring 10 depending on the shape or the radius of the seat shell 14 set.
  • the embodiment of the invention has a load 1 a reset device 15, which in the vertical axis at the bottom of the seat shell 14 or at the head part 7 attacks.
  • the reset device 15 can be a coil spring, Elastic band or other resilient element is formed and, if necessary, be pre-stressed in the neutral position. Hereby the lifting of the seat part 3 from the other seat device prevented.
  • the head part of the intermediate piece also as an open shell with im be substantially the same radius, so that the seat part 3 sliding in the head part 7 of the shell Intermediate piece 2 is stored.
  • the convex underside the seat shell 14 and / or the concave inner surface of the Headboard 7 consist of flexible but dimensionally stable material or coated with it to make a flat contact and thus ensuring a smooth tilting movement.
  • the sliding surfaces should be made of one material exist with or have a low coefficient of friction, in order to ensure a correspondingly smooth-running storage of the seat part 3.
  • FIG. 2 also consists of a foot part 1, an intermediate piece 2 and a seat part 3.
  • the foot part 1 consists essentially of a base part 20 in Form of a hollow cone section or of several, preferably five feet.
  • the base part 20 is double-walled and thus inside hollow.
  • the top ends of the inner and outer walls of the hollow cone section are in one piece with a limiter ring 21 connected.
  • the intermediate piece 2 is connected to the via a flexible element 22 Bottom of the base part 20 connected.
  • the flexible element 22 can preferably be designed as a vibrating metal.
  • the upper end of the flexible element 22 is with a lower Hollow cylinder 23 of the intermediate piece 2 connected.
  • the outer diameter of the hollow cylindrical extension 24 essentially the inner diameter of the lower hollow cylinder 23 corresponds to the Guiding the hollow cylindrical extension 24 in the vertical direction to ensure.
  • Inside the interlocking hollow cylinders is a coil spring 35 for vertical suspension of the Intermediate piece 2 arranged.
  • the coil spring 35 is there preferably with fastening devices not shown on the underside of the head part 25 and on an in lower hollow cylinder 23 arranged intermediate floor 26 attached.
  • the intermediate floor 26 also serves as a stop for the hollow cylindrical extension 24, the location of the intermediate floor 26, which may be adjustable, within to select the lower hollow cylinder 23 in a corresponding manner is.
  • the extent extends essentially to the extent of the lower hollow cylinder 23 distributes a plurality of reset devices thereon 27 on.
  • These reset devices can as shown in Fig. 2, from the circumference of the lower hollow cylinder 23 attached, flexible traction elements 28, which through an opening and a deflecting element 29 with one inside of the side walls of the base part 20 attached coil springs 30 are connected.
  • the coil springs 30 are included preferably also in the neutral position of the intermediate piece 2 biased.
  • the reset devices 27 can be formed in a different way and not inside the Base part 20 may be arranged.
  • the head part 25 consists of a hollow body, in the upper one Wall a central, substantially circular opening 31st is trained.
  • the upper wall is slightly bowl-shaped, d. H. concave upward and pointing along one imagined, concentric to the vertical axis of the intermediate piece lying circular line several balls rotatably mounted in cages 32, which form a ball bearing for the seat part 3.
  • the seat part 3 is essentially with the seat part of the embodiment in Fig. 1 identical. The only difference is in that the diameter of the plate 12 is not necessarily must be chosen larger than the upper diameter the seat pan 14 because the limitation of the wobble of the Seat part 3 through the interaction of the central opening 31 in the upper wall of the head part 25 with one on the underside the seat shell 14 arranged in the vertical axis Reset weight.
  • the reset weight 33 has this in its upper area connected to the seat shell 14 a cylindrical neck 34 which together with the inner wall the central opening 31 the wobbling movement of the seat part 3 limited.
  • the reset weight 33 In its lower area is the diameter of the reset weight 33 preferably dimensioned larger than the diameter the central opening 31, on the one hand, to lift off the seat part 3 to prevent from the headboard 25 and the other one appropriate volume to generate sufficient weight to provide.
  • the weight of the reset weight 33 must be chosen so large that the focus of the entire seat part 3 below by the balls 32 fixed horizontal level comes to lie Reset the unloaded seat part 3 to the neutral position to ensure.

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  • Chairs Characterized By Structure (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Micromachines (AREA)
  • Optical Integrated Circuits (AREA)
  • Prostheses (AREA)
  • Seats For Vehicles (AREA)

Abstract

PCT No. PCT/EP93/00760 Sec. 371 Date Feb. 24, 1994 Sec. 102(e) Date Feb. 24, 1994 PCT Filed Mar. 29, 1993 PCT Pub. No. WO93/19646 PCT Pub. Date Oct. 14, 1993An active dynamic seat has a base, an intermediate part linked to the base and a seating part linked to the intermediate part. The seating part has on its lower side a shell-shaped, downwardly convex seating bowl. The seating part is supported in the vertical direction on a bearing arranged on a head part of the intermediate part that engages the shell-shaped lower side of the seating bowl, and is mounted so as to tilt in all other directions.

