EP1437113B1 - Electrically driven wheelchair - Google Patents

Electrically driven wheelchair Download PDF

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Publication number
EP1437113B1
EP1437113B1 EP03028737A EP03028737A EP1437113B1 EP 1437113 B1 EP1437113 B1 EP 1437113B1 EP 03028737 A EP03028737 A EP 03028737A EP 03028737 A EP03028737 A EP 03028737A EP 1437113 B1 EP1437113 B1 EP 1437113B1
Authority
EP
European Patent Office
Prior art keywords
frame
seat
seat frame
electrically driven
driven wheelchair
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 - Lifetime
Application number
EP03028737A
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German (de)
French (fr)
Other versions
EP1437113A1 (en
Inventor
Jürgen Windmann
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 Wilhelm Meyer GmbH and Co KG
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Meyra Wilhelm Meyer GmbH and Co KG
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Filing date
Publication date
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Publication of EP1437113A1 publication Critical patent/EP1437113A1/en
Application granted granted Critical
Publication of EP1437113B1 publication Critical patent/EP1437113B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/045—Rear wheel drive
    • 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
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/08—Accommodating or securing wheelchairs or stretchers
    • A61G3/0808—Accommodating or securing wheelchairs
    • 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
    • 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1089—Anti-tip devices
    • 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1062—Arrangements for adjusting the seat adjusting the width of the seat
    • 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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards

Definitions

  • the invention relates to an electric wheelchair according to the preamble of the main claim.
  • the invention relates to an electric wheelchair for the disabled or sick with a chassis frame, which carries front wheels and rear wheels and with a mounted on the chassis frame seat.
  • Such a wheelchair is for example from the DE 44 20 877 C2 previously known.
  • Electric wheelchairs are technically sophisticated products that carry a variety of individual components, such as drive motors, gearbox, batteries, control units or the like. Accordingly, the manufacturing cost of such electric wheelchairs is very high. It is not only the pure production to be considered, but also the effort that is required for repairs, alterations or the like. In extreme cases, the entire electric wheelchair must be dismantled more or less completely in order to replace, replace and supplement individual components.
  • WO 92/08636 A From the WO 92/08636 A is a wheelchair frame previously known in which the seat from an upright sitting position in a tilted by 45 ° lying position is pivotable.
  • the US 5 156 226 A describes an electric wheelchair with a frame, which is composed of mutually mirror-image side frames and connecting cross struts. On the frame in a fixed assignment a seat can be placed, which is neither swivel nor adjustable. The dimensioning and positioning of the seat is thus given constructive.
  • the invention has for its object to provide an electric wheelchair of the type mentioned above, which is easy to assemble and disassemble with a simple design and simple, cost manufacturability while avoiding the disadvantages of the prior art and is characterized by a high degree of universal usability ,
  • the chassis frame comprises a right side frame and a left side frame, which are detachably connected to each other and are constructed substantially mirror images of each other.
  • the two frame parts of the side frames are, since they are designed essentially mirror-inverted, inexpensive to produce. Due to the detachable connection of the two side frames, it is possible to easily remove or assemble assemblies or elements that are located between the side frames in the chassis frame. So it is possible, for example, in the cultivation of electric Wegverstellantrieben to separate the two side frames in the simplest way from each other. It is particularly advantageous if the side frames are releasably screwed together.
  • the right and left side frames are detachably connected to each other by means of horizontal, transversely to the direction of travel arranged plug pipes.
  • the two plug pipes or the corresponding For insertion provided pipe ends of the side frame can form both the storage for the seat frame and for drive components of the rear wheels.
  • the rear plug-in tube can serve for gearbox mounting of a rear swinging arm, while the front plugging tube can form a support region of the seat frame.
  • the side frame comprises a top tube and a down tube.
  • the down tube may serve for the storage of drive components, such as a battery or the like, while the top tube supports a rear swing arm of the rear wheel and the seat frame.
  • the rear swing arm is designed as a trailing arm. It may be formed as a sheet metal part, sheet metal bent part or sheet metal stamped part and preferably carries at its rear end a Antikipprolle. Furthermore, it is possible to interpose a suspension and / or damping element between the rear swing arm and the respective side frame.
  • the rear swing arm preferably has a bearing tube with, for example, plastic plain bearings, which can be pushed onto the already mentioned Getriebelagerrohr (rear plug-in tube).
  • Getriebelagerrohr rear plug-in tube
  • the assembly of the rear swing arm can be done in the simplest way to the respective side frame. By assigning the two side frames to each other then also results in a corresponding assignment and fixation of the two rear swingarms.
  • the entire Assembly of the rear swing arm done with only a single screw, while all other components are designed as plug-in connections.
  • a seat frame supporting the seat is mounted on the chassis frame, which can be tilted about a horizontal axis. It is thus possible to adjust the inclination of the seat in a very simple manner.
  • the seat frame is preferably mounted on the electric wheelchair according to the invention so that a rear bearing portion is formed on the respective side frame, while the front portion of the seat frame is supported on the above-mentioned support area.
  • This support region can preferably be designed in the form of an adjustable telescopic tube, so that it is possible in the simplest way to adapt the inclination of the seat to the needs of the wheelchair user.
  • the seat frame is in the electric wheelchair according to the invention preferably from a right or a left seat frame half.
  • the two seat frame halves according to the invention preferably substantially mirror-inverted, so that the production cost considerably reduced.
  • the two seat frame halves can, at least in their front area, be screwed together by means of a Einsteckrohres.
  • the insert tube can serve to accommodate the support area (telescopic tube) for seat adjustment (seat tilt).
  • the whole Seat frame is thus tiltable or adjustable mounted on the chassis frame or main frame, the rear storage areas for the seat frame, which are provided on the respective side frame, at the same time serve for rear seat lock.
  • the side frames each have a front and a rear connection region, on which restraining straps can be fastened for transport in a disabled transport vehicle.
  • connection areas are realized, for example, by free pipe ends or by correspondingly curved areas, so that no further additional parts are required.
  • the graphic representations are CAD drawings. As a result, hidden lines, penetrations or the like are not dashed. Also missing, if necessary, hatching of cut parts.
  • the electric wheelchair according to the invention comprises two front wheels 1, which are each mounted rotatably about a vertical axis by means of a fork 22, as is known from the prior art.
  • the wheelchair further comprises two non-steerable rear wheels 2, which are each mounted on a rear swingarm 15.
  • the rear swing arm 15 is pivotally mounted about a bearing 14 of the respective side frame 4 and 5 respectively. It is constructed plate-shaped and serves to support a drive unit 19, which may include an engine and a transmission.
  • a suspension and / or damping element 17 is arranged on the rocker whose upper end portion is pivotally connected to a bearing block 24, which in turn is fixed to a top tube 12 of the respective side frame 4 and 5 respectively.
  • the two side frames 4 and 5 form a common chassis frame, which is shown in the plan view in Fig. 6.
  • the two side frames 4, 5 each comprise a top tube 12 and a down tube 13 (see also FIGS. 3 to 5).
  • the top tube 12 and the down tube 13 are directly connected to each other while in the area the storage of the rear swing arm (storage 14) strived accordingly.
  • At the rear end of the top tube 12 is bent by 90 °, so that there is a rear connection portion 21, on which a loop of a restraint belt can be pushed.
  • the curved front region of the respective top tube 12 can form a front connection region 20, to which a front restraint belt can be attached.
  • the two restraining straps serve to secure the electric wheelchair during transport, for example in a vehicle.
  • the two side frames 4 and 5 are plugged into each other. This is done by a (not directly visible in FIG. 6) inner front plug-in tube 8 and a rear plug-in tube 9, which penetrates the support or strut of the side frame in the region of the bearing 14 (see FIGS. 5 and 6).
  • chassis frame which is composed of the two side frames 4, 5
  • a sleeve 25 is slid or interposed, on which a telescopic support region 11 for a seat frame 7 is attached.
  • the telescopic tube of the support area 11 is adjustable by means of a lever 26 to pivot the seat frame 7 about a horizontal axis 6 which is formed on a rear bearing portion 10 of the top tube 12.
  • a comparison of Figs. 1 and 2 shows the different pivot or Kantel state.
  • the support region 11 can also be electrically adjustable, for example by means of a transmission or a linear drive.
  • the seat frame 7 is, as can be seen from the plan view of Fig. 7, composed of two seat frame halves 16, which can also be plugged and screwed.
  • the seat frame 7, which carries a seat 3, not shown in detail, can be easily assembled or disassembled.
  • the seat 3 with its seat cushion, its armrests, its side parts and its backrest essentially corresponds to the arrangements known from the prior art, so that further detailed descriptions can be dispensed with at this point.
  • the front portion of the seat frame 7 also carries leg supports 27 with treads 28. These are mounted in a conventional manner, adjustable in length and / or laterally pivotable. Again, reference is made to the known from the prior art constructions.
  • each of the side frames 4 and 5 each have a plug-in tube 29, in which the rear plug-in tube 9 can be inserted.
  • the figure structure is supported by an upper arc tube 31 and a strut 32 accordingly, so that the bearing 14 for the rear swing arm 15 results, which carries an anti-tipper wheel 18 at its end.
  • the entire structure of the chassis frame is thus very stable and robust and is by means of fewer screw that connect the front and the rear tube 8 and 9, solvable.
  • individual components such as a battery, not shown, which is on the lower tubes 13, easy to remove and install.
  • the electric wheelchair can also be adapted in a very simple manner to additional requirements, it can be additional components, control units or the like, installed or removed.
  • each side frame 4, 5 has at its front end region a bearing tube 30 on which the already described fork 22 of the front wheel 1 is mounted.
  • the invention is not limited to the embodiment shown.

Abstract

The electrically- propelled wheelchair has a symmetrical frame with upper (12) and lower (13) side frame members holding a motor driving the rear wheels (2). There is a swing-axle sprung suspension (17) with an extension arm (15) carrying anti-tipping safety wheels (18). There are small swiveling front wheels (1). The frame (16) for the seat (3) is supported on a tilting pivot (6) just behind its center of gravity. There is a tilt adjustment (11) at the front with a telescopic tube and a locking lever (26).

