EP2735246B1 - Folding frame - Google Patents

Folding frame Download PDF

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Publication number
EP2735246B1
EP2735246B1 EP13193906.8A EP13193906A EP2735246B1 EP 2735246 B1 EP2735246 B1 EP 2735246B1 EP 13193906 A EP13193906 A EP 13193906A EP 2735246 B1 EP2735246 B1 EP 2735246B1
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EP
European Patent Office
Prior art keywords
seat
seat elements
frame
elements
articulated
Prior art date
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.)
Not-in-force
Application number
EP13193906.8A
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German (de)
French (fr)
Other versions
EP2735246A1 (en
Inventor
Andreas Nahrwold
Dmitrij Hildebrand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meyra GmbH
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Meyra GmbH
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Publication of EP2735246A1 publication Critical patent/EP2735246A1/en
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Publication of EP2735246B1 publication Critical patent/EP2735246B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/04—Folding chairs with inflexible seats
    • A47C4/045—Folding chairs with inflexible seats foldable side to side only
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/04—Wheeled walking aids for disabled persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0161—Size reducing arrangements when not in use, for stowing or transport
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/1628—Pelvis
    • A61H2201/1633—Seat

Definitions

  • the invention relates to a foldable frame with two side frames, which are interconnected by means of a seat, in particular for rolling mobility aids, wheelchairs, walkers or the like.
  • the invention relates to a folding mechanism in which a split, fixed seat, designed by suitable design foldable.
  • the foldable frame according to the invention can be designed for example in the form of a folding wheelchair or walker, it can also be used as a toilet wheelchair or in other ways.
  • the constructions known from the prior art have either scissor connections, by means of which the two side frames are connected so that they can be approximated or spaced from one another. These scissor mechanisms can be locked in the sitting position and / or the folded position.
  • the known constructions each have flexible seats, which are folded when folding the foldable frame. In the position of use, these constructions are not preferable for aesthetic reasons, since there is no flat seat. With prolonged use, the towels stretch so that the seat sags on. Overall, a construction results, which often makes a not very stable impression and in particular optical requirements usually not enough.
  • a foldable walker known in which the side frames are connected by means of both a lower, hinged foldable cross member and by means of a seat.
  • the seat comprises two rigid, plate-like seat elements which are hinged together.
  • the seat elements are coupled to the lower cross strut via coupling rods crosswise articulated.
  • the US 1,453,504 discloses a folding table comprising two hingedly connected tabletops connected by a central lever and coupling rods 31, 32.
  • the invention has for its object to provide a foldable frame of the type mentioned, which offers a solid seat with a simple design and simple, cost manufacturability and high optical requirements.
  • a foldable frame is provided with two side frames, which are interconnected by means of a seat.
  • the seat is designed as a rigid seat, which is formed by two rigid, plate-like seat elements, which are hinged together.
  • the two plate-like seating elements are symmetrical in each case to the hinge axis.
  • the respective other ends of the seat elements are hingedly connected to the respective side frame. In a collapsing of the foldable frame by approaching the two side frames thus the two seat elements are pivoted to each other and to the respective side frame.
  • a coupling mechanism is further provided, which connects the side frame and the seat elements together.
  • An essential aspect of the embodiment according to the invention is also that, in the unfolded sitting position, at least part of the linkage is received in recesses on the underside of the seat elements.
  • the coupling gear is thus not visible in the operational, unfolded state for the user, so that there is a stable and visually the highest requirements sufficient overall construction.
  • the coupling mechanism is preferably arranged only on a side region of the seat elements which does not face the side frame (1, 2). This means, for example, that when a user sits on the foldable frame, the linkage is located either on the front or on the rear side of the seat elements.
  • a free space is created, which allows, for example, to design the foldable frame according to the invention as a toilet chair or in a similar manner.
  • the coupling gear thus allows, for example, in the center The area of the seat to provide a hygiene cutout.
  • the foldable frame can be used for example as a shower seat.
  • the coupling mechanism each comprise a four-bar linkage which couples the seat elements together. Furthermore, in each case a coupling rod is provided, which connects the four-bar linkage articulated to a lower portion of the respective side frame. This ensures that results in a parallelogram-like construction, which provides in particular for a synchronous Faltablauf both side frames.