Description

Die Erfindung betrifft eine aktivdynamische Sitzvorrichtung mit den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to an active dynamic seat device the features of the preamble of claim 1.

Herkömmliche Sitzmöbel sind in den meisten Fällen so konzipiert, den der Körper, insbesondere der Rücken, durch entsprechend gestaltete Sitzflächen und Lehnen in einer anatomisch möglichst günstigen Lage unterstützt wird. Obwohl derartige Sitzmöbel häufig als bequem empfunden werden, weisen diese den entscheidenden Nachteil auf, daß der Körper auf derartigen Sitzmöbeln lediglich passiv sitzt, d.h. die Rückenmuskeln werden kaum beansprucht und die Bandscheiben werden lediglich statisch "auf Druck" belastet. Dadurch führt der längere Gebrauch derartiger Sitzvorrichtungen zu einer Degeneration der Rückenmuskeln und zu einer Abnutzung der Bandscheiben. Gesundheitliche Schäden und Schmerzen im Rücken- und Hüftbereich (z.B. Ischias) sind die häufige Folge derartig statischen und passiven Sitzens.Conventional seating is designed in most cases that the body, especially the back, through accordingly designed seats and backrests in one anatomically location is supported as favorable as possible. Although such Seating furniture is often perceived as comfortable, these have the decisive disadvantage on that the body on such Seating only sits passively, i.e. the back muscles will hardly stressed and the intervertebral discs are only statically "under pressure". This leads to longer use such seat devices to degeneration of Back muscles and wear of the intervertebral discs. Health Damage and pain in the back and hip area (e.g. sciatica) are the frequent consequence of such static and passive sitting.

Aus diesem Grund wurden Sitzvorrichtungen entwickelt, die ein sogenanntes aktives dynamisches Sitzen ermöglichen, bei dem die Rückenmuskulatur und die Bandscheiben stets leicht in Aktion sind. Diese aktive dynamische Sitzhaltung wird in praktisch allen Fällen dadurch erreicht, den der eigentliche Sitz der Sitzvorrichtung in einer labilen Lage gehalten ist und ggf. zusätzlich in vertikaler Richtung federt. For this reason, seat devices have been developed that a enable so-called active dynamic sitting, in which the Back muscles and intervertebral discs always in action are. This active dynamic sitting posture becomes practical in all cases achieved by the actual seat of the Seat device is held in an unstable position and possibly additionally springs in the vertical direction.

Aus der US-4,974,904 ist eine Sitzvorrichtung bekannt, bestehend aus einem Fußteil sowie einem sesselartigen Sitzteil, wobei an der Unterseite des Sitzteils eine Halbkugel angebracht ist, die auf einem Lagerring an der Oberseite des Fußteils aufliegt. Durch die Halbkugel ist das Sitzteil in alle Richtungen schwenkbar. Zwischen der Unterseite der Halbkugel und dem Fußteil ist eine Rückstellvorrichtung in Form einer Feder angebracht, welche über einen Spanner in ihrer Zugkraft eingestellt werden kann.A seat device is known from US Pat. No. 4,974,904, consisting of a foot section and a chair-like seat section, with a hemisphere attached to the underside of the seat part is on a bearing ring at the top of the Foot part rests. Through the hemisphere, the seat part is in all directions swiveling. Between the bottom of the hemisphere and the foot part is a reset device in the form a spring attached, which a tensioner in her Traction can be adjusted.

Die Sitzvorrichtung gemäß der US-4,974,904 erlaubt zwar ein Kippen der Sitzfläche in jede Richtung, jedoch entspricht dies allein nicht der Philosophie des aktivdynamischen Sitzens. Durch das Kippen der Sitzfläche werden nur gewisse Muskelpartien im unteren Bereich des Rückens beansprucht. Die restlichen Muskeln bleiben passiv. Der Erfindung liegt daher die Aufgabe zugrunde, die Sitzvorrichtung der US-PS 4,974,904 so weiterzubilden, daß beim Sitzen sämtliche Rückenmuskeln leicht in Bewegung bleiben. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß

  • zwischen Sitzteil und Fußteil ein Zwischenstück vorgesehen ist;
  • die Vorrichtung zur Rückstellung zwischen der Unterseite der Sitzschale und dem Zwischenstück angeordnet ist und
  • das zwischenstück in vertikaler Richtung federnd auf dem Fußteil ausgebildet ist.
    • The seat device according to US Pat. No. 4,974,904 allows the seat surface to be tilted in any direction, but this alone does not correspond to the philosophy of active dynamic sitting. By tilting the seat, only certain muscles in the lower area of the back are used. The remaining muscles remain passive. The invention is therefore based on the object of developing the seat device of US Pat. No. 4,974,904 in such a way that all back muscles remain slightly in motion when sitting. This object is achieved in that
  • an intermediate piece is provided between the seat part and the foot part;
  • the device for resetting is arranged between the underside of the seat shell and the intermediate piece and
  • the intermediate piece is resilient in the vertical direction on the foot part.

    • Die wichtigste Funktion für das aktivdynamische Sitzen ist die vertikale Federung bei einer relativ geringen Federkraft. Diese vertikale Federung wird erfindungsgemäß dadurch erreicht, daß zwischen Sitzteil und Fußteil ein Zwischenstück geschaltet ist, die Rückstellvorrichtung zwischen Unterseite der Sitzschale und des Sitzeils und dem Zwischenstück angeordnet ist und zuletzt das Zwischenstück federnd auf dem Fußteil sitzt. The most important function for active dynamic sitting is vertical suspension with a relatively low spring force. This vertical suspension is according to the invention achieved by that an intermediate piece is connected between the seat part and foot part is, the reset device between the bottom the seat shell and the seat cable and the intermediate piece and finally the intermediate piece is springy the foot part sits.

    Durch die schalenförmige, nach unten konvexe Ausbildung der Unterseite des Sitzteils wird auf einfache Weise die Lagerung des Sitzteils, beispielsweise mittels eines an einem Kopfteil des Zwischenstücks angeordneten Kugellagerrings ermöglicht. Das Sitzteil ist somit taumelbar, d. h. um zwei zueinander senkrecht stehende Achsen drehbar gelagert, wobei beide Drehachsen in einer Ebene senkrecht zur vertikalen Achse des Zwischenstücks liegen.Due to the bowl-shaped, convex downward formation of the Bottom of the seat part is storage in a simple manner the seat part, for example by means of a head part the spacer arranged ball bearing ring allows. The Seat part is thus tumble, d. H. perpendicular to each other by two standing axes rotatably supported, both axes of rotation in a plane perpendicular to the vertical axis of the intermediate piece lie.

    Der eigentliche Drehpunkt des Sitzteils befindet sich somit - je nach Ausbildung des Sitzteils - in den meisten Fällen oberhalb der eigentlichen Sitzfläche.The actual pivot point of the seat part is thus - depending on the design of the seat part - in most cases above the actual seat.

    Durch die freie Taumelbarkeit des Sitzteils der erfindungsgemäßen Sitzvorrichtung ist einerseits das aktivdynamische Sitzen gewährleistet. Andererseits ist durch die Lage des Dreh- bzw. Taumelpunkts sichergestellt, daß die Sitzvorrichtung auch von praktisch ungeübten Personen ohne lange Eingewöhnungszeit verwendet werden kann, da das Gleichgewicht der erfindungsgemäßen Sitzvorrichtung nicht in dem hohen Maße labil ist, wie bei bisher bekannten aktivdynamischen Sitzvorrichtungen. Due to the free wobbling of the seat part of the invention On the one hand, the seating device is active dynamic sitting guaranteed. On the other hand, the position of the rotary or Swashpoint ensures that the seat device also from practically inexperienced people without long acclimatization can be because the balance of the invention Seat device is not as unstable as in previously known active dynamic seat devices.

    Weitere Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen.Further embodiments of the invention result from the Subclaims.

    Die Erfindung wird nachfolgend anhand in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert. In der Zeichnung zeigen:

    Fig. 1
    ein erstes Ausführungsbeispiel der erfindungsgemäßen Sitzvorrichtung;
    Fig. 2
    ein zweites Ausführungsbeispiel der erfindungsgemäßen Sitzvorrichtung und.
    The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing. The drawing shows:
    Fig. 1
    a first embodiment of the seat device according to the invention;
    Fig. 2
    a second embodiment of the seating device according to the invention and.

    Das in Fig. 1 dargestellte Ausführungsbeispiel der erfindungsgemäßen aktivdynamischen Sitzvorrichtung besteht aus einen Fußteil 1, einem damit verbundenen Zwischenstück 2 und einem Sitzteil 3.The embodiment shown in Fig. 1 of the invention active dynamic seat device consists of a Foot part 1, an associated intermediate piece 2 and one Seat part 3.

    Das Fußteil 1 weist mehrere, beispielsweise fünf Füße 4 auf, um einen sicheren Stand der Sitzvorrichtung zu gewährleisten. Selbstverständlich kann das Fußteil 1 jedoch auch jede beliebige andere Form annehmen, die dazu geeignet ist, die Standfestigkeit der Sitzvorrichtung sicherzustellen, wie beispielsweise eine leicht konvex nach oben gewölbte kreisförmige Platte. Weiterhin können am Fußteil 1 mehrere Rollen angeordnet sein, um das Verschieben der Sitzvorrichtung zu ermöglichen.The foot part 1 has several, for example five feet 4 in order to ensure a secure position of the seat device. Of course, the foot part 1 can also be any one take another form that is suitable for stability ensure the seat device, such as a slightly convex circular plate. Furthermore, several roles can be arranged on the foot part 1 be to allow displacement of the seat device.

    In einer weiteren, nicht dargestellten Ausführungsform, kann das Fußteil 1 auch eine leicht konvex nach unten gewölbte Auflagefläche aufweisen, welche ebenfalls das Verschieben der Sitzvorrichtung durch die geringere Auflagefläche erleichtert. Darüber hinaus hat sich gezeigt, daß sich eine derartige, sehr geringe konvexe Wölbung der Auflagefläche - bei einem Durchmesser des Fußteils von ca. 50 cm bis 60 cm sollte der Randbereich des Fußteils einen Abstand von ca. 0,5 cm bis 1 cm von einer ebenen Auflagefläche aufweisen - durch das hierdurch ermöglichte zusätzliche Taumeln der gesamten Sitzvorrichtung positiv auf das erwünschte Sitzverhalten auswirkt.In a further embodiment, not shown, can the foot part 1 also has a slightly convex bearing surface have, which also moving the Seat device facilitated by the smaller contact area. In addition, it has been shown that such a, very slight convex curvature of the contact surface - with a diameter of the foot part of approx. 50 cm to 60 cm should be the edge area the foot part a distance of approx. 0.5 cm to 1 cm from have a flat support surface - through this allowed additional tumbling of the entire seat device has a positive effect on the desired seating behavior.

    In der vertikalen Achse des Fußteils 1 ist ein zylindrisches Teil 5 des Zwischenstücks 2 angeordnet, welches in einen hohlzylindrischen Fortsatz 6 des Kopfteils 7 des Zwischenstücks 2 eingreift. Der Innendurchmesser des hohlzylindrischen Fortsatzes 6 entspricht dabei im wesentlichen dem Außendurchmesser des zylindrischen Teils 5, so daß dieses in vertikaler Richtung in dem hohlzylindrischen Fortsatz 6 geführt wird.In the vertical axis of the foot part 1 is a cylindrical one Part 5 of the intermediate piece 2 arranged, which in a hollow cylindrical Extension 6 of the head part 7 of the intermediate piece 2 intervenes. The inside diameter of the hollow cylindrical extension 6 corresponds essentially to the outer diameter of the cylindrical part 5, so that this in the vertical direction in the hollow cylindrical extension 6 is guided.

    Zwischen der oberen Wandung des hohlzylindrischen Fortsatzes 6 und der oberen Fläche des zylindrischen Teils 5 ist zur federnden Ausbildung des Zwischenstücks 2 eine Schraubenfeder 8 angeordnet. Um ein Abziehen des hohlzylindrischen Fortsatzes 6 vom zylindrischen Teil 5 zu verhindern, ist die oberste bzw. unterste Windung der Schraubenfeder 8 durch eine nicht näher dargestellte Befestigungsvorrichtung mit der oberen Wandung des hohlzylindrischen Fortsatzes 6 bzw. der Oberseite des zylindrischen Teils 5 verbunden.Between the upper wall of the hollow cylindrical extension 6 and the upper surface of the cylindrical part 5 is for resilient Forming the intermediate piece 2, a coil spring 8 is arranged. To pull off the hollow cylindrical extension 6 to prevent from the cylindrical part 5, the top or lowest turn of the coil spring 8 by not closer Fastening device shown with the upper wall of the hollow cylindrical extension 6 or the top of the cylindrical Part 5 connected.

    Das Kopfteil 7 des Zwischenstücks 2 besteht aus mehreren, sich bogenförmig nach oben erstreckenden Armen 9, an deren oberen Enden ein Ring 10 befestigt ist. An diesem Ring 10 sind in vorzugsweise äquidistanten Abständen mehrere, in nicht näher dargestellten Käfigen drehbar gelagerte Kugeln 11 angeordnet, welche ein Kugellager für das Sitzteil 3 bilden.The head part 7 of the intermediate piece 2 consists of several, itself arcuate upwardly extending arms 9 on the upper Ends a ring 10 is attached. On this ring 10 are in preferably equidistant distances several, in not closer shown cages rotatably mounted balls 11, which form a ball bearing for the seat part 3.

