EP0705549A1 - Hollow object used as a seat support - Google Patents

Hollow object used as a seat support Download PDF

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Publication number
EP0705549A1
EP0705549A1 EP95114982A EP95114982A EP0705549A1 EP 0705549 A1 EP0705549 A1 EP 0705549A1 EP 95114982 A EP95114982 A EP 95114982A EP 95114982 A EP95114982 A EP 95114982A EP 0705549 A1 EP0705549 A1 EP 0705549A1
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EP
European Patent Office
Prior art keywords
hollow body
seat
body according
area
range
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95114982A
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German (de)
French (fr)
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EP0705549B1 (en
Inventor
Anton Obermaier
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Gebrueder Obermaier OHG
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Gebrueder Obermaier OHG
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Publication of EP0705549A1 publication Critical patent/EP0705549A1/en
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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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/021—Detachable or loose seat cushions
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S5/00—Beds
    • Y10S5/925—Highly frictional material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S5/00—Beds
    • Y10S5/944—Beds with upstanding firm massaging projections

Definitions

  • the present invention relates to a hollow body for use as a seat pad with a support area, a seating area and a transition area arranged between them.
  • Seat pads are generally known, which are pillow-shaped (seat cushions). These seat pads are filled with elastic or resilient filling material, e.g. with springs, foam or the like, and on the other hand designed as an air cushion, the rigidity of the seat pad being achieved by a gas volume enclosed in the seat pad.
  • the object of the present invention is to provide a seat pad with a simple To provide design and handling which, when used, bring about an ergonomically advantageous sitting position or posture, in particular dynamic sitting, for the person sitting on it.
  • a hollow body for use as a seat pad with a support area, a seat area and a transition area arranged therebetween, the support area and the seat area being essentially flat and the transition area being bead-shaped.
  • a hollow body according to the present invention leads to a dynamic sitting of the person sitting on the hollow body, whereby tension, permanent malposition, nerve irritation and pain conditions in the lumbar and spinal region are avoided or partially. be diminished or cured.
  • the shape of the hollow body according to the invention can also be used in publicly accessible areas, since there is no risk of rolling away due to the flat contact surface.
  • the hollow body according to the invention can also serve as a support for known chairs with a backrest, whereby e.g. An expensive substructure or support structure that is indispensable for the seat balls is no longer necessary and the hollow body is thus used without any problems.
  • the hollow body according to the present invention preferably comprises a hollow body skin made of a plastic which preferably contains, in particular plasticized, polyvinyl chloride (PVC).
  • PVC polyvinyl chloride
  • the hollow body skin has a thickness in the range from 1 to 10 mm, further preferably from 2 to 8 mm and most preferably from 4 to 6 mm.
  • the hollow body skin has protruding projections in predetermined areas, which preferably have a thickness in the range from 0.05 to 0.5 mm, further preferably from 0.1 to 0.4 mm and most preferably from 0 , 2 to 0.3 mm.
  • the hollow body has a round or oval shape in cross-section (and essentially parallel to the plane of the seat or support area).
  • the hollow body further preferably has a height which is 1/10 to 1/2, further preferably 1/8 to 1/3 and most preferably 1/5 to 1/4 of the maximum width of the hollow body.
  • the hollow body has a maximum width in the range from 20 to 60 cm, further preferably from 30 to 50 cm and most preferably from about 35 cm.
  • the hollow body is preferably filled with a fluid, which is preferably air or a liquid, particularly preferably water.
  • the projections (42, 42 ', 42'', 44, 44', 44 '') have a thickness in the range from 0.2 to 0.3 mm. It is preferred that the hollow body has a height (H) which is 1/10 to 1/2 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a height (H) which is 1/8 to 1/3 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a height (H) which is 1/5 to 1/4 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a maximum width (D) in the range from 20 to 60 cm. It is preferred that the hollow body has a maximum width (D) in the range from 30 to 50 cm.