  • the four-bar linkage according to the invention comprises two struts, which are hingedly connected to each other at one end and whose other ends are each hingedly connected to the respective one of the seat elements.
  • Such a construction is simple and inexpensive to produce and allows the coupling gear, as mentioned, to receive in the preferred manner slot-like recess on the underside of the seat elements in the sitting position.
  • the coupling rod according to the invention is connected at one of its ends to the articulated connection of the struts, while the other end of the coupling rod is articulated to a lower region of the respective side frame.
  • the articulated connection of the two seat elements is inventively designed so that forms a dead center.
  • the articulated connection is preferably arranged on the underside of the two seat elements (based on the unfolded seat state.)
  • the two seat elements are supported above one another above the hinge-like connection, so that the system stabilizes itself in the unfolded, seated state.
  • the two seat elements can be locked against each other at their connection area by means of an additional locking mechanism. On This way it is prevented that foldable frame according to the invention unintentionally folds when lifting itself. In such a lock could also be provided to dispense with the dead center control described above.
  • the articulated connection between the side frame and the seat element is preferably carried out via a U-shaped or cranked bearing element. This makes it possible to accommodate the joint region of the connection between the seat elements and the side frames, in particular in the folded position to save space.
  • the foldable frame according to the invention Due to the extremely flat design of the folding system according to the invention in conjunction with a tight fit, which may be provided, for example, as mentioned, with a hygiene cutout, it is possible to form the foldable frame according to the invention as a folding wheelchair, which can also be used as a toilet wheelchair. It is because the coupling mechanism with the coupling rods located on one side of the seat, a running over a toilet possible.
  • Another advantage of the embodiment of the invention is that the solid construction of the seat ensures a high degree of comfort and reduces the pressure ulcer risk.
  • the foldable frame according to the invention comprises two side frames 1, 2, which are U-shaped in side view. It is understood that the side frames 1, 2 may be provided on their undersides with wheels or wheels, as is the case with folding wheelchairs or the like.
  • the side frames 1 and 2 are shown only schematically to illustrate the structure of the foldable frame according to the invention.
  • the two side frames 1 and 2 are connected by means of seating elements 3 and 4.
  • the seat elements 3 and 4 are each plate-shaped and rigid and connected at its central region via an articulated connection 5 (joint of the seat elements). This is especially in Fig. 4 clarified.
  • the hinge 5 is seated on the underside of the seat elements 3 and 4, so that a dead center configuration results, which the seat elements 3 and 4 in the unfolded position (s. Fig. 1 ) against each other.
  • a coupling gear This comprises a four-bar linkage, which is formed by a first strut 12 and a second strut 13. The two struts 12 and 13 are connected to one another at a joint 14. The free ends of the struts 12 and 13 are each articulated (15, 16) connected to the seat element 3, 4.
  • the first strut 12 is formed as a short strut, while the second strut 13 is formed as a longer strut and is hinged to the other of the two seat elements, as the Fig. 4 shows.
  • a coupling rod 9 or 10 is hingedly articulated, which is connected via a coupling rod joint 11 with the side frame 1, 2.
  • the Fig. 8 and 9 each show a perspective view of an embodiment of the foldable frame according to the invention.
  • the representation is analogous to the embodiment of Fig. 1 .
  • Wheels 18 attached to the lower ends of the side frames 1 and 2, which are steerable about a vertical axis, so that the foldable frame is used as a walker or walker.
  • pad elements 19 are placed on the seat elements 3 and 4, which improve the seating comfort.

Description

Die Erfindung bezieht sich auf ein faltbares Gestell mit zwei Seitenrahmen, welche mittels eines Sitzes miteinander verbunden sind, insbesondere für rollende Mobilitätshilfsmittel, Rollstühle, Rollatoren oder ähnliches.The invention relates to a foldable frame with two side frames, which are interconnected by means of a seat, in particular for rolling mobility aids, wheelchairs, walkers or the like.

Im Einzelnen bezieht sich die Erfindung auf einen Faltmechanismus, bei dem ein geteilter, fester Sitz, durch geeignete Ausgestaltung faltbar ausgeführt ist.In detail, the invention relates to a folding mechanism in which a split, fixed seat, designed by suitable design foldable.

Das erfindungsgemäße faltbare Gestell kann beispielsweise in Form eines Faltrollstuhls oder einer Gehhilfe ausgebildet sein, es kann auch als Toilettenrollstuhl oder in anderer Weise Verwendung finden.The foldable frame according to the invention can be designed for example in the form of a folding wheelchair or walker, it can also be used as a toilet wheelchair or in other ways.

Die aus dem Stand der Technik bekannten Konstruktionen weisen entweder Scherenverbindungen auf, mittels der die beiden Seitenrahmen so verbunden sind, dass sie aneinander angenähert oder voneinander beabstandet werden können. Dabei sind diese Scherenmechanismen jeweils in der Sitzposition und/oder der zusammengelegten Position sperrbar. Die bekannten Konstruktionen weisen jeweils flexible Sitztücher auf, die beim Zusammenlegen des faltbaren Gestells gefaltet werden. In der Gebrauchsstellung sind diese Konstruktionen aus ästhetischen Gründen nicht zu bevorzugen, da sich keine ebene Sitzfläche ergibt. Bei längerem Gebrauch dehnen sich die Sitztücher, so dass die Sitzfläche weiter durchhängt. Insgesamt ergibt sich eine Konstruktion, welche vielfach einen nicht sehr stabilen Eindruck macht und insbesondere optischen Anforderungen meist nicht genügt.The constructions known from the prior art have either scissor connections, by means of which the two side frames are connected so that they can be approximated or spaced from one another. These scissor mechanisms can be locked in the sitting position and / or the folded position. The known constructions each have flexible seats, which are folded when folding the foldable frame. In the position of use, these constructions are not preferable for aesthetic reasons, since there is no flat seat. With prolonged use, the towels stretch so that the seat sags on. Overall, a construction results, which often makes a not very stable impression and in particular optical requirements usually not enough.

Aus der US 2012/0133106 A1 ist eine faltbare Gehhilfe bekannt, bei welcher die Seitenrahmen sowohl mittels einer unteren, gelenkig faltbaren Querstrebe als auch mittels eines Sitzes verbunden sind. Der Sitz umfasst zwei starre, plattenartige Sitzelemente, welche gelenkig miteinander verbunden sind. Die Sitzelemente sind mit der unteren Querstrebe über Koppelstangen kreuzweise gelenkig gekoppelt.From the US 2012/0133106 A1 is a foldable walker known in which the side frames are connected by means of both a lower, hinged foldable cross member and by means of a seat. The seat comprises two rigid, plate-like seat elements which are hinged together. The seat elements are coupled to the lower cross strut via coupling rods crosswise articulated.

Die US 1,453,504 offenbart einen klappbaren Tisch, welcher zwei miteinander gelenkig verbundene Tischplatten umfasst, die über einen mittigen Hebel und Koppelstangen 31, 32 verbunden sind.The US 1,453,504 discloses a folding table comprising two hingedly connected tabletops connected by a central lever and coupling rods 31, 32.

Weiter zusammenlegbare Tische zeigen die US 6,032,585 und die JP 55-37672 . Auch hierbei sind die Tischhälften teils direkt gelenkig miteinander verbunden, teils mittels Zwischenelementen gekoppelt.Further collapsible tables show the US 6,032,585 and the JP 55-37672 , Again, the table halves are partly directly hinged together, partly coupled by means of intermediate elements.

Der Erfindung liegt die Aufgabe zugrunde, ein faltbares Gestell der eingangs genannten Art zu schaffen, welches bei einfachem Aufbau und einfacher, kostengünstiger Herstellbarkeit eine feste Sitzfläche bietet und hohen optischen Anforderungen genügt.The invention has for its object to provide a foldable frame of the type mentioned, which offers a solid seat with a simple design and simple, cost manufacturability and high optical requirements.

Erfindungsgemäß wird die Aufgabe durch die Merkmalskombination des Anspruchs 1 gelöst, die Unteransprüche zeigen weitere vorteilhafte Ausgestaltungen der Erfindung.According to the invention the object is achieved by the combination of features of claim 1, the dependent claims show further advantageous embodiments of the invention.

Erfindungsgemäß ist somit ein faltbares Gestell mit zwei Seitenrahmen vorgesehen, welche mittels eines Sitzes miteinander verbunden sind. Dabei ist der Sitz als starrer Sitz ausgebildet, welcher durch zwei starre, plattenartige Sitzelemente gebildet wird, welche gelenkig miteinander verbunden sind. Somit liegt ein, bezogen auf das faltbare Gestell, mittiges Gelenk vor, so dass die beiden plattenartigen Sitzelemente jeweils zu der Gelenkachse symmetrisch aufgebaut sind.According to the invention thus a foldable frame is provided with two side frames, which are interconnected by means of a seat. In this case, the seat is designed as a rigid seat, which is formed by two rigid, plate-like seat elements, which are hinged together. Thus, based on the foldable frame, there is a central joint, so that the two plate-like seating elements are symmetrical in each case to the hinge axis.