    Das Sitzteil 3 besteht aus einer im wesentlichen kreisförmigen Platte 12, auf deren Oberseite ein Sitzkissen 13 angeordnet ist. Das Sitzkissen 13 kann beispielsweise aus mit Stoff bezogenem Schaumstoffmaterial bestehen und ggf. fest oder lösbar mit der Platte 12 verbunden sein. Zur Förderung einer anatomisch günstigen Sitzhaltung kann das Sitzkissen 13 konvex, konkav, eben oder keilförmig ausgebildet sein. Bei einer keilförmigen Ausbildung sollte sich dabei das höhere Ende des Keils im Rücken der sitzenden Person befinden.The seat part 3 consists of a substantially circular Plate 12, on the top of which a seat cushion 13 is arranged is. The seat cushion 13 can, for example, be made of fabric Foam material exist and, if necessary, solid or detachable be connected to the plate 12. To promote an anatomical the seat cushion 13 can be convex, concave, be flat or wedge-shaped. With a wedge-shaped Training should focus on the higher end of the wedge in the Seated person's back.

    Weiterhin kann das Sitzkissen in einer bevorzugten Ausführungsform einen formstabilen Kern aufweisen, um die zur Verbesserung der Sitzhaltung gewünschte Form auch unter Belastung im wesentlichen aufrechtzuerhalten.Furthermore, the seat cushion in a preferred embodiment have a dimensionally stable core in order to improve the shape of the seating posture desired, even under load maintain.

    An der Unterseite der Platte 12 ist eine konvex nach unten ausgebildete Sitzschale 14 ausgebildet, welche mit ihrer unteren Fläche auf den am Ring 10 angeordneten Kugeln 11 aufliegt und auf diese Weise taumelbar gelagert ist. Die Sitzschale 14 weist dabei vorzugsweise die Form eines Kugelabschnitts auf. At the bottom of the plate 12 is a convex downward trained seat shell 14, which with its lower Surface rests on the balls 11 arranged on the ring 10 and is mounted in a wobble manner. The seat shell 14 preferably has the shape of a spherical section.

    Zur Begrenzung der Taumelbewegung des Sitzteils 3 wird der Durchmesser der Platte 12 größer gewählt als der Durchmesser des Rings 10 und der obere Durchmesser der Sitzschale 14, so daß der Ring 10 zugleich in jeder Richtung einen Anschlag für die Platte 12 bildet. Der maximale Kippwinkel des Sitzteils 3 - vorzugsweise ca. 10° bis 20° - wird dabei durch die entsprechende Wahl des Durchmessers des Rings 10 in Abhängigkeit von der Form bzw. des Radius der Sitzschale 14 festgelegt.To limit the wobble movement of the seat part 3 Diameter of the plate 12 chosen larger than the diameter of the ring 10 and the upper diameter of the seat shell 14, so that the ring 10 at the same time in any direction for a stop the plate 12 forms. The maximum tilt angle of the seat part 3 - preferably about 10 ° to 20 ° - is determined by the corresponding Choice of the diameter of the ring 10 depending on the shape or the radius of the seat shell 14 set.

    Zur Rückstellung des Sitzteils 3 in die neutrale Lage bei fehlender Belastung weist die erfindungsgemäße Ausführungsform nach Fig. 1 eine Rückstellvorrichtung 15 auf, welche in der vertikalen Achse am Boden der Sitzschale 14 bzw. am Kopfteil 7 angreift. Die Rückstellvorrichtung 15 kann dabei als Schraubenfeder, Gummiband oder sonstiges federndes Element ausgebildet und ggf. bereits in der neutralen Lage vorgespannt sein. Hierdurch wird gleichzeitig das Abheben des Sitzteils 3 von der übrigen Sitzvorrichtung verhindert.To reset the seat part 3 to the neutral position in the absence of The embodiment of the invention has a load 1 a reset device 15, which in the vertical axis at the bottom of the seat shell 14 or at the head part 7 attacks. The reset device 15 can be a coil spring, Elastic band or other resilient element is formed and, if necessary, be pre-stressed in the neutral position. Hereby the lifting of the seat part 3 from the other seat device prevented.

    Anstelle der Kugellagerung der Sitzschale 14 kann das Kopfteil des Zwischenstücks auch als nach oben offene Schale mit im wesentlichen gleichem Radius ausgebildet sein, so daß das Sitzteil 3 gleitend in dem als Schale ausgebildeten Kopfteil 7 des Zwischenstücks 2 gelagert ist. Hierzu kann die konvexe Unterseite der Sitzschale 14 und/oder die konkave Innenfläche des Kopfteils 7 aus flexiblem, aber formbeständigem Material bestehen oder damit beschichtet sein, um einen flächigen Kontakt und somit eine gleichmäßige Kippbewegung zu gewährleisten. Hierzu sollten die aufeinander gleitenden Flächen aus einem Material mit geringem Reibwert bestehen oder damit beschichtet sein, um eine entsprechend leichtgängige Lagerung des Sitzteils 3 sicherzustellen.Instead of the ball bearing of the seat shell 14, the head part of the intermediate piece also as an open shell with im be substantially the same radius, so that the seat part 3 sliding in the head part 7 of the shell Intermediate piece 2 is stored. The convex underside the seat shell 14 and / or the concave inner surface of the Headboard 7 consist of flexible but dimensionally stable material or coated with it to make a flat contact and thus ensuring a smooth tilting movement. For this the sliding surfaces should be made of one material exist with or have a low coefficient of friction, in order to ensure a correspondingly smooth-running storage of the seat part 3.

    Das in Fig. 2 dargestellte Ausführungsbeispiel der Erfindung besteht ebenfalls aus einem Fußteil 1, einem Zwischenstück 2 sowie einem Sitzteil 3. The embodiment of the invention shown in Fig. 2 also consists of a foot part 1, an intermediate piece 2 and a seat part 3.

    Das Fußteil 1 besteht im wesentlichen aus einem Basisteil 20 in Form eines Hohlkegelabschnitts oder aus mehreren, vorzugsweise fünf Füßen. Das Basisteil 20 ist doppelwandig und somit innen hohl ausgebildet. Die oberen Enden der Innen- und Außenwandungen des Hohlkegelabschnitts sind einstückig mit einem Begrenzerring 21 verbunden.The foot part 1 consists essentially of a base part 20 in Form of a hollow cone section or of several, preferably five feet. The base part 20 is double-walled and thus inside hollow. The top ends of the inner and outer walls of the hollow cone section are in one piece with a limiter ring 21 connected.

    Das Zwischenstück 2 ist über ein biegsames Element 22 mit dem Boden des Basisteils 20 verbunden. Das biegsame Element 22 kann dabei vorzugsweise als Schwingmetall ausgebildet sein.The intermediate piece 2 is connected to the via a flexible element 22 Bottom of the base part 20 connected. The flexible element 22 can preferably be designed as a vibrating metal.

    Das obere Ende des biegsamen Elements 22 ist mit einem unteren Hohlzylinder 23 des Zwischenstücks 2 verbunden. In den Hohlzylinder 23 greift ein hohlzylindrischer Fortsatz 24 des Kopfteils 25 des Zwischenstücks 2 ein, wobei der Außendurchmesser des hohlzylindrischen Fortsatzes 24 im wesentlichen dem Innendurchmesser des unteren Hohlzylinders 23 entspricht, um die Führung des hohlzylindrischen Fortsatzes 24 in vertikaler Richtung zu gewährleisten. Innerhalb der ineinandergreifenden Hohlzylinder ist eine Schraubenfeder 35 zur vertikalen Federung des Zwischenstücks 2 angeordnet. Die Schraubenfeder 35 ist dabei vorzugsweise mit nicht näher dargestellten Befestigungsvorrichtungen an der Unterseite des Kopfteils 25 sowie an einem im unteren Hohlzylinder 23 angeordneten Zwischenboden 26 befestigt. Der Zwischenboden 26 dient dabei gleichzeitig als Anschlag für den hohlzylindrischen Fortsatz 24, wobei die Lage des ggf. verstellbar ausgebildeten Zwischenbodens 26 innerhalb des unteren Hohlzylinders 23 in entsprechender Weise zu wählen ist.The upper end of the flexible element 22 is with a lower Hollow cylinder 23 of the intermediate piece 2 connected. In the hollow cylinder 23 engages a hollow cylindrical extension 24 of the head part 25 of the intermediate piece 2, the outer diameter of the hollow cylindrical extension 24 essentially the inner diameter of the lower hollow cylinder 23 corresponds to the Guiding the hollow cylindrical extension 24 in the vertical direction to ensure. Inside the interlocking hollow cylinders is a coil spring 35 for vertical suspension of the Intermediate piece 2 arranged. The coil spring 35 is there preferably with fastening devices not shown on the underside of the head part 25 and on an in lower hollow cylinder 23 arranged intermediate floor 26 attached. The intermediate floor 26 also serves as a stop for the hollow cylindrical extension 24, the location of the intermediate floor 26, which may be adjustable, within to select the lower hollow cylinder 23 in a corresponding manner is.

    Weiterhin greifen im wesentlichen in einer Höhe über den Umfang des unteren Hohlzylinders 23 verteilt an diesem mehrere Rückstellvorrichtungen 27 an. Diese Rückstellvorrichtungen können, wie in Fig. 2 dargestellt, aus am Umfang des unteren Hohlzylinders 23 befestigten, biegsamen Zugelementen 28 bestehen, welche durch eine Öffnung und ein Umlenkelement 29 mit einem im Inneren der Seitenwandungen des Basisteils 20 befestigten Schraubenfedern 30 verbunden sind. Die Schraubenfedern 30 sind dabei vorzugsweise auch in der neutralen Lage des Zwischenstücks 2 vorgespannt.Furthermore, the extent extends essentially to the extent of the lower hollow cylinder 23 distributes a plurality of reset devices thereon 27 on. These reset devices can as shown in Fig. 2, from the circumference of the lower hollow cylinder 23 attached, flexible traction elements 28, which through an opening and a deflecting element 29 with one inside of the side walls of the base part 20 attached coil springs 30 are connected. The coil springs 30 are included preferably also in the neutral position of the intermediate piece 2 biased.

    Selbstverständlich können die Rückstellvorrichtungen 27 jedoch auch in anderer Weise ausgebildet sein und nicht im Inneren des Basisteils 20 angeordnet sein.Of course, the reset devices 27 can be formed in a different way and not inside the Base part 20 may be arranged.

    Das Kopfteil 25 besteht aus einem Hohlkörper, in dessen oberer Wandung eine zentrale, im wesentlichen kreisförmige Öffnung 31 ausgebildet ist. Die obere Wandung ist geringfügig schalenförmig, d. h. konkav nach oben geformt und weist entlang einer gedachten, konzentrisch zur vertikalen Achse des Zwischenstücks liegenden Kreislinie mehrere in Käfigen drehbar gelagerte Kugeln 32 auf, welche ein Kugellager für das Sitzteil 3 bilden.The head part 25 consists of a hollow body, in the upper one Wall a central, substantially circular opening 31st is trained. The upper wall is slightly bowl-shaped, d. H. concave upward and pointing along one imagined, concentric to the vertical axis of the intermediate piece lying circular line several balls rotatably mounted in cages 32, which form a ball bearing for the seat part 3.

    Das Sitzteil 3 ist im wesentlichen mit dem Sitzteil der Ausführungsform in Fig. 1 identisch. Der einzige Unterschied besteht darin, daß der Durchmesser der Platte 12 nicht notwendigerweise größer gewählt werden muß als der obere Durchmesser der Sitzschale 14, da die Begrenzung der Taumelbewegung des Sitzteils 3 durch das Zusammenwirken der zentralen Öffnung 31 in der oberen Wandung des Kopfteils 25 mit einem an der Unterseite der Sitzschale 14 in der vertikalen Achse angeordneten Rückstellgewichtes erfolgt. Das Rückstellgewicht 33 weist hierzu in seinem oberen mit der Sitzschale 14 verbundenen Bereich einen zylindrischen Hals 34 auf, der zusammen mit der Innenwandung der zentralen Öffnung 31 die Taumelbewegung des Sitzteils 3 begrenzt.The seat part 3 is essentially with the seat part of the embodiment in Fig. 1 identical. The only difference is in that the diameter of the plate 12 is not necessarily must be chosen larger than the upper diameter the seat pan 14 because the limitation of the wobble of the Seat part 3 through the interaction of the central opening 31 in the upper wall of the head part 25 with one on the underside the seat shell 14 arranged in the vertical axis Reset weight. The reset weight 33 has this in its upper area connected to the seat shell 14 a cylindrical neck 34 which together with the inner wall the central opening 31 the wobbling movement of the seat part 3 limited.

    In seinem unteren Bereich ist der Durchmesser des Rückstellgewichtes 33 vorzugsweise größer bemessen als der Durchmesser der zentralen Öffnung 31, um einerseits das Abheben des Sitzteils 3 vom Kopfteil 25 zu verhindern und andererseits ein entsprechendes Volumen zur Erzeugung einer ausreichenden Gewichtskraft bereitzustellen. Das Gewicht des Rückstellgewichtes 33 muß in jedem Fall so groß gewählt werden, daß der Schwerpunkt des gesamten Sitzteils 3 unterhalb der durch die Kugeln 32 festgelegten, horizontalen Ebene zu liegen kommt, um eine Rückstellung des unbelasteten Sitzteils 3 in die neutrale Lage zu gewährleisten.In its lower area is the diameter of the reset weight 33 preferably dimensioned larger than the diameter the central opening 31, on the one hand, to lift off the seat part 3 to prevent from the headboard 25 and the other one appropriate volume to generate sufficient weight to provide. The weight of the reset weight 33 must be chosen so large that the focus of the entire seat part 3 below by the balls 32 fixed horizontal level comes to lie Reset the unloaded seat part 3 to the neutral position to ensure.

    Claims (13)

    1. An active dynamic seat device, consisting of a foot part (1), an intermediate part (2) connected to the foot part (1) and a seat part connected to the intermediate part (2), wherein the seat part (3) is formed on its underside as a dish-like, downwardly convex seat shell (14), is supported in the vertical direction and is mounted to be able to tilt in any other direction, and is coupled to a device for restoring it to a neutral position wherein the restoring device is disposed between the underside of the seat shell and the intermediate part (2) and the intermediate part (2) is made resilient in the vertical direction on the foot part (1).
    2. An active dynamic seat device according to claim 1 characterized in that the seat shell (14) has the shape of a portion of a sphere.
    3. An active dynamic seat device according to claim 1 or 2, characterized in that the head part (7, 25) of the intermediate part (2) has a concave shape corresponding to the underside of the seat shell (14).
    4. An active dynamic seat device according to any of claims 1 to 3, characterized in that the restoring device consists of an elastic element arranged in the axis of the intermediate part.
    5. An active dynamic seat device according to claim 4, characterized in that the elastic element consists of a helical spring (15).
    6. An active dynamic seat device according to claim 4 or 5, characterized in that the elastic element is pre-tensioned.
    7. An active dynamic seat device according to claim 1, characterized in that the restoring device is formed as a restoring weight (33) arranged centrally on the underside of the seat shell (14) and which has such a shape and such a weight that the centre of gravity of the system consisting of the seat part (3) and the restoring weight (33) lies below the plane in which the seat part is mounted.
    8. An active dynamic seat device according to claim 7, characterized in that the intermediate part (2) comprises a cylindrical or hollow cylindrical extension (6, 24) connected to the head part (7, 25) and a lower hollow cylinder (23) or cylindrical part (5) connected to the foot part (1), which parts engage telescopically in one another and in which a helical spring (8, 35) is arranged.
    9. An active dynamic seat device according to any of the preceding claims, characterized in that the intermediate part (2) is connected to the foot part (1) through a connecting element (22) which can yield in any direction.
    10. An active dynamic seat device according to claim 9, characterized in that the connecting element (22) is formed as a bonded rubber pad.
    11. An active dynamic seat device according to claim 9 or 10, characterized in that the foot part (1) comprises a stop in the form of a closed frame (21) at a predetermined height above the ground, restricting the sideways movement of the intermediate part (2).
    12. An active dynamic seat device according to claim 10 or 11, characterized in that the foot part (1) has several restoring devices (27) distributed over the periphery of the intermediate part (2) and engaging thereon.
    13. An active dynamic seat device according to claim 12, characterized in that the restoring devices (27) comprise tension elements (28), deflecting elements (29) and spring elements (30) and in that at least parts of the restoring devices (27) are arranged in a base part (20) of the foot part (1) made at least partially hollow to this end.
    EP93907849A 1992-03-27 1993-03-29 Active dynamic seat Expired - Lifetime EP0586674B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE4210097A DE4210097C2 (en) 1992-03-27 1992-03-27 Active dynamic seat device
    DE4210097 1992-03-27
    PCT/EP1993/000760 WO1993019646A1 (en) 1992-03-27 1993-03-29 Active dynamic seat

    Publications (2)

    Publication Number Publication Date
    EP0586674A1 EP0586674A1 (en) 1994-03-16
    EP0586674B1 true EP0586674B1 (en) 1998-08-05

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    Application Number Title Priority Date Filing Date
    EP93907849A Expired - Lifetime EP0586674B1 (en) 1992-03-27 1993-03-29 Active dynamic seat

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    US (1) US5590930A (en)
    EP (1) EP0586674B1 (en)
    JP (1) JPH07503392A (en)
    AT (1) ATE169189T1 (en)
    DE (1) DE4210097C2 (en)
    ES (1) ES2121999T3 (en)
    WO (1) WO1993019646A1 (en)

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    Publication number Publication date
    DE4210097C2 (en) 2000-05-31
    ATE169189T1 (en) 1998-08-15
    ES2121999T3 (en) 1998-12-16
    DE4210097A1 (en) 1993-09-30
    WO1993019646A1 (en) 1993-10-14
    JPH07503392A (en) 1995-04-13
    EP0586674A1 (en) 1994-03-16
    US5590930A (en) 1997-01-07

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