Description

Die Erfindung bezieht sich auf einen Elektro-Rollstuhl nach dem Oberbegriff des Hauptanspruchs.The invention relates to an electric wheelchair according to the preamble of the main claim.

Im Einzelnen betrifft die Erfindung einen Elektro-Rollstuhl für Behinderte oder Kranke mit einem Fahrwerksrahmen, welcher Vorderräder und Hinterräder trägt sowie mit einem an dem Fahrwerksrahmen gelagerten Sitz.In particular, the invention relates to an electric wheelchair for the disabled or sick with a chassis frame, which carries front wheels and rear wheels and with a mounted on the chassis frame seat.

Ein derartiger Rollstuhl ist beispielsweise aus der DE 44 20 877 C2 vorbekannt.Such a wheelchair is for example from the DE 44 20 877 C2 previously known.

Elektro-Rollstühle sind technisch ausgefeilte Produkte, die eine Vielzahl von Einzelkomponenten tragen, wie beispielsweise Antriebsmotoren, Getriebe, Batterien, Steuerungs- und Regelungseinheiten oder Ähnliches. Dementsprechend ist der Herstellungsaufwand für derartige Elektro-Rollstühle sehr hoch. Dabei ist nicht nur die reine Herstellung zu beachten, sondern auch der Aufwand, der bei Reparaturen, Umbaumaßnahmen oder Ähnlichem erforderlich ist. Im Extremfall muss der gesamte Elektro-Rollstuhl mehr oder weniger vollständig demontiert werden, um einzelne Baukomponenten auszutauschen, zu ersetzen und zu ergänzen.Electric wheelchairs are technically sophisticated products that carry a variety of individual components, such as drive motors, gearbox, batteries, control units or the like. Accordingly, the manufacturing cost of such electric wheelchairs is very high. It is not only the pure production to be considered, but also the effort that is required for repairs, alterations or the like. In extreme cases, the entire electric wheelchair must be dismantled more or less completely in order to replace, replace and supplement individual components.

Aus der WO 92/08636 A ist ein Rollstuhlrahmen vorbekannt, bei welchem der Sitz aus einer aufrechten Sitzposition in eine um 45° geneigte Liegeposition verschwenkbar ist.From the WO 92/08636 A is a wheelchair frame previously known in which the seat from an upright sitting position in a tilted by 45 ° lying position is pivotable.

Die US 5 156 226 A beschreibt einen Elektro-Rollstuhl mit einem Rahmen, der aus zueinander spiegelbildlichen Seitenrahmen und diese verbindenden Querstreben aufgebaut ist. Auf den Rahmen ist in fester Zuordnung ein Sitz aufsetzbar, der weder schwenkbar noch verstellbar ist. Die Dimensionierung und Positionierung des Sitzes ist somit konstruktiv vorgegeben.The US 5 156 226 A describes an electric wheelchair with a frame, which is composed of mutually mirror-image side frames and connecting cross struts. On the frame in a fixed assignment a seat can be placed, which is neither swivel nor adjustable. The dimensioning and positioning of the seat is thus given constructive.

Der Erfindung liegt die Aufgabe zugrunde, einen Elektro-Rollstuhl der eingangs genannten Art zu schaffen, welcher bei einfachem Aufbau und einfacher, kostengünstiger Herstellbarkeit unter Vermeidung der Nachteile des Standes der Technik einfach montierbar und demontierbar ist und sich durch ein hohes Maß an universeller Einsetzbarkeit auszeichnet.The invention has for its object to provide an electric wheelchair of the type mentioned above, which is easy to assemble and disassemble with a simple design and simple, cost manufacturability while avoiding the disadvantages of the prior art and is characterized by a high degree of universal usability ,

Erfindungsgemäß wird die Aufgabe durch die Merkmalskombination des Hauptanspruchs gelöst, die Unteransprüche zeigen weitere vorteilhafte Ausgestaltungen der Erfindung.According to the invention the object is achieved by the feature combination of the main claim, the subclaims show further advantageous embodiments of the invention.

Erfindungsgemäß ist somit vorgesehen, dass der Fahrwerksrahmen einen rechten Seitenrahmen und einen linken Seitenrahmen umfasst, welche lösbar miteinander verbunden sind und im Wesentlichen zueinander spiegelbildlich aufgebaut sind.According to the invention it is thus provided that the chassis frame comprises a right side frame and a left side frame, which are detachably connected to each other and are constructed substantially mirror images of each other.

Durch die erfindungsgemäß vorgesehene Ausgestaltung des Fahrwerksrahmens ergeben sich eine Vielzahl von Vorteilen.The inventively provided embodiment of the chassis frame, a variety of advantages.

Durch die Verwendung zweier Seitenrahmen kann der Bearbeitungs- und Montageaufwand erheblich gesenkt werden. Die beiden Rahmenteile der Seitenrahmen sind, da sie im Wesentlichen spiegelbildlich ausgestaltet sind, kostengünstