EP0138116B1 - Collapsible wheelchair - Google Patents

Collapsible wheelchair Download PDF

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Publication number
EP0138116B1
EP0138116B1 EP84111521A EP84111521A EP0138116B1 EP 0138116 B1 EP0138116 B1 EP 0138116B1 EP 84111521 A EP84111521 A EP 84111521A EP 84111521 A EP84111521 A EP 84111521A EP 0138116 B1 EP0138116 B1 EP 0138116B1
Authority
EP
European Patent Office
Prior art keywords
seat
struts
wheelchair
seat frame
base unit
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.)
Expired
Application number
EP84111521A
Other languages
German (de)
French (fr)
Other versions
EP0138116A2 (en
EP0138116A3 (en
Inventor
Ignaz Dipl.-Ing. Vogel
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.)
Vogel GmbH and Co KG Immobilien und Baugesellschaft
Original Assignee
Ignaz Vogel GmbH and Co KG Fahrzeugsitze
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Publication date
Application filed by Ignaz Vogel GmbH and Co KG Fahrzeugsitze filed Critical Ignaz Vogel GmbH and Co KG Fahrzeugsitze
Publication of EP0138116A2 publication Critical patent/EP0138116A2/en
Publication of EP0138116A3 publication Critical patent/EP0138116A3/en
Application granted granted Critical
Publication of EP0138116B1 publication Critical patent/EP0138116B1/en
Expired legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10Parts, details or accessories
    • A61G5/1002Parts, details or accessories with toilet facilities
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/085Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0891Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair

Definitions

  • the invention relates to a collapsible wheelchair for the disabled with a floor assembly, which has castors at the corner points, with a seat with a backrest, which consists of a fixed seat frame and a foldable down about an axis arranged at the front edge of the seat, with a between the Floor assembly and the seat arranged support body, which has a rear pair of struts, which is articulated to the rear area of the floor assembly and the seat, the seat on the rear pair of struts is horizontally displaceable and the articulated axes are arranged transversely to the plane of symmetry of the wheelchair, which in the unfolded position of the wheelchair protrudes approximately vertically from the lifting group, and which can be locked in a folding position running approximately parallel to the floor group, and with at least one roller arranged on the rear edge of the seat frame with an axis transverse to the symmetry plane of the wheelchair.
  • collapsible wheelchairs are particularly needed when using vehicles - land, air and water vehicles - by disabled people who cannot use their own disabled wheelchair, which may have been individually designed for them, in the passenger compartments of these vehicles due to the cramped conditions.
  • this collapsible wheelchair is required to enable the disabled to use the vehicle toilets, which, again due to the limited space, would not be possible even if the disabled could otherwise use their own wheelchair.
  • this wheelchair should also be collapsible so that it is easy to stow away. It must be required, both for reasons of manageability and the dead weight to be carried, that such a wheelchair is light in weight, but very stiff in the working position and also easy to assemble and disassemble.
  • two non-round stand tubes are folded up from a base group provided with castors, and their length can be telescopically changed by means of a hydraulic system.
  • the seat with backrest is built up over a pair of longitudinal rails, so that the seat can be adjusted both in height and moved in the longitudinal direction.
  • the seat itself consists of a seat frame with a foldable middle part, so that after using this middle part, the seat can be moved back over the toilet to use the toilet, so that the disabled do not leave the place on the wheelchair, but without help Can use the toilet with this wheelchair.
  • an axis is provided between the seat and the backrest, as well as between the seat and the stand tubes or the pair of rails arranged there, which is arranged transversely to the axis of symmetry of the wheelchair and which places the backrest on the seat and after the stand tubes have been pivoted away allowing the seat plate to be placed on the floor assembly.
  • a disadvantage of this known wheelchair is that the use of the single pair of uprights, as well as the use of the rails for moving the seat, requires a very stable and thus also heavy construction, so that the seat, together with the necessary hydraulic device, becomes very heavy and is therefore difficult to handle.
  • This difficult handling applies not only to the assembly and disassembly of the wheelchair, but also to the manipulations that have to be carried out by the disabled himself, especially when using the toilet.
  • the invention has set itself the task of specifying a wheelchair of the aforementioned type, which is light in weight and yet so stable that it meets all the requirements to be placed on it, which is easy to use and which is easy to use even by a disabled person necessary manipulations.
  • the seat frame in the position in which the seat is located above the floor assembly is supported with its rear edge on the rear pair of struts and in that the support body has a front pair of struts that have one end of each strut is articulated on the front edge of the seat frame and with the other end of each strut perpendicularly and below about half the seat frame depth to the floor assembly, the articulated axes being arranged transversely to the plane of symmetry of the wheelchair.
  • the toilets for example in aircraft and land vehicles, are also designed with fixed struts on the side walls of the toilet cubicles, which allow the seat panel to be pushed back and forth.
  • the pivoting of the seat plate can in turn be carried out by pivoting the front pair of struts, again reaching the end position of the seat plate is supported by the fact that it is pulled into this end position by gravity.
  • This not only has the advantage that this end position is safely reached, but the weight loading the seat can now also be used to guide the lowered middle part of the seat up and into its end position parallel to the seat plate and to lock it there.
  • this seat middle part that is to say folding down and returning to the seat plane level, presents very great difficulties, difficulties which cannot be mastered by most disabled people.
  • this seat center part is automatically folded down when the seat plate is moved back and likewise, in connection with the forward movement of the seat plate, is guided back into the end position without any special manipulations by the disabled.
  • the rear pair of struts is a guide rail for the seat middle part provided on both sides with guide bolts at the free end, so that the seat middle part on these struts sink down by means of its guide bolts, i.e. release the seat plate for toilet use and by pushing the seat frame forward, this seat plate again, again guided by the guide bolts running along the rear pair of struts, can close.
  • the pivoting movement of the front pair of struts ensures that the seat plate always moves into its end position and generally remains there, but it is nevertheless advisable to lock the seat plate in these end positions.
  • this can be carried out in such a way that a locking bolt attached to the struts of the rear pair of struts and in each case a guide bolt of the seat middle part comprising a locking claw is attached to both sides of the rear edge of the seat frame. With this locking claw, the seat plate for transporting the disabled on the wheelchair is locked.
  • a lock can be provided on the front edge of the seat frame in order to fix the seat plate in this position even in the retracted end position. It is very useful in this case to make the locking claws self-latching in order to save the handicapped person the trouble of locking the locking claw.
  • both the seat frame and the seat middle part can be made of, optionally reinforced, plastic, since these parts rest securely on the front pair of struts and on the roller lying on the toilet during longitudinal displacement, i.e. mechanically hardly be burdened. This makes it possible to easily carry out these structural parts in terms of weight.
  • two support struts pointing downwards / forwards in the working position are to be articulated in the center on the front edge of the seat frame, which end feet support a footrest.
  • the distance between the two support struts should be slightly smaller than that of the struts of the front pair of struts so that these support struts together with the footrest can be retracted between the struts of the front pair of struts when the wheelchair is folded.
  • the footrest is expediently designed like a shovel, ie it consists of a support plate, the side edges and the rear edge of which are bent up, as a result of which the feet of the disabled are certainly prevented from slipping off from this foot support or from this support plate.
  • a support bracket bridging the distance from the support plate to the floor in a disconnected position is pivotably attached below the support plate.
  • This support bracket should be appropriately attached so that it goes to the rear. can be swiveled so that the wheelchair cannot be moved when the floor is uneven.
  • the articulation axis on the seat frame for the front strut pair and / or for the middle seat part and / or for the support struts is advantageously designed as a handle for the folded wheelchair.
  • a front strut pair 3 and a rear strut pair 4 are articulated to a floor assembly 1, at the corner points of which two steering wheel pairs 2 are attached.
  • the struts of the rear pair of struts 4 are attached to pillars 5 which protrude from the floor assembly 1.
  • the struts of the pair of struts 3 are articulated directly to the floor assembly 1, for example when soldering through half the land of a seat plate 6 which is supported by the strut pairs 3, 4.
  • the struts of the pair of struts 3 are articulated on the front edge of the seat plate 6; at the rear edge of this seat plate 6, it is supported on the end points of the struts of the pair of struts 4.
  • a transverse roller 7 is provided, which is arranged in a slot 8 in a height-adjustable manner. With this height adjustment, the transverse roller 7 can also be inserted at a slight angle in order to be able to compensate for unevenness in the toilet surface or the floor in front of it.
  • a terminal hump 9 of the seat plate 6 is the pivot point for a backrest 10 with pivotable armrests 11.
  • Support struts 12 are articulated on the front edge of the seat plate 6, which support a support plate 13, which serves as a footrest.
  • Lockable locking blocks 15 are also provided on the floor assembly 1 and are used to fix the wheelchair.
  • the seat plate 6 To use a toilet 16 (dash-dotted lines in Fig. 2), the seat plate 6 must be able to be moved backwards, like that; 2 can be seen. For this purpose, the locking of the seat plate 6 with the struts of the strut pair 4 is released by buttons 17, so that now the seat plate, which rests with the rear roller 7 on the upper edge of the toilet seat 16, can be moved to the rear, the struts moving of the pair of struts 3, as in Fig. 2 indicated by dash-dotted lines, swivel.
  • This pivoting has the advantage that the seat plate 6 is lowered slightly in each of the end positions, ie it moves with certainty into this end position.
  • a seat middle part 18 is also released by pressing the button 17, whereby this seat middle part 18, sliding with guide bolts 19 on the struts of the pair of struts 4, can reach the position shown in FIG. 2.
  • the guide bolts 19 slide on the back of the struts of the pair of struts 4, so that the seat middle part 18 is guided or pulled back into its previous position.
  • an adjustable stop 20 is attached, which ensures the exact start of the toilet, so that the transverse roller 7 rests on the toilet surface, so the seat plate 6 can be moved without difficulty.
  • Fig. 4 the wheelchair according to the invention is shown in a folded state.
  • these support struts 12 are retracted between the struts of the strut pair 3 and then, after releasing the lock between the seat plate 6 and the struts of the strut pair 4, the seat plate is lowered onto the floor assembly 1.
  • the backrest 10 is placed on the seat plate 6 and then the struts of the pair of struts 4 are placed on the package and locked in this position.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Non-Flushing Toilets (AREA)
  • Seats For Vehicles (AREA)

Description

Die Erfindung betrifft einen zusammenlegbaren Rollstuhl für Behinderte mit einer Bodengruppe, die an den Eckpunkten Lenkrollen aufweist, mit einem Sitz mit Rückenlehne, welcher aus einem festen Sitzrahmen und aus einem um eine bei der Sitzvorderkante angeordnete Achse nach unten klappbaren Mittelteil besteht, mit einem zwischen der Bodengruppe und dem Sitz angeordneten Tragkörper, der ein hinteres Strebenpaar aufweist, welches mit dem hinteren Bereich der Bodengruppe und dem Sitz jeweils gelenkig verbunden ist, wobei der Sitz auf dem hinteren Strebenpaar horizontal verschiebbar ist und die Gelenkachsen quer zur Symmetrieebene des Rollstuhls angeordnet sind, welches in der ausgeklappten Stellung des Rollstuhls etwa senkrecht von der Rodengruppe absteht, und welches in einer etwa parallel zur Bodengruppe verlaufenden Klappstellung arretierbar ist, und mit mindestens einer an der Hinterkante des Sitzrahmens mit einer Achse quer zur Svmmetrieebene des Rollstuhls angeordneten Rolle.The invention relates to a collapsible wheelchair for the disabled with a floor assembly, which has castors at the corner points, with a seat with a backrest, which consists of a fixed seat frame and a foldable down about an axis arranged at the front edge of the seat, with a between the Floor assembly and the seat arranged support body, which has a rear pair of struts, which is articulated to the rear area of the floor assembly and the seat, the seat on the rear pair of struts is horizontally displaceable and the articulated axes are arranged transversely to the plane of symmetry of the wheelchair, which in the unfolded position of the wheelchair protrudes approximately vertically from the lifting group, and which can be locked in a folding position running approximately parallel to the floor group, and with at least one roller arranged on the rear edge of the seat frame with an axis transverse to the symmetry plane of the wheelchair.

Derartige zusammenlegbare Rollstühle werden insbesondere bei der Benutzung von Fahrzeugen - Land-, Luft- und Wasserfahrzeugen - durch Behinderte benötigt, die in den Fahrgasträumen dieser Fahrzeuge infolge der beengten Verhältnisse ihren eigenen, unter Umständen individuell für sie konstruierten Behinderten-Rollstuhl nicht benutzen können. Insbesondere wird dieser zusammenlegbare Rollstuhl benötigt, um den Behinderten die Benutzung der Fahrzeugtoiletten zu ermöglichen, was, wiederum durch die beengten Platzverhältnisse, selbst dann nicht möglich wäre, wenn die Behinderten ansonsten ihren eigenen Rollstuhl benutzen könnten. Ebenfalls wieder aus Gründen der Raumausnutzung soll dieser Rollstuhl auch zusammenlegbar sein, so daß er unschwer zu verstauen ist. Gefordert werden muß, sowohl aus Gründen der Handlichkeit wie auch des mitzuführenden Totgewichtes, daß ein derartiger Rollstuhl gewichtsmäßig leicht, in Arbeitsstellung jedoch sehr steif und auch leicht auf- und abzubauen ist.Such collapsible wheelchairs are particularly needed when using vehicles - land, air and water vehicles - by disabled people who cannot use their own disabled wheelchair, which may have been individually designed for them, in the passenger compartments of these vehicles due to the cramped conditions. In particular, this collapsible wheelchair is required to enable the disabled to use the vehicle toilets, which, again due to the limited space, would not be possible even if the disabled could otherwise use their own wheelchair. Also for reasons of space utilization, this wheelchair should also be collapsible so that it is easy to stow away. It must be required, both for reasons of manageability and the dead weight to be carried, that such a wheelchair is light in weight, but very stiff in the working position and also easy to assemble and disassemble.

Bei einer aus der DE-A-3 121 127 bekannten derartigen Konstruktion werden aus einer mit Lenkrollen versehenen Bodengruppe zwei unrunde Ständerrohre hochgeklappt, die mittels einer Hydraulik in ihrer Länge teleskopartig verändert werden können. Auf diesen Ständerrohren ist der Sitz mit Rückenlehne über ein längsliegendes Schienenpaar aufgebaut, so daß der Sitz sowohl in der Höhe verstellt, wie auch in Löngsrichtung verschoben werden kann. Der Sitz selbst besteht hierbei aus einem Sitzrahmen mit einem abklappbaren Mittelteil, so daß zur Toilettenbenutzung, nach Abklappen dieses Mittelteils, die Sitzfläche nach hinten über die Toilette verschoben werden kann, daß die Behinderten also nicht den Platz auf dem Rollstuhl verlassen, sondern ohne Hilfe die Toilette mittels dieses Rollstuhls benutzen können.In a construction of this type known from DE-A-3 121 127, two non-round stand tubes are folded up from a base group provided with castors, and their length can be telescopically changed by means of a hydraulic system. On these stand tubes, the seat with backrest is built up over a pair of longitudinal rails, so that the seat can be adjusted both in height and moved in the longitudinal direction. The seat itself consists of a seat frame with a foldable middle part, so that after using this middle part, the seat can be moved back over the toilet to use the toilet, so that the disabled do not leave the place on the wheelchair, but without help Can use the toilet with this wheelchair.

Um diesen Rollstuhl zusammenlegen zu können, ist zwischen Sitz und Rückenlehne, wie auch zwischen dem Sitz und den Ständerrohren beziehungsweise dem dort angeordneten Schienenpaar je eine quer zur Symmetrieachse des Rollstuhls angeordnete Achse vorgesehen, die das Auflegen der Rückenlehne auf den Sitz und nach Wegschwenken der Ständerrohre das Auflegen der Sitzplatte auf die Bodengruppe erlaubt.In order to be able to fold this wheelchair, an axis is provided between the seat and the backrest, as well as between the seat and the stand tubes or the pair of rails arranged there, which is arranged transversely to the axis of symmetry of the wheelchair and which places the backrest on the seat and after the stand tubes have been pivoted away allowing the seat plate to be placed on the floor assembly.

Nachteilig bei diesem bekannten Rollstuhl ist, daß die Verwendung des einzelnen Ständerrohrpaares, wie auch die Verwendung der Schienen zum Verfahren des Sitzes, eine sehr stabile und damit auch schwere Konstruktion erfordert, daß der Sitz also, zusammen mit der notwendigen Hydraulikeinrichtung, doch sehr schwer wird und damit auch schwierig zu handhaben ist. Diese schwierige Handhabung gilt nicht nur für das Auf- und Abmontieren des Rollstuhls, sondern auch für die Manipulationen, die vom Behinderten selbst, insbesondere bei der Toilettenbenutzung, vorgenommen werden müssen. Die Erfindung hat sich die Aufgabe gestellt, einen Rollstuhl der vorbenannten Art anzugeben, der gewichtsmäßig leicht und trotzdem so stabil ist, daß er sämtlichen an ihn zu stellenden Anforderungen genügt, der einfach zu handhaben ist und der auch bei der Benutzung durch einen Behinderten unschwer die notwendigen Manipulationen zuläßt.A disadvantage of this known wheelchair is that the use of the single pair of uprights, as well as the use of the rails for moving the seat, requires a very stable and thus also heavy construction, so that the seat, together with the necessary hydraulic device, becomes very heavy and is therefore difficult to handle. This difficult handling applies not only to the assembly and disassembly of the wheelchair, but also to the manipulations that have to be carried out by the disabled himself, especially when using the toilet. The invention has set itself the task of specifying a wheelchair of the aforementioned type, which is light in weight and yet so stable that it meets all the requirements to be placed on it, which is easy to use and which is easy to use even by a disabled person necessary manipulations.

Erreicht wird dies in erfindungsgemäßer Weise dadurch, daß sich der Sitzrahmen in der Stellung, in welcher sich der Sitz oberhalb der Bodengruppe befindet, mit seiner Hinterkante auf dem hinteren Strebenpaar abstützt und daß der Tragkörper ein vorderes Strebenpaar aufweist, das mit dem einen Ende jeder Strebe an der Vorderkante des Sitzrahmens und mit dem anderen Ende jeder Strebe lotrecht und unterhalb etwa der halben Sitzrahmentiefe an der Bodengruppe angelenkt ist, wobei die Gelenkachsen quer zur Symmetrieebene des Rollstuhls angeordnet sind.This is achieved in a manner according to the invention in that the seat frame in the position in which the seat is located above the floor assembly is supported with its rear edge on the rear pair of struts and in that the support body has a front pair of struts that have one end of each strut is articulated on the front edge of the seat frame and with the other end of each strut perpendicularly and below about half the seat frame depth to the floor assembly, the articulated axes being arranged transversely to the plane of symmetry of the wheelchair.

Nicht mehr also wie bei dem bekannten Rollstuhe wird lediglich ein Ständerrohrpaar vorgesehen, das äußerst schwer und stabil auszuführen ist um den Belastungen standhalten zu können, sondern der Sitz mit Rückenlehne wird auf einen Tragkörper aufgesetzt, der aus zwei Strebenpaaren besteht, die an der Vorder-und Hinterkante des Sitzes angreifen. Da bestimmungsgemäß der Fußpunkt des vorderen Stebenpaares etwa auf dem Lot der halben Sitztjefe an der Bodengruppe liegen soll, kann der Sitz mit Rückenlehne nach Lösen der Arretierung nach hinten verschwenkt werden, wobei sich bei der Anfangsbewegung der Sitz etwas anhebt, jedoch in seine hintere Arbeitslage herunterfällt, also sicher seine hintere Arbeitslage erreicht. Dieses Verschwenken der Sitzplatte kann den Behinderten durchaus zugemutet werden, da im allgemeinen deren obere Extremitäten noch voll funktionsfähig sind. Unter diesem Gesichtspunkt sind auch die Toiletten, beispielsweise in Flugzeugen und Landfahrzeugen, ausgelegt, mit festen Streben an den Seitenwänden der Toilettenkabinen, die dieses Vor- und Zurückschieben der Sitzplatte zulassen. In entsprechend umgekehrter Reihenfolge kann das Verschwenken der Sitzplatte wiederum durch Verschwenken des vorderen Strebenpaares erfolgen, wobei auch wieder das Erreichen der Endstellung der Sitzplatte dadurch unterstützt wird, daß sie durch die Schwerkraft in diese Endlage gezogen wird. Dies hat nicht nur den Vorteil, daß sicher diese Endlage erreicht wird, sondern es kann nun auch das den Sitz belastende Gewicht ausgenutzt werden, um den abgesenkten Sitzmittelteil hoch und in seine parallel zur Sitzplattte liegende Endlage zu führen und dort zu verriegeln. Es hat sich bei den zum Stande der Technik gehörenden Rollstühlen gezeigt, daß gerade die Bedienung dieses Sitzmittelteils, also das Abklappen und das Rückführen in die Sitzplattenebene, sehr große Schwierigkeiten bereitet, Schwierigkeiten, die von den meisten Behinderten nicht gemeistert werden können. Bei der Konstruktion nach der Erfindung hingegen wird dieses Sitzmittelteil automatisch beim Zurückfahren der Sitzplatte abgleklappt und ebenso, verbunden mit der Vorfahrbewegung der Sitzplatte, wieder in die Endstellung geführt, ohne daß es hierbei besonderer Manipulationen durch die Behinderten bedarf.No longer, as with the known wheelchairs, only a pair of upright tubes is provided, which is extremely heavy and stable to withstand the loads, but the seat with backrest is placed on a support body, which consists of two pairs of struts, which are on the front and the rear edge of the seat. Since the foot point of the front pair of struts is intended to lie approximately on the plumb line of half of the seats on the floor assembly, the seat with backrest can be swiveled backwards after releasing the lock, the seat lifting slightly during the initial movement, but falling into its rear working position , thus safely reached its rear working position. This pivoting of the seat plate can be expected of the handicapped, since in general their upper extremities are still fully functional. From this point of view, the toilets, for example in aircraft and land vehicles, are also designed with fixed struts on the side walls of the toilet cubicles, which allow the seat panel to be pushed back and forth. In a corresponding reverse order, the pivoting of the seat plate can in turn be carried out by pivoting the front pair of struts, again reaching the end position of the seat plate is supported by the fact that it is pulled into this end position by gravity. This not only has the advantage that this end position is safely reached, but the weight loading the seat can now also be used to guide the lowered middle part of the seat up and into its end position parallel to the seat plate and to lock it there. It has been shown in the wheelchairs belonging to the prior art that the operation of this seat middle part, that is to say folding down and returning to the seat plane level, presents very great difficulties, difficulties which cannot be mastered by most disabled people. In the construction according to the invention, however, this seat center part is automatically folded down when the seat plate is moved back and likewise, in connection with the forward movement of the seat plate, is guided back into the end position without any special manipulations by the disabled.