  • the hollow body has a maximum width (D) of approximately 35 cm. It is preferred that the hollow body has a maximum width (D) which is adapted to the size of the seat surface (120) of ordinary chairs. It is preferred that the hollow body is filled with a fluid. It is preferred that the fluid is air. It is preferred that the fluid is a liquid. It is preferred that the liquid is water.
  • FIGS. 1 and 2 in the form of a hollow body or seat disk or hollow disk comprises a flat seat area 10, a flat support area 20 and a bead-shaped transition area arranged between them and forming the transition between the seat area 10 and the support area 20 30.
  • the hollow body with its support area 20 for example rests on a chair (not shown)
  • the shape of the support area 20 conforms to the shape of the chair because of the elasticity of the hollow body skin 42, which is generally flat.
  • the transition area 30 is partially irregularities that may occur.
  • the bead-shaped or rounded transition area 30 transmits the load to the support area 20, which rests on the chair and is supported thereon.
  • the bead-shaped transition area can in particular have a semicircular or semi-elliptical cross section or taper.
  • the hollow body skin 40 which is formed in particular from two interconnected, preferably identical molded parts 40 'and 40' '(FIG. 2), in particular from plasticized polyvinyl chloride (PVC), has projecting projections 42, 42', 42 '' on the Seat area 10 and / or projecting projections 44, 44 ', 44' 'on the support area 20. These formations serve on the one hand to stiffen the hollow body, and on the other hand to increase the slip resistance of the seating and / or the support area and also for the aesthetic design of the hollow body itself.
  • PVC plasticized polyvinyl chloride
  • the hollow body further comprises a valve 50 through which the pressure in the interior or the internal volume of the hollow body can be adjusted.
  • the hollow body has good tensile strength, in particular because of the low internal pressure or low elongation of the hollow body skin.
  • the hollow body skin also has protruding projections in the transition region.
  • the hollow body has a maximum dimension, in particular a width D, which is adapted to the seat of a chair and is approximately 35 cm.
  • the hollow body is preferably a round or oval structure in plan view, as a result of which an advantageously good "dynamic sitting behavior" of the person sitting on the hollow body is achieved.
  • the height H of the hollow body is in particular about 8 to 10 cm and is in particular such that when the hollow body is used on a chair with a backrest, the person sitting on it can lean comfortably on the backrest of the chair. This requirement advantageously allows use, for example, in schools, where it is prescribed to reduce the risk of injury to the children that the chairs should have adequate backrests.
  • FIG. 3 schematically shows the movements generated by a person 110, 110 'sitting on the hollow body 100, 100'. The movements are exaggerated for illustration.
  • the elastic configuration of the skin of the hollow body 100, 100 ' which is formed in particular from plasticized polyvinyl chloride, causes, as with the known seat balls, that part of the forces generated by the load on the person in shear forces or to the surface 120 of the chair essentially parallel forces are implemented. These shear forces cause slight tilting or rocking movements (indicated by the double arrow B in FIG. 3) of the person 110, 110 'sitting on the hollow body.
  • the hollow body 100 can deform under this various load (see under 100 ') and follows the movements of the person.

Abstract

A hollow body for a seating support has a flat laying side (20) and seating side (10), with a cambered surface (30) round the body between the top and bottom. The body has a skin (40) of plastic, pref. softened PVC. The hollow body has a round or oval shape.

Description

Die vorliegende Erfindung betrifft einen Hohlkörper für die Benutzung als Sitzunterlage mit einem Auflagebereich, einem Sitzbereich und einem dazwischen angeordneten Übergangsbereich.The present invention relates to a hollow body for use as a seat pad with a support area, a seating area and a transition area arranged between them.

Es sind allgemein Sitzunterlagen bekannt, welche kissenförmig (Sitzkissen) ausgestaltet sind. Diese Sitzunterlagen sind einerseits mit elastischem bzw. federndem Füllmaterial gefüllt, z.B. mit Federn, Schaumstoff oder dgl., und andererseits als Luftkissen ausgestaltet, wobei die Steifigkeit der Sitzunterlage durch ein in der Sitzunterlage eingeschlossenes Gasvolumen erreicht wird.Seat pads are generally known, which are pillow-shaped (seat cushions). These seat pads are filled with elastic or resilient filling material, e.g. with springs, foam or the like, and on the other hand designed as an air cushion, the rigidity of the seat pad being achieved by a gas volume enclosed in the seat pad.