Die jeweils anderen Enden der Sitzelemente sind gelenkig mit dem jeweiligen Seitenrahmen verbunden. Bei einem Zusammenlegen des faltbaren Gestells durch Annäherung der beiden Seitenrahmen werden somit die beiden Sitzelemente zueinander und zu dem jeweiligen Seitenrahmen verschwenkt.The respective other ends of the seat elements are hingedly connected to the respective side frame. In a collapsing of the foldable frame by approaching the two side frames thus the two seat elements are pivoted to each other and to the respective side frame.

Um eine ausreichende Stabilität zu gewährleisten und um den Bewegungsablauf beim Zusammenlegen bzw. Aufstellen des faltbaren Gestells zu sichern, ist erfindungsgemäß weiterhin ein Koppelgetriebe vorgesehen, welches die Seitenrahmen und die Sitzelemente miteinander verbindet.In order to ensure sufficient stability and to ensure the sequence of movement when folding or setting up the foldable frame, according to the invention a coupling mechanism is further provided, which connects the side frame and the seat elements together.

Ein wesentlicher Aspekt der erfindungsgemäßen Ausgestaltung liegt auch darin, dass in der aufgeklappten Sitzstellung zumindest ein Teil des Koppelgetriebes in Ausnehmungen an der Unterseite der Sitzelemente aufgenommen ist. Das Koppelgetriebe ist somit im betriebsbereiten, aufgeklappten Zustand für den Benutzer nicht sichtbar, so dass sich eine stabile und auch optisch den höchsten Anforderungen genügende Gesamtkonstruktion ergibt.An essential aspect of the embodiment according to the invention is also that, in the unfolded sitting position, at least part of the linkage is received in recesses on the underside of the seat elements. The coupling gear is thus not visible in the operational, unfolded state for the user, so that there is a stable and visually the highest requirements sufficient overall construction.

Erfindungsgemäß ist bevorzugter Weise das Koppelgetriebe nur an einem nicht den Seitenrahmen (1, 2) zugewandten Seitenbereich der Sitzelemente angeordnet. Dies bedeutet beispielsweise, dass, wenn ein Benutzer auf dem faltbaren Gestell sitzt, sich das Koppelgetriebe entweder an der vorderen oder an der hinteren Seite der Sitzelemente befindet. Somit wird ein Freiraum geschaffen, der es beispielsweise gestattet, das erfindungsgemäße faltbare Gestell als Toilettenstuhl oder in ähnlicher Weise auszugestalten. Das Koppelgetriebe gestattet es somit, beispielsweise im mittigen Bereich des Sitzes einen Hygieneausschnitt vorzusehen. Somit kann das faltbare Gestell beispielsweise auch als Duschsitz verwendet werden.According to the invention, the coupling mechanism is preferably arranged only on a side region of the seat elements which does not face the side frame (1, 2). This means, for example, that when a user sits on the foldable frame, the linkage is located either on the front or on the rear side of the seat elements. Thus, a free space is created, which allows, for example, to design the foldable frame according to the invention as a toilet chair or in a similar manner. The coupling gear thus allows, for example, in the center The area of the seat to provide a hygiene cutout. Thus, the foldable frame can be used for example as a shower seat.

Erfindungsgemäß ist vorgesehen, dass das Koppelgetriebe jeweils ein Viergelenkgetriebe umfasst, welches die Sitzelemente miteinander koppelt. Weiterhin ist jeweils eine Koppelstange vorgesehen, die das Viergelenkgetriebe gelenkig mit einem unteren Bereich des jeweiligen Seitenrahmens verbindet. Hierdurch wird sichergestellt, dass sich eine parallelogrammartige Konstruktion ergibt, welche insbesondere für einen synchronen Faltablauf beider Seitenrahmen sorgt.According to the invention, it is provided that the coupling mechanism each comprise a four-bar linkage which couples the seat elements together. Furthermore, in each case a coupling rod is provided, which connects the four-bar linkage articulated to a lower portion of the respective side frame. This ensures that results in a parallelogram-like construction, which provides in particular for a synchronous Faltablauf both side frames.

Das Viergelenkgetriebe umfasst Erfindungsgemäß zwei Streben, welche an jeweils einem Ende gelenkig miteinander verbunden sind und deren andere Enden jeweils gelenkig mit dem jeweils einen der Sitzelemente verbunden sind. Eine derartige Konstruktion ist einfach und kostengünstig herstellbar und gestattet es, das Koppelgetriebe, wie erwähnt, in der bevorzugter Weise schlitzartig ausgebildeten Ausnehmung an der Unterseite der Sitzelemente in der Sitzstellung aufzunehmen.The four-bar linkage according to the invention comprises two struts, which are hingedly connected to each other at one end and whose other ends are each hingedly connected to the respective one of the seat elements. Such a construction is simple and inexpensive to produce and allows the coupling gear, as mentioned, to receive in the preferred manner slot-like recess on the underside of the seat elements in the sitting position.

Die Koppelstange ist Erfindungsgemäß mit einem ihrer Enden mit der Gelenkverbindung der Streben verbunden, während das andere Ende der Koppelstange an einem unten liegenden Bereich des jeweiligen Seitenrahmens gelenkig angeordnet ist.The coupling rod according to the invention is connected at one of its ends to the articulated connection of the struts, while the other end of the coupling rod is articulated to a lower region of the respective side frame.

Die gelenkige Verbindung der beiden Sitzelemente ist Erfindungsgemäß so ausgebildet, dass sich ein Totpunkt bildet. Hierzu ist die gelenkige Verbindung bevorzugt an der Unterseite der beiden Sitzelemente angeordnet (bezogen auf den aufgeklappten Sitz-Zustand. Somit stützen sich die beiden Sitzelemente oberhalb der scharnierartigen Verbindung gegeneinander ab, so dass sich das System im auseinandergefalteten sitzbereiten Zustand selbst stabilisiert.The articulated connection of the two seat elements is inventively designed so that forms a dead center. For this purpose, the articulated connection is preferably arranged on the underside of the two seat elements (based on the unfolded seat state.) Thus, the two seat elements are supported above one another above the hinge-like connection, so that the system stabilizes itself in the unfolded, seated state.

Besonders günstig ist, wenn die beiden Sitzelemente an ihrem Verbindungsbereich mittels eines zusätzlichen Sperrmechanismus gegeneinander verriegelbar sind. Auf diese Weise wird verhindert, dass sich das erfindungsgemäße faltbare Gestell unbeabsichtigter Weise beim Anheben selbst zusammenfaltet. Bei einer derartigen Verriegelung könnte auch vorgesehen sein, auf die oben beschriebene Totpunktregelung zu verzichten.It is particularly advantageous if the two seat elements can be locked against each other at their connection area by means of an additional locking mechanism. On This way it is prevented that foldable frame according to the invention unintentionally folds when lifting itself. In such a lock could also be provided to dispense with the dead center control described above.

Die gelenkige Verbindung zwischen dem Seitenrahmen und dem Sitzelement erfolgt bevorzugter Weise über ein U-förmiges bzw. gekrängtes Lagerelement. Dieses ermöglicht es, den Gelenkbereich der Verbindung zwischen den Sitzelementen und den Seitenrahmen jeweils insbesondere in der zusammengelegten Stellung platzsparend unterzubringen.The articulated connection between the side frame and the seat element is preferably carried out via a U-shaped or cranked bearing element. This makes it possible to accommodate the joint region of the connection between the seat elements and the side frames, in particular in the folded position to save space.

Durch die extrem flache Bauweise des erfindungsgemäßen Faltsystems in Verbindung mit einem festen Sitz, der beispielsweise, wie erwähnt, auch mit einem Hygieneausschnitt versehen sein kann, ist es möglich, das erfindungsgemäße faltbare Gestell als Faltrollstuhl auszubilden, welches auch als Toilettenrollstuhl verwendet werden kann. Dabei ist, da das Koppelgetriebe mit den Koppelstangen sich an einer Seite des Sitzes befindet, ein Überfahren einer Toilette möglich.Due to the extremely flat design of the folding system according to the invention in conjunction with a tight fit, which may be provided, for example, as mentioned, with a hygiene cutout, it is possible to form the foldable frame according to the invention as a folding wheelchair, which can also be used as a toilet wheelchair. It is because the coupling mechanism with the coupling rods located on one side of the seat, a running over a toilet possible.

Ein weiterer Vorteil der erfindungsgemäßen Ausgestaltung liegt darin, dass die feste Konstruktion des Sitzes ein hohes Maß an Sitzkomfort gewährleistet und die Dekubitus-Gefahr verringert.Another advantage of the embodiment of the invention is that the solid construction of the seat ensures a high degree of comfort and reduces the pressure ulcer risk.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:

Fig. 1
eine perspektivische Seitenansicht im aufgeklappten sitzbereiten Zustand,
Fig. 2
eine Ansicht, analog Fig. 1, in einer Zwischenposition,
Fig. 3
eine Ansicht, analog den Fig. 1 und 2, im zusammengelegten Zustand,
Fig. 4
eine perspektivische Ansicht, analog Fig. 1,
Fig. 5
eine Seitenansicht eines Zwischenzustands, analog Fig. 2,
Fig. 6
eine perspektivische Ansicht, analog den Fig. 2 und 4,
Fig. 7
eine perspektivische Ansicht des zusammengelegten Zustands, analog Fig. 3,
Fig. 8
eine perspektivische Ansicht, ähnlich Fig. 1, eines weiteren Ausführungsbeispiels des erfindungsgemäßen faltbaren Gestells mit Rädern, und
Fig. 9
eine Darstellung, analog Fig. 8, mit Sitzpolstern auf den Sitzelementen.
In the following the invention will be described by means of an embodiment in conjunction with the drawing. Showing:
Fig. 1
a perspective side view in the unfolded seated state,
Fig. 2
a view, analog Fig. 1 , in an intermediate position,
Fig. 3
a view analogous to Fig. 1 and 2 in the folded state,
Fig. 4
a perspective view, analog Fig. 1 .
Fig. 5
a side view of an intermediate state, analog Fig. 2 .
Fig. 6
a perspective view, analogous to Fig. 2 and 4 .
Fig. 7
a perspective view of the collapsed state, analog Fig. 3 .
Fig. 8
a perspective view, similar Fig. 1 , Another embodiment of the inventive folding frame with wheels, and
Fig. 9
a representation, analog Fig. 8 , with seat cushions on the seat elements.

Das erfindungsgemäße faltbare Gestell umfasst zwei Seitenrahmen 1, 2, welche in der Seitenansicht U-förmig ausgebildet sind. Es versteht sich, dass die Seitenrahmen 1, 2 an ihren Unterseiten auch mit Rollen oder Rädern versehen sein können, so wie dies bei Faltrollstühlen oder ähnlichem der Fall ist. Die Seitenrahmen 1 und 2 sind nur schematisch dargestellt, um den Aufbau des erfindungsgemäßen faltbaren Gestells zu verdeutlichen.The foldable frame according to the invention comprises two side frames 1, 2, which are U-shaped in side view. It is understood that the side frames 1, 2 may be provided on their undersides with wheels or wheels, as is the case with folding wheelchairs or the like. The side frames 1 and 2 are shown only schematically to illustrate the structure of the foldable frame according to the invention.

Die beiden Seitenrahmen 1 und 2 sind mittels Sitzelementen 3 und 4 verbunden. Die Sitzelemente 3 und 4 sind jeweils plattenförmig und starr ausgebildet und an ihrem mittleren Bereich über eine gelenkige Verbindung 5 (Gelenk der Sitzelemente) verbunden. Dies ist insbesondere in Fig. 4 verdeutlicht. Das Gelenk 5 sitzt an der Unterseite der Sitzelemente 3 und 4, so dass sich eine Totpunkt-Ausgestaltung ergibt, welche die Sitzelemente 3 und 4 in der aufgeklappten Position (s. Fig. 1) gegeneinander abstützen.The two side frames 1 and 2 are connected by means of seating elements 3 and 4. The seat elements 3 and 4 are each plate-shaped and rigid and connected at its central region via an articulated connection 5 (joint of the seat elements). This is especially in Fig. 4 clarified. The hinge 5 is seated on the underside of the seat elements 3 and 4, so that a dead center configuration results, which the seat elements 3 and 4 in the unfolded position (s. Fig. 1 ) against each other.

Die Verbindung der Sitzelemente 3 und 4 mit den Seitenrahmen 1 und 2 erfolgt über Sitzrahmengelenke 6 und 7. Diese können jeweils durch ein U-förmiges oder gekrängtes Lagerelement 17 gebildet sein, so wie dies insbesondere aus den Fig. 5 und 6 besonders deutlich sichtbar ist. An einem Ende bzw. einer Seite der Sitzelemente 3 und 4 (s. beispielsweise Fig. 5) ist ein Koppelgetriebe vorgesehen. Dieses umfasst ein Viergelenkgetriebe, welches durch eine erste Strebe 12 und eine zweiten Strebe 13 gebildet wird. Die beiden Streben 12 und 13 sind an einem Gelenk 14 miteinander verbunden. Die freien Ende der Streben 12 und 13 sind jeweils gelenkig (15, 16) mit dem Sitzelement 3, 4 verbunden. Die erste Strebe 12 ist dabei als kurze Strebe ausgebildet, während die zweite Strebe 13 als längere Strebe ausgebildet ist und gelenkig an dem anderen der beiden Sitzelemente befestigt ist, so wie dies die Fig. 4 zeigt. Im Bereich des Gelenks 14 ist gelenkig eine Koppelstange 9 bzw. 10 angelenkt, welche über ein Koppelstangengelenk 11 mit dem Seitenrahmen 1, 2 verbunden ist.The connection of the seat elements 3 and 4 with the side frames 1 and 2 via seat frame joints 6 and 7. These can each be formed by a U-shaped or cranked bearing element 17, as in particular from the Fig. 5 and 6 is clearly visible. At one end or side of the seat elements 3 and 4 (see, for example, FIG Fig. 5 ) is provided a coupling gear. This comprises a four-bar linkage, which is formed by a first strut 12 and a second strut 13. The two struts 12 and 13 are connected to one another at a joint 14. The free ends of the struts 12 and 13 are each articulated (15, 16) connected to the seat element 3, 4. The first strut 12 is formed as a short strut, while the second strut 13 is formed as a longer strut and is hinged to the other of the two seat elements, as the Fig. 4 shows. In the region of the joint 14, a coupling rod 9 or 10 is hingedly articulated, which is connected via a coupling rod joint 11 with the side frame 1, 2.

Im betriebsbereiten Zustand (Fig. 1 und 5) sind die ersten und zweiten Streben 12, 13 jeweils in einer Ausnehmung 8 bzw. einem Schlitz 8 an der Unterseite des Sitzelements 3, 4 aufgenommen, so dass diese seitlich nicht sichtbar sind. Dies ist insbesondere aus den Fig. 1 und 5 ersichtlich.In the ready state ( Fig. 1 and 5 ) are the first and second struts 12, 13 each received in a recess 8 and a slot 8 at the bottom of the seat member 3, 4, so that they are not visible from the side. This is especially true of the Fig. 1 and 5 seen.

Die Fig. 8 und 9 zeigen jeweils eine perspektivische Ansicht eines Ausführungsbeispiels des erfindungsgemäßen faltbaren Gestells. Die Darstellung erfolgt analog dem Ausführungsbeispiel der Fig. 1. Zusätzlich sind bei den Ausführungsbeispielen der Fig. 8 und 9 Räder 18 an den unteren Enden der Seitenrahmen 1 und 2 befestigt, welche um eine vertikale Achse lenkbar sind, so dass das faltbare Gestell als Rollator oder Gehhilfe verwendbar ist. Bei dem in Fig. 9 gezeigten Ausführungsbeispiel sind auf die Sitzelemente 3 und 4 jeweils Polsterelemente 19 aufgelegt, die den Sitzkomfort verbessern.The Fig. 8 and 9 each show a perspective view of an embodiment of the foldable frame according to the invention. The representation is analogous to the embodiment of Fig. 1 , In addition, in the embodiments of the Fig. 8 and 9 Wheels 18 attached to the lower ends of the side frames 1 and 2, which are steerable about a vertical axis, so that the foldable frame is used as a walker or walker. At the in Fig. 9 shown embodiment, pad elements 19 are placed on the seat elements 3 and 4, which improve the seating comfort.

Es versteht sich, dass in der oben stehenden Beschreibung unter dem Begriff "Gelenk" auch die Gelenkachse der jeweiligen gelenkigen Verbindung zu verstehen ist.It is understood that in the above description by the term "joint" and the hinge axis of the respective articulated connection is to be understood.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1, 21, 2
Seitenrahmenside frame
3, 43, 4
Sitzelementseat element
55
Gelenk der Sitzelemente / gelenkige VerbindungJoint of the seat elements / articulated connection
6, 76, 7
SitzrahmengelenkSeat frame joint
88th
Ausnehmung / SchlitzRecess / slot
9, 109, 10
Koppelstangecoupling rod
1111
KoppelstangengelenkCoupling rod joint
1212
erste Strebe des Viergelenkgetriebesfirst strut of the four-bar mechanism
1313
zweite Strebe des Viergelenkgetriebessecond strut of the four-bar mechanism
14 bis 1614 to 16
Gelenk / gelenkige VerbindungJoint / articulated connection
1717
Lagerelementbearing element
1818
Radwheel
1919
Polsterelementcushion element

Claims (6)

  1. Foldable frame with two side frames (1, 2) which are interconnected by means of a seat, the seat comprising two rigid, plate-like seat elements (3, 4) which are articulated (5) to each other, a respective one of the seat elements (3, 4) being articulated (6, 7) to a respective side frame (1, 2), the side frames (1, 2) and the seat elements (3, 4) being interconnected by means of a coupling mechanism, and in the unfolded seat position at least a portion of the coupling mechanism being received in recesses (8) on the bottom side of the seat elements (3, 4), characterized in
    - that the coupling mechanism comprises a respective four-bar linkage which couples the seat elements (3, 4) to each other, and a respective coupling bar (9, 10) which articulates (11) the four bar linkage to a lower portion of the respective side frame (1, 2), and
    - two struts (12, 13) are connected to the articulation (14) at an end of the coupling bar (9, 10), wherein
    - the four bar linkage comprises two struts (12, 13) which are articulated (14) to each other at an end, and the other ends of which are respectively articulated (15, 16) to a respective one of the seat elements (3, 4), and
    - that the articulated connection (5) of the seat elements (3, 4) is arranged on the bottom side of the two seat elements (3,4) for forming a dead point.
  2. Frame according to claim 1, characterized in that the coupling mechanism is arranged only at a side portion of the seat elements (3, 4) that does not face the side frame (1, 2).
  3. Frame according to claim 1 or 2, characterized in that the two seat elements (3, 4) can be locked against each other on their connection portion (5) by means of a locking mechanism.
  4. Frame according to any one of claims 1 to 3, characterized in that the articulated connection (6, 7) between the side frame (1, 2) and the seat element (3, 4) is established by means of a substantially U-shaped and/or bent bearing element (17).
  5. Frame according to any one of claims 1 to 4, characterized in that the seat elements (3, 4) on their bottom side comprise a respective slit forming the recess (8).
  6. Frame according to any one of claims 1 to 5, characterized in that the side frames (1, 2) are each configured to be substantially U-shaped.
EP13193906.8A 2012-11-23 2013-11-21 Folding frame Not-in-force EP2735246B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012022932.1A DE102012022932A1 (en) 2012-11-23 2012-11-23 Foldable frame

Publications (2)

Publication Number Publication Date
EP2735246A1 EP2735246A1 (en) 2014-05-28
EP2735246B1 true EP2735246B1 (en) 2016-02-10

Family

ID=49683448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13193906.8A Not-in-force EP2735246B1 (en) 2012-11-23 2013-11-21 Folding frame

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EP (1) EP2735246B1 (en)
DE (1) DE102012022932A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106264991A (en) * 2016-09-27 2017-01-04 东莞市联洲知识产权运营管理有限公司 A kind of folding walking aid

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106264992B (en) * 2016-09-27 2018-11-02 南安市弈星机械科技有限公司 A kind of walk helper with storage chair back bar
CN106420274B (en) * 2016-09-27 2018-11-02 南安市弈星机械科技有限公司 A kind of walk helper with rotary folding type chair back bar
CN106618969B (en) * 2016-09-27 2019-04-09 郑纪兰 A kind of walk helper with plug-in chair back bar unit
CN106344353B (en) * 2016-09-27 2018-11-02 南安市瑞竣机械科技有限公司 A kind of walk helper with gear lifting gear

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Publication number Priority date Publication date Assignee Title
US1453504A (en) * 1921-11-10 1923-05-01 John F Janisch Automatic self-locking folding table
JPS586345Y2 (en) * 1978-09-04 1983-02-03 美津濃株式会社 Folding table tennis table
US6032585A (en) * 1996-08-09 2000-03-07 Cosco, Inc. Folding banquet table
US8505936B2 (en) * 2010-10-29 2013-08-13 Evolution Technologies Inc. Foldable walker apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106264991A (en) * 2016-09-27 2017-01-04 东莞市联洲知识产权运营管理有限公司 A kind of folding walking aid

Also Published As

Publication number Publication date
DE102012022932A1 (en) 2014-06-12
EP2735246A1 (en) 2014-05-28

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