Hierzu wird nach der Erfindung vorgeschlagen, daß das hintere Strebenpaar eine Führungsschiene für das am freien Ende beidseits mit Führungsbolzen versehene Sitzmittelteil ist, so daß das Sitzmittelteil an diesen Streben mittels seiner Führungsbolzen herabsinken, also die Sitzplatte zur Toilettenbenutzung freigeben und durch Vorschieben des Sitzrahmens diese Sitzplatte wieder, wiederum geführt durch die an dem hinteren Strebenpaar entlanglaufenden Führungsbolzen, verschließen kann.For this purpose, it is proposed according to the invention that the rear pair of struts is a guide rail for the seat middle part provided on both sides with guide bolts at the free end, so that the seat middle part on these struts sink down by means of its guide bolts, i.e. release the seat plate for toilet use and by pushing the seat frame forward, this seat plate again, again guided by the guide bolts running along the rear pair of struts, can close.

Durch die Verschwenkbewegung des vorderen Strebenpaares ist zwar dafür gesorgt, daß sich die Sitzplatte stets in ihre Endstellung bewegt und im allgemeinen dort verharrt, jedoch empfiehlt es sich trotzdem, die Sitzplatte in diesen Endstellungen zu arretieren. Nach der Erfindung kann dies so durchgeführt werden, daß beidseits an der Sitzrahmen-Hinterkante eine in Arbeitsstellung einen an den Streben des hinteren Strebenpaares angebrachten Arretierbolzen und jeweils einen Führungsbolzen des Sitzmittelteils unfassende Arretierklaue angebracht ist. Durch diese Arretierklaue ist also die Sitzplatte zum Transportieren des Behinderten auf dem Rollstuhl irretiert. Gleichfalls kann eine solche Arretierung such an der Vorderkante des Sitzrahmens vorgesehen werden, um auch in der zurückgefahrenen Endstellung die Sitzplatte in dieser Stellung zu fixieren. Sehr zweckmäßig ist hierbei, die Arretierklauen selbstverklinkend auszuführen, um dem Behinderten die Mühe des Feststellens der Arretierklaue zu ersparen.The pivoting movement of the front pair of struts ensures that the seat plate always moves into its end position and generally remains there, but it is nevertheless advisable to lock the seat plate in these end positions. According to the invention, this can be carried out in such a way that a locking bolt attached to the struts of the rear pair of struts and in each case a guide bolt of the seat middle part comprising a locking claw is attached to both sides of the rear edge of the seat frame. With this locking claw, the seat plate for transporting the disabled on the wheelchair is locked. Likewise, such a lock can be provided on the front edge of the seat frame in order to fix the seat plate in this position even in the retracted end position. It is very useful in this case to make the locking claws self-latching in order to save the handicapped person the trouble of locking the locking claw.

Festzustellen ist, daß bei der erfindungsgemäßen Konstruktion sowohl der Stitzrahmen, wie auch das Sitzmittelteil aus, gegebenenfalls verstärktem, Kunstoff ausgeführt werden kann, da diese Teile sicher auf dem vorderen Strebenpaar und der, bei der Längsverschiebung auf der Toilette aufliegenden Rolle, aufliegen, also mechanisch kaum belastet werden. Damit ist die Möglichkeit gegeben, diese Konstruktionsteile gewichtsmäßig leicht auszuführen.It should be noted that in the construction according to the invention, both the seat frame and the seat middle part can be made of, optionally reinforced, plastic, since these parts rest securely on the front pair of struts and on the roller lying on the toilet during longitudinal displacement, i.e. mechanically hardly be burdened. This makes it possible to easily carry out these structural parts in terms of weight.

Es empfiehlt sich, das Sitzmittelteil mit Abstand in den freien Raum des Sitzrahmens einzufügen, nicht nur um damit nochmals Gewicht einzusparen, sondern ein ungehindertes. Einfahren des Sitzmittelteils in die Sitzplattenebene zu ermöglichen und auf jeden Fall das Einklemmen von Bekleidungsstücken und Körperteilen zu vermeiden.It is advisable to insert the center part of the seat at a distance into the free space of the seat frame, not only to save weight again, but an unobstructed one. To allow the seat center part to be retracted into the seat plate level and to avoid pinching clothing and body parts.

Nach der Erfindung sollen mittig an der Sitzrahmen-Vorderkante zwei in Arbeitsstellung nach unten/vorne weisende Stützstreben angelenkt sein, die endständing eine Fußstütze tragen. Der Abstand der beiden Stützstreben voneinander soll hierbei geringfügig kleiner sein als derjenige der Streben des vorderen Strebenpaares, damit diese Stützstreben mitsamt der Fußstütze zwischen die Strehen des vorderen Strebenpaares beim Zusammenlegen des Rollstuhles eingefahren werden können. Zweckmäßigerweise wird hierbei die Fußstütze schaufelartig ausgeführt, besteht also aus einem Stützblech, dessen Seitenkanten und dessen Hinterkante hochgebogen ist, wodurch das Abrutschen der Füßs Behinderten von dieser Fußstützt beziehungsweise von diesem Stützblech mit Sicherheit vermieden wird. Um ein Kippen des Rollstuhls bei der Belastung dieser Fußstütze zu vermeiden, wird nach der Erfindung weiterhin vorgeschlagen, daß unterhalb des Stützblechs ein in abgeklapter Stellung der Abstand vom Stützblech zum Boden überbrückender Stützbügel verschwenkbar angebracht ist. Dieser Stützbügel soll zweckmäßigerweise so angebracht sein, daß er nach hinten weg. schwenkbar ist, um bei unebenem Boden das Verschieben des Rollstuhls nicht zu behindern.According to the invention, two support struts pointing downwards / forwards in the working position are to be articulated in the center on the front edge of the seat frame, which end feet support a footrest. The distance between the two support struts should be slightly smaller than that of the struts of the front pair of struts so that these support struts together with the footrest can be retracted between the struts of the front pair of struts when the wheelchair is folded. The footrest is expediently designed like a shovel, ie it consists of a support plate, the side edges and the rear edge of which are bent up, as a result of which the feet of the disabled are certainly prevented from slipping off from this foot support or from this support plate. In order to prevent the wheelchair from tipping over when this footrest is loaded, it is further proposed according to the invention that a support bracket bridging the distance from the support plate to the floor in a disconnected position is pivotably attached below the support plate. This support bracket should be appropriately attached so that it goes to the rear. can be swiveled so that the wheelchair cannot be moved when the floor is uneven.

Andererseits muß auch dafür gesorgt werden können, daß der Rollstuhl in einer bestimmten Lage fixiert wird, daß er also nicht unbeabsichtigt wegrollt. Nach der Erfindung wird dies dadurch erreicht, daß bei den Eckpunkten der Bodengruppe nach unten ausfahrbare und in der Ruhe- und in der Ausfahrlage feststellbare Arretierkloben angebracht sind.On the other hand, it must also be possible to ensure that the wheelchair is fixed in a certain position so that it does not roll away unintentionally. According to the invention, this is achieved in that at the corner points of the floor assembly extendable locking brackets are attached in the rest and in the extended position.

Mit Vorteil wird die Anlenkachse am Sitzrahmen für das vordere Strebenpaar und/oder für das Sitzmittelteil und/oder für die Stützstreben als Tradegriff für den zusammengelegten Rollstuhl ausgebildet.The articulation axis on the seat frame for the front strut pair and / or for the middle seat part and / or for the support struts is advantageously designed as a handle for the folded wheelchair.

Auf der Zeichnung ist ein Ausführungsbeispiel des Rollstuhls nach der Erfindung schematisch dargestellt, und zwar zeigen:

  • Fig. 1 den Rollstuhl in Gebrauchslage in Seitenansicht,
  • Fig. 2 den gleichen Rollstuhl mit zurückgefahrener Sitzplatte,
  • Fig. 3 eine Unteransicht der Sitzplatte und
  • Fig. 4 den zusammengelegten Rollstuhl.
In the drawing is an embodiment of the wheelchair according to the invention shown schematically, namely:
  • 1 shows the wheelchair in the use position in a side view,
  • 2 the same wheelchair with retracted seat plate,
  • Fig. 3 is a bottom view of the seat plate and
  • Fig. 4 the folded wheelchair.

An einer Bodengruppe 1, an deren Eckpunkten zwei Lenkradpaare 2 angebracht sind, ist ein vorderes Strebenpaar 3 und ein hinteres Strebenpaar 4 angelenkt. Die Streben des hinteren Strebenpaares 4 sind an Pfeilern 5, die aus der Bodengruppe 1 herausragen, angebracht. Die Streben des Strebenpaares 3 sind unmittelbar an der Bodengruppe 1 angelenkt, etwa beim Lot durch die halbe Lände einer Sitzplatte 6, die durch die Strebenpaare 3, 4 getragen wird. Hierbei sind die Streben des Strebenpaares 3 an der Vorderkante der Sitzplatte 6 angelenkt; bei der Hinterkante dieser Sitzplatte 6 stützt sie sich auf den Endpunkten der Streben des Strebenpaares 4 ab. An der Hinterkante der Sitzplatte 6 ist eine querliegende Rolle 7 vorgesehen, die höheverstellbar in einem Schlitz 8 angeordnet ist. Durch diese Höhenverstellung kann die querliegende Rolle 7 auch leicht schräg eingefügt werden, um Unebenheiten der Toilettenoberfläche beziehungsweise des davor befindlichen Fußbodens ausgleichen zu können. An einem endständigen Höcker 9 der Sitzplatte 6 befindet sich der Anlenkpunkt für eine Rückenlehne 10 mit verschwenkbaren Armlehnen 11. An der Vorderkante der Sitzplatte 6 sind Stützstreben 12 angelenkt, die ein Stützblech 13, das als Fußstütze dient, tragen. An der Unterseite dieses Stützbleches 13 befindet sich ein Stützbügel 14, der den Abstand zwischen der Unterseite des Stützbleches 13 und dem Fußboden überbrückt. Sowohl das Stützblech 13, wie auch der Stützbügel 14 sind gelenkig mit ihren Konstruktionsteilen verbunden, um das Zusammenlegen auf kleinstem Raum zu ermöglichen. An der Bodengruppe 1 sind noch feststellbare Arretierkloben 15 vorgesehen, die zum Festsetzen des Rollstuhls dienen.A front strut pair 3 and a rear strut pair 4 are articulated to a floor assembly 1, at the corner points of which two steering wheel pairs 2 are attached. The struts of the rear pair of struts 4 are attached to pillars 5 which protrude from the floor assembly 1. The struts of the pair of struts 3 are articulated directly to the floor assembly 1, for example when soldering through half the land of a seat plate 6 which is supported by the strut pairs 3, 4. Here, the struts of the pair of struts 3 are articulated on the front edge of the seat plate 6; at the rear edge of this seat plate 6, it is supported on the end points of the struts of the pair of struts 4. At the rear edge of the seat plate 6, a transverse roller 7 is provided, which is arranged in a slot 8 in a height-adjustable manner. With this height adjustment, the transverse roller 7 can also be inserted at a slight angle in order to be able to compensate for unevenness in the toilet surface or the floor in front of it. At a terminal hump 9 of the seat plate 6 is the pivot point for a backrest 10 with pivotable armrests 11. Support struts 12 are articulated on the front edge of the seat plate 6, which support a support plate 13, which serves as a footrest. On the underside of this support plate 13 there is a support bracket 14 which bridges the distance between the underside of the support plate 13 and the floor. Both the support plate 13 and the support bracket 14 are connected in an articulated manner to their structural parts in order to enable them to be folded up in the smallest space. Lockable locking blocks 15 are also provided on the floor assembly 1 and are used to fix the wheelchair.

Zur Benutzung einer Toilette 16 (in Fig. 2 strichpunktiert eingezeichnet) muß die Sitzplatte 6 nach hinter verschoben werden können, wie die; aus Fig. 2 ersichtlich ist. Hierzu wird durch Tasten 17 die Arretierung der Sitzplatte 6 mit, den Streben des Strebenpaares 4 gelöst, so daß nunmehr die Sitzplatte, die mit der rückseitigen Rolle 7 auf dem oberen Rand des Toilettensitzes 16 aufliegt, nach hinter verschoben werden kann, wobei sich die Streben des Strebenpaares 3, wie in Fig,. 2 strichpunktiert angedeutet, verschwenken. Dieses Verschrwenken hat den Vorteil, daß jeweils in den Endlagen die Sitzplatte 6 geringfügig abgesenkt wird, sich also mit Sicherheit in diese Endlage bewegt. Vor dem Verschieben der Sitzplatte 6 wird ein Sitzmittelteil 18 ebenfalls durch Drücken der Taste 17 gelöst, wodurch dieses Sitzmittelteil 18, mit Führungsbolzen 19 an den Streben des Strebenpaares 4 gleitend, in die in Fig. 2 dargestellte Lage gelangen kann. Beim Vorschieben der Sitzplatte 6 gleiten die Führungsbolzen 19 an der Rückseite der Streben des Strebenpaares 4, so daß das Sitzmittelteil 18 wieder in seine vorherige Lage geführt beziehungsweise gezogen wird. Dadurch sind umständliche zusätzliche Manipulationen zur Veränderung der Stellung dieses Sitzmittelteils 18 nicht notwendig. An der Hinterkante der Bodengruppe 1 ist ein justierbarer Anschlag 20 angebracht, der das exakte Anfahren der Toilette gewährleistet, so daß die querliegende Rolle 7 auf der Toiletten-Oberfläche aufliegt, die Sitzplatte 6 also ohne Schwierigkeiten verfahren werden kann.To use a toilet 16 (dash-dotted lines in Fig. 2), the seat plate 6 must be able to be moved backwards, like that; 2 can be seen. For this purpose, the locking of the seat plate 6 with the struts of the strut pair 4 is released by buttons 17, so that now the seat plate, which rests with the rear roller 7 on the upper edge of the toilet seat 16, can be moved to the rear, the struts moving of the pair of struts 3, as in Fig. 2 indicated by dash-dotted lines, swivel. This pivoting has the advantage that the seat plate 6 is lowered slightly in each of the end positions, ie it moves with certainty into this end position. Before moving the seat plate 6, a seat middle part 18 is also released by pressing the button 17, whereby this seat middle part 18, sliding with guide bolts 19 on the struts of the pair of struts 4, can reach the position shown in FIG. 2. When the seat plate 6 is pushed forward, the guide bolts 19 slide on the back of the struts of the pair of struts 4, so that the seat middle part 18 is guided or pulled back into its previous position. As a result, cumbersome additional manipulations for changing the position of this seat middle part 18 are not necessary. At the rear edge of the floor assembly 1, an adjustable stop 20 is attached, which ensures the exact start of the toilet, so that the transverse roller 7 rests on the toilet surface, so the seat plate 6 can be moved without difficulty.

In Fig. 4 ist der Rollstuhl nach der Erfindung in zusammengelegtem Zustand dargestellt. Nach Anklappen des Stützbügels 14 und der Fußstütze 13 an die Stützstreben 12 werden diese Stützstreben 12 ziwischen die Streben des Strebenpaares 3 eingefahren und sodann, nach Lösen der Verriegelung zwischen der Sitzplatte 6 und den Streben des Strebenpaares 4, die Sitzplatte auf die Bodengruppe 1 abgesenkt. Sodann wird die Rückenlehne 10 auf die Sitzplatte 6 aufgelegt und anschließend die Streben des Strebenpaares 4 auf das Paket aufgelegt und in dieser Lage verriegelt. Dadurch ergibt sich ein handliches "Paket", das beispielsweise an der Anlenkachse 21 ergriffen und unschwer getragen werden kann.In Fig. 4 the wheelchair according to the invention is shown in a folded state. After folding the support bracket 14 and the footrest 13 to the support struts 12, these support struts 12 are retracted between the struts of the strut pair 3 and then, after releasing the lock between the seat plate 6 and the struts of the strut pair 4, the seat plate is lowered onto the floor assembly 1. Then the backrest 10 is placed on the seat plate 6 and then the struts of the pair of struts 4 are placed on the package and locked in this position. This results in a handy "package" that can be gripped, for example, on the articulation axis 21 and carried easily.

Claims (10)

1. A collapsible wheelchair for disabled persons, comprising a base unit (1) which has castor wheels (2) at the corner points, a seat (6) with backrest (10) which comprises a fixe seat frame and a middle portion (18) which is pivotable downwardly about an axis arranged at the front edge of the seat, a carrier body which is arranged between the base unit (1) und the seat (6) and which as a rear pair of struts (4), the struts being respectively pivotally connected to the rearward region of the base unit (1) and the seat (6) , wherein the seat is horizontally displaceable on the rear pair of struts (4) ad and the pivot axes are disposed transversely with respect to the plane of the wheelchair, and projecting substantially perpendicularly from the base unit (1) in the unfolded position of the wheelchair and being lockable in a folded position of extanding substantially parallel to the base unit (1), and at least one roller (7) which is arranged at the rearward edge of the seat frame with an axis transversely with respect to the plane of symmetry of the wheelchair, characterised in that in the position in which the seat is disposed above the base unit (1), the seat frame is supportad with its rearward edge on the rear pair of struts (4) and that the carrier body has a front pair of struts (3) which is connected with one end of each strut to the forward edge of the seat frame and with the other end of each strut to the base unit (1) perpendicularly and below approximately half the depth of the seat frame, wherein the pivot axes are arranged trasversely with respect to the plane of symmetry of the wheelcair.
2. A wheelcair according to claim 1 characterised in that the rear pair of struts (4) is a guide rail for the middle portion (18) of the seat, which is provided with guide pins (19) at the free end on both sides.
3. A wheelcair according to claim 1 or claim 2 characterised in that disposed at both sides on the rearward edge of the seat frame is an arresting claw which in the operative position embraces a arresting pin provided on the struts of the rear pair (4) and a respective guide pin (19) of the middle portion (18) of the seat, and that disposed at both sides on the front edge of the seat frame is an arresting claw which in the position of the seat frame (6) in which it has been moved back, embraces the arresting pins on the struts of the rear pair (4).
4. A wheelchair according to one or more of the preceding claims characterised in that the middle portion (18) of the seat is inserted with a spacing into the free space of the seat frame (6).
5. A wheelchair according to claim 1 characterised in that connected centrally to the front edge (2) of the seat frame are support struts (12) which point downwardly/forwardly in the operative position and which carry a foot support at their ends and that the spacing of the outside edges of the support struts (12) from each other is slightly smaller the the spacing of the inside edges of the struts of the front pair (3) from each other.
6. A wheelchair according to claim 5 characterised in that the foot support is a support plate (13) which is bent up in a scoop-like configuration at the two side edges and at the rearward edge and which can be pivoted from the operative position between the two support struts (12) and fixed there.
7. A wheelchair according to claim 6 characterised in that a support loop (14) which in the folded-down position bridges over the spacing from the support plate (13) to the ground is pivotally mounted beneath the support plate (13).
8. A wheelchair according to one or more of the preceding claims characterised in that arresting blocks (15) are disposed at the corner points of the base unit (1) and can be extended downwardly and can be locked in the rest position and in the extended position.
9. A wheelchair according to claim 1 characterised in that the pivotal mounting axis (21) on the seat frame (6) for the front pair of struts (3) and/or for the middle portion (18) of the seat and/or for the support struts (12) is formed as a carrying handle for the collapsed wheelchair.
10. A wheelchair according to claim 1 characterised in that adjustable buffer surfaces (20) are disposed at the rearward edge of the base unit (1).
EP84111521A 1983-10-13 1984-09-27 Collapsible wheelchair Expired EP0138116B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833337263 DE3337263A1 (en) 1983-10-13 1983-10-13 FOLDING WHEELCHAIR
DE3337263 1983-10-13

Publications (3)

Publication Number Publication Date
EP0138116A2 EP0138116A2 (en) 1985-04-24
EP0138116A3 EP0138116A3 (en) 1985-11-27
EP0138116B1 true EP0138116B1 (en) 1987-08-12

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EP84111521A Expired EP0138116B1 (en) 1983-10-13 1984-09-27 Collapsible wheelchair

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US (1) US4607860A (en)
EP (1) EP0138116B1 (en)
JP (1) JPS60100964A (en)
DE (1) DE3337263A1 (en)

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DE3140014A1 (en) * 1981-10-08 1983-04-21 Wolfgang 4800 Bielefeld Schacht Wheelchair
US4514867A (en) * 1982-02-12 1985-05-07 Jensen Neil B Wheel chair with displaceable seat panel

Also Published As

Publication number Publication date
JPS60100964A (en) 1985-06-04
EP0138116A2 (en) 1985-04-24
US4607860A (en) 1986-08-26
JPH0239257B2 (en) 1990-09-04
DE3337263A1 (en) 1985-04-25
EP0138116A3 (en) 1985-11-27
DE3337263C2 (en) 1992-04-30

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