Diese bekannten Sitzunterlagen führen jedoch zu einer Sitzstellung, welche ergonomisch inkorrekt ist und zu Dauerfehlbelastungen des Körpers führt. Verkrampfungen, Verspannungen oder gar bleibende gesundheitliche Schäden (z.B. Verkrümmungen der Wirbelsäule) können dadurch verursacht werden.However, these known seat pads lead to a sitting position which is ergonomically incorrect and leads to permanent incorrect strain on the body. This can cause cramping, tension or even permanent health damage (e.g. curvature of the spine).

Es ist andererseits bekannt, daß Sitzbälle eine ergonomisch vorteilhafte Sitz-Stellung herbeiführen, indem der Körper zu andauernden Ausgleichbewegungen (dem sogenannten "dynamischen Sitzen") angeregt wird.On the other hand, it is known that sitting balls bring about an ergonomically advantageous sitting position by stimulating the body to perform constant compensatory movements (the so-called "dynamic sitting").

Wegen ihrer Form brauchen solche Sitzbälle eine Unterlage bzw. Haltekonstruktion, damit sie nicht wegrollen. Staatliche Institutionen, z.B. Schulen, haben insbesondere wegen der Wegrollgefahr solcher Sitzbälle deren Einsatz in öffentlich zugänglichen Bereichen untersagt. Falls eine Rückenlehne für den Sitz erwünscht ist, ist die Haltekonstruktion aufwendiger und somit teurer.Because of their shape, such seat balls need a base or support structure so that they do not roll away. State institutions, e.g. Schools, in particular because of the risk of such seatballs rolling away, have prohibited their use in publicly accessible areas. If a backrest is required for the seat, the support structure is more complex and therefore more expensive.

Aufgabe der vorliegenden Erfindung ist es, eine Sitzunterlage mit einer einfachen Ausgestaltung und Handhabung bereitzustellen, welche beim Gebrauch eine ergonomisch vorteilhafte Sitzstellung bzw. -haltung, insbesondere ein dynamisches Sitzen, der darauf sitzenden Person herbeiführt.The object of the present invention is to provide a seat pad with a simple To provide design and handling which, when used, bring about an ergonomically advantageous sitting position or posture, in particular dynamic sitting, for the person sitting on it.

Diese und weitere Aufgaben werden durch einen Hohlkörper für die Benutzung als Sitzunterlage mit einem Auflagebereich, einem Sitzbereich und einem dazwischen angeordneten Übergangsbereich gelöst, wobei der Auflagebereich und der Sitzbereich im wesentlichen flach sind und der Übergangsbereich wulstförmig ist.These and other objects are achieved by a hollow body for use as a seat pad with a support area, a seat area and a transition area arranged therebetween, the support area and the seat area being essentially flat and the transition area being bead-shaped.

Ein Hohlkörper gemäß der vorliegenden Erfindung führt zu einem dynamischen Sitzen der auf dem Hohlkörper sitzenden Person, wodurch Verspannungen, Dauerfehlbelastungen, Nervenreizungen und Schmerzzustände im Lenden- und Wirbelsäulenbereich vermieden oder z.T. gemindert oder geheilt werden.A hollow body according to the present invention leads to a dynamic sitting of the person sitting on the hollow body, whereby tension, permanent malposition, nerve irritation and pain conditions in the lumbar and spinal region are avoided or partially. be diminished or cured.

Zusätzlich zu diesen orthopädischen Vorteilen kann der erfindungsgemäße Hohlkörper wegen seiner Formgestaltung auch in öffentlich zugänglichen Bereichen eingesetzt werden, da durch die flache Auflagefläche keine Wegrollgefahr besteht.In addition to these orthopedic advantages, the shape of the hollow body according to the invention can also be used in publicly accessible areas, since there is no risk of rolling away due to the flat contact surface.

Der erfindungsgemäße Hohlkörper kann wegen seiner Ausgestaltung weiterhin als Auflage für bekannte Stühle mit Rückenlehne dienen, wodurch z.B. eine für die Sitzbälle unabdingbare teure Unterkonstruktion bzw. Tragestruktur nicht mehr notwendig ist und der Hohlkörper wird somit umproblematisch eingesetzt. Es wird außerdem insbesondere ein "Nachrüsten" der schon vorhandenen Sitzmöglichkeiten bzw. Stühle möglich, da insbesondere die maximale Abmessung des Hohlkörpers bevorzugt an die Größe der Sitzfläche gängiger Stühle angepaßt ist.Due to its design, the hollow body according to the invention can also serve as a support for known chairs with a backrest, whereby e.g. An expensive substructure or support structure that is indispensable for the seat balls is no longer necessary and the hollow body is thus used without any problems. In addition, it is particularly possible to "retrofit" the existing seating or chairs, since in particular the maximum dimension of the hollow body is preferably adapted to the size of the seating surface of common chairs.

Bevorzugt umfaßt der Hohlkörper gemäß der vorliegenden Erfindung eine Hohlkörperhaut aus einem Kunststoff, welcher bevorzugt, insbesondere weichgemachtes, Polyvinylchlorid (PVC) enthält.The hollow body according to the present invention preferably comprises a hollow body skin made of a plastic which preferably contains, in particular plasticized, polyvinyl chloride (PVC).

In einer bevorzugten Ausführungsform der vorliegenden Erfindung weist die Hohlkörperhaut eine Stärke im Bereich von 1 bis 10 mm, weiterhin bevorzugt von 2 bis 8 mm und am bevorzugtesten von 4 bis 6 mm auf.In a preferred embodiment of the present invention, the hollow body skin has a thickness in the range from 1 to 10 mm, further preferably from 2 to 8 mm and most preferably from 4 to 6 mm.

In einer weiterhin bevorzugten Ausgestaltung des erfindungsgemäßen Hohlkörpers weist die Hohlkörperhaut in vorbestimmten Bereichen vorspringenden Anformungen auf, welche bevorzugt eine Stärke im Bereich von 0,05 bis 0,5 mm, weiterhin bevorzugt von 0,1 bis 0,4 mm und am bevorzugtesten von 0,2 bis 0,3 mm haben.In a further preferred embodiment of the hollow body according to the invention, the hollow body skin has protruding projections in predetermined areas, which preferably have a thickness in the range from 0.05 to 0.5 mm, further preferably from 0.1 to 0.4 mm and most preferably from 0 , 2 to 0.3 mm.

In einer bevorzugten Ausführungsform weist der Hohlkörper im Querschnitt (und zwar im wesentlichen parallel zur Ebene des Sitz- oder Auflagebereiches) eine runde oder ovale Form auf. Der Hohlkörper weist weiterhin bevorzugt eine Höhe auf, welche 1/10 bis 1/2, weiterhin bevorzugt 1/8 bis 1/3 und am bevorzugtesten 1/5 bis 1/4 der maximalen Breite des Hohlkörpers beträgt.In a preferred embodiment, the hollow body has a round or oval shape in cross-section (and essentially parallel to the plane of the seat or support area). The hollow body further preferably has a height which is 1/10 to 1/2, further preferably 1/8 to 1/3 and most preferably 1/5 to 1/4 of the maximum width of the hollow body.

In einer weiterhin bevorzugten Ausgestaltung der vorliegenden Erfindung weist der Hohlkörper eine maximale Breite im Bereich von 20 bis 60 cm, weiterhin bevorzugt von 30 bis 50 cm und am bevorzugtesten von etwa 35 cm auf.In a further preferred embodiment of the present invention, the hollow body has a maximum width in the range from 20 to 60 cm, further preferably from 30 to 50 cm and most preferably from about 35 cm.

Der Hohlkörper ist bevorzugt mit einem Fluid gefüllt, welches bevorzugt Luft oder eine Flüssigkeit, besonders bevorzugt Wasser, ist.The hollow body is preferably filled with a fluid, which is preferably air or a liquid, particularly preferably water.

Bevorzugt ist, daß die Anformungen (42, 42', 42'', 44, 44', 44'') eine Stärke im Bereich von 0,2 bis 0,3 mm aufweisen. Bevorzugt ist, daß der Hohlkörper eine Höhe (H) aufweist, welche 1/10 bis 1/2 der maximalen Breite (D) des Hohlkörpers beträgt. Bevorzugt ist, daß der Hohlkörper eine Höhe (H) aufweist, welche 1/8 bis 1/3 der maximalen Breite (D) des Hohlkörpers beträgt. Bevorzugt ist, daß der Hohlkörper eine Höhe (H) aufweist, welche 1/5 bis 1/4 der maximalen Breite (D) des Hohlkörpers beträgt. Bevorzugt ist, daß der Hohlkörper eine maximale Breite (D) im Bereich von 20 bis 60 cm aufweist. Bevorzugt ist, daß der Hohlkörper eine maximale Breite (D) im Bereich von 30 bis 50 cm aufweist.It is preferred that the projections (42, 42 ', 42'', 44, 44', 44 '') have a thickness in the range from 0.2 to 0.3 mm. It is preferred that the hollow body has a height (H) which is 1/10 to 1/2 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a height (H) which is 1/8 to 1/3 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a height (H) which is 1/5 to 1/4 of the maximum width (D) of the hollow body. It is preferred that the hollow body has a maximum width (D) in the range from 20 to 60 cm. It is preferred that the hollow body has a maximum width (D) in the range from 30 to 50 cm.

Bevorzugt ist, daß der Hohlkörper eine maximale Breite (D) von etwa 35 cm aufweist. Bevorzugt ist, daß der Hohlkörper eine maximale Breite (D) aufweist, welche an die Größe der Sitzfläche (120) gewöhnlicher Stühle angepaßt ist. Bevorzugt ist, daß der Hohlkörper mit einem Fluid gefüllt ist. Bevorzugt ist, daß das Fluid Luft ist. Bevorzugt ist, daß das Fluid eine Flüssigkeit ist. Bevorzugt ist, daß die Flüssigkeit Wasser ist.It is preferred that the hollow body has a maximum width (D) of approximately 35 cm. It is preferred that the hollow body has a maximum width (D) which is adapted to the size of the seat surface (120) of ordinary chairs. It is preferred that the hollow body is filled with a fluid. It is preferred that the fluid is air. It is preferred that the fluid is a liquid. It is preferred that the liquid is water.

Weitere Aufgaben, Vorteile und Merkmale der vorliegenden Erfindung werden aus der folgenden beispielhaften Beschreibung eines bevorzugten Ausführungsbeispiels hervorgehen, unter Bezugnahme auf die beigefügte Zeichnung.

Fig. 1
ist eine perspektivische Ansicht eines Ausführungsbeispiels des Hohlkörpers gemäß der vorliegenden Erfindung;
Fig. 2
ist eine Schnittansicht entlang der Linie A-A in Fig. 1; und
Fig. 3
ist eine schematische Darstellung des Sitzverhaltens auf dem Ausführungsbeispiel von Fig. 1.
Further objects, advantages and features of the present invention will become apparent from the following exemplary description of a preferred embodiment with reference to the accompanying drawings.
Fig. 1
is a perspective view of an embodiment of the hollow body according to the present invention;
Fig. 2
is a sectional view taken along the line AA in Fig. 1; and
Fig. 3
is a schematic representation of the seating behavior on the embodiment of FIG. 1.

Die in Fig. 1 und 2 dargestellte Ausführungsform der vorliegenden Erfindung in Form eines Hohlkörpers bzw. Sitzscheibe bzw. Hohlscheibe umfaßt einen flachen Sitzbereich 10, einen flachen Auflagebereich 20 und einen dazwischen angeordneten, den Übergang zwischen dem Sitzbereich 10 und dem Auflagebereich 20 bildenden wulstförmigen Übergangsbereich 30. Wenn der Hohlkörper mit seinem Auflagebereich 20 z.B. auf einem (nicht dargestellten) Stuhl aufliegt, paßt sich die Form des Auflagebereiches 20 wegen der Elastizität der Hohlkörperhaut 42 an die Form des Stuhles an, welche im allgemeinen flach ist. Der Übergangsbereich 30 gleicht z.T. eventuell auftretende Unregelmäßigkeiten aus.The embodiment of the present invention shown in FIGS. 1 and 2 in the form of a hollow body or seat disk or hollow disk comprises a flat seat area 10, a flat support area 20 and a bead-shaped transition area arranged between them and forming the transition between the seat area 10 and the support area 20 30. If the hollow body with its support area 20, for example rests on a chair (not shown), the shape of the support area 20 conforms to the shape of the chair because of the elasticity of the hollow body skin 42, which is generally flat. The transition area 30 is partially irregularities that may occur.

Sobald eine Person auf dem Hohlkörper sitzt, paßt sich der Sitzbereich 10 an die Anatomie der Person an. Der wulstförmige bzw. abgerundete Übergangsbereich 30 überträgt die Belastung auf den Auflagebereich 20, welcher auf dem Stuhl aufliegt und sich darauf abstützt. Der wulstförmige Übergangsbereich kann insbesondere einen halbrunden oder halb-elliptischen Querschnitt aufweisen oder spitz zulaufen.As soon as a person sits on the hollow body, the seating area 10 adapts to the anatomy of the person. The bead-shaped or rounded transition area 30 transmits the load to the support area 20, which rests on the chair and is supported thereon. The bead-shaped transition area can in particular have a semicircular or semi-elliptical cross section or taper.

Die Hohlkörperhaut 40, welche insbesondere aus zwei miteinander verbundenen, bevorzugt identischen Formteilen 40' und 40'' (Fig. 2), insbesondere aus weichgemachtem Polyvinylchlorid (PVC), gebildet ist, weist vorspringende Anformungen 42, 42', 42'' auf dem Sitzbereich 10 und/oder vorspringende Anformungen 44, 44', 44'' auf dem Auflagebereich 20 auf. Diese Anformungen dienen einerseits zur Versteifung des Hohlkörpers, und andererseits zur Erhöhung der Rutschfestigkeit des Sitz- und/oder des Auflagebereiches sowie auch zur ästhetischen Ausgestaltung des Hohlkörpers an sich.The hollow body skin 40, which is formed in particular from two interconnected, preferably identical molded parts 40 'and 40' '(FIG. 2), in particular from plasticized polyvinyl chloride (PVC), has projecting projections 42, 42', 42 '' on the Seat area 10 and / or projecting projections 44, 44 ', 44' 'on the support area 20. These formations serve on the one hand to stiffen the hollow body, and on the other hand to increase the slip resistance of the seating and / or the support area and also for the aesthetic design of the hollow body itself.

Der Hohlkörper umfaßt weiterhin ein Ventil 50, durch welches der Druck im Innenraum bzw. das Innenvolumen des Hohlkörpers eingestellt werden kann. Der Hohlkörper weist insbesondere wegen des niedrigen Innendrucks bzw. einer geringen Dehnung der Hohlkörperhaut eine gute Reißfestigkeit auf.The hollow body further comprises a valve 50 through which the pressure in the interior or the internal volume of the hollow body can be adjusted. The hollow body has good tensile strength, in particular because of the low internal pressure or low elongation of the hollow body skin.

In einer nicht dargestellten Ausführungsform der vorliegenden Erfindung weist die Hohlkörperhaut auch in dem Übergangsbereich vorspringende Anformungen auf.In an embodiment of the present invention, not shown, the hollow body skin also has protruding projections in the transition region.

Der Hohlkörper weist eine maximale Abmessung, insbesondere eine Breite D, auf, welche der Sitzfläche eines Stuhls angepaßt ist und etwa 35 cm beträgt. Bevorzugt ist der Hohlkörper ein in der Draufsicht rundes oder ovales Gebilde, wodurch ein vorteilhaft gutes "dynamisches Sitzverhalten" der auf dem Hohlkörper sitzenden Person erreicht wird.The hollow body has a maximum dimension, in particular a width D, which is adapted to the seat of a chair and is approximately 35 cm. The hollow body is preferably a round or oval structure in plan view, as a result of which an advantageously good "dynamic sitting behavior" of the person sitting on the hollow body is achieved.

Die Höhe H des Hohlkörpers beträgt insbesondere etwa 8 bis 10 cm und ist insbesondere derart, daß wenn der Hohlkörper auf einem Stuhl mit Rückenlehne benutzt wird, die darauf sitzende Person sich bequem an die Rückenlehne des Stuhles lehnen kann. Dieses Erfordernis erlaubt vorteilhaft den Einsatz z.B. in Schulen, in denen es zur Herabsetzung der Verletzungsgefahr der Kinder vorgeschrieben ist, daß die Stühle hinreichende Rückenlehnen haben sollen.The height H of the hollow body is in particular about 8 to 10 cm and is in particular such that when the hollow body is used on a chair with a backrest, the person sitting on it can lean comfortably on the backrest of the chair. This requirement advantageously allows use, for example, in schools, where it is prescribed to reduce the risk of injury to the children that the chairs should have adequate backrests.

Fig. 3 stellt schematisch die durch eine auf dem Hohlkörper 100, 100' sitzende Person 110, 110' erzeugten Bewegungen dar. Die Bewegungen sind zur Veranschaulichung übertrieben dargestellt.3 schematically shows the movements generated by a person 110, 110 'sitting on the hollow body 100, 100'. The movements are exaggerated for illustration.

Die elastische Ausgestaltung der Haut des Hohlkörpers 100, 100', welche insbesondere aus weichgemachtem Polyvinylchlorid gebildet ist, bewirkt, wie auch bei den bekannten Sitzbällen, daß ein Teil der durch die Belastung der Person erzeugten Kräfte in Scherkräfte bzw. zu der Fläche 120 des Stuhls im wesentlichen parallele Kräfte umgesetzt werden. Diese Scherkräfte bewirken leichte Kipp- bzw. Wipp-Bewegungen (in Fig. 3 durch den Doppelpfeil B angedeutet) der auf dem Hohlkörpersitzenden Person 110, 110'. Der Hohlkörper 100 kann sich unter dieser verschiedenartigen Belastung verformen (vgl. unter 100') und folgt den Bewegungen der Person.The elastic configuration of the skin of the hollow body 100, 100 ', which is formed in particular from plasticized polyvinyl chloride, causes, as with the known seat balls, that part of the forces generated by the load on the person in shear forces or to the surface 120 of the chair essentially parallel forces are implemented. These shear forces cause slight tilting or rocking movements (indicated by the double arrow B in FIG. 3) of the person 110, 110 'sitting on the hollow body. The hollow body 100 can deform under this various load (see under 100 ') and follows the movements of the person.

Dieses als "dynamische Sitzen" bekannte Verhalten führt zu den obengenannten orthopädischen und ergonomischen Vorteilen und erzeugt somit ein Wohlbehagen der auf dem Hohlkörper sitzenden Person.This behavior known as "dynamic sitting" leads to the above-mentioned orthopedic and ergonomic advantages and thus creates a feeling of well-being of the person sitting on the hollow body.

Claims (10)

Hohlkörper für die Benutzung als Sitzunterlage, mit einem Auflagebereich (20), einem Sitzbereich (10) und einem dazwischen angeordneten Übergangsbereich (30), dadurch gekennzeichnet, daß der Auflagebereich (20) und der Sitzbereich (10) im wesentlichen flach sind und der Übergangsbereich (30) wulstförmig ist.Hollow body for use as a seat pad, with a support area (20), a seat area (10) and an intermediate transition area (30), characterized in that the support area (20) and the seat area (10) are essentially flat and the transition area (30) is bulbous. Hohlkörper gemäß Anspruch 1, dadurch gekennzeichnet, daß der Hohlkörper eine Hohlkörperhaut (40) aus Kunststoff umfaßt.Hollow body according to claim 1, characterized in that the hollow body comprises a hollow body skin (40) made of plastic. Hohlkörper gemäß Anspruch 2, dadurch gekennzeichnet, daß der Kunststoff weichgemachtes Polyvinylchlorid (PVC) enthält.Hollow body according to claim 2, characterized in that the plastic contains plasticized polyvinyl chloride (PVC). Hohlkörper gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Hohlkörper in der Draufsicht eine runde oder ovale Form aufweist.Hollow body according to one of the preceding claims, characterized in that the hollow body has a round or oval shape in plan view. Hohlkörper gemäß einen der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Hohlkörperhaut (40) eine Stärke im Bereich von 1 bis 10 mm aufweist.Hollow body according to one of the preceding claims, characterized in that the hollow body skin (40) has a thickness in the range from 1 to 10 mm. Hohlkörper gemäß Anspruch 5, dadurch gekennzeichnet, daß die Hohlkörperhaut (40) eine Stärke im Bereich von 2 bis 8 mm aufweist.Hollow body according to claim 5, characterized in that the hollow body skin (40) has a thickness in the range of 2 to 8 mm. Hohlkörper gemäß Anspruch 6, dadurch gekennzeichnet, daß die Hohlkörperhaut (40) eine Stärke im Bereich von 4 bis 6 mm aufweist.Hollow body according to claim 6, characterized in that the hollow body skin (40) has a thickness in the range of 4 to 6 mm. Hohlkörper gemäß einen der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Hohlkörperhaut (40) in vorbestimmten Bereichen vorspringende Anformungen (42, 42', 42'', 44, 44', 44'') aufweist.Hollow body according to one of the preceding claims, characterized in that that the hollow body skin (40) has protruding projections (42, 42 ', 42'', 44, 44', 44 '') in predetermined areas. Hohlkörper gemäß Anspruch 8, dadurch gekennzeichnet, daß die Anformungen (42, 42', 42'', 44, 44', 44'') eine Stärke im Bereich von 0,05 bis 0,5 mm aufweisen.Hollow body according to claim 8, characterized in that the projections (42, 42 ', 42' ', 44, 44', 44 '') have a thickness in the range from 0.05 to 0.5 mm. Hohlkörper gemäß Anspruch 9, dadurch gekennzeichnet, daß die Anformungen (42, 42', 42'', 44, 44', 44'') eine Stärke im Bereich von 0,1 bis 0,4 mm aufweisen.Hollow body according to claim 9, characterized in that the projections (42, 42 ', 42' ', 44, 44', 44 '') have a thickness in the range from 0.1 to 0.4 mm.
EP95114982A 1994-10-06 1995-09-22 Hollow object used as a seat support Expired - Lifetime EP0705549B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9416126U 1994-10-06
DE9416126U DE9416126U1 (en) 1994-10-06 1994-10-06 Hollow body for use as a seat pad

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EP0705549A1 true EP0705549A1 (en) 1996-04-10
EP0705549B1 EP0705549B1 (en) 1998-12-02

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US (1) US5634223A (en)
EP (1) EP0705549B1 (en)
AT (1) ATE173896T1 (en)
DE (1) DE9416126U1 (en)
DK (1) DK0705549T3 (en)

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Also Published As

Publication number Publication date
DK0705549T3 (en) 1999-08-16
US5634223A (en) 1997-06-03
EP0705549B1 (en) 1998-12-02
DE9416126U1 (en) 1995-02-02
ATE173896T1 (en) 1998-12-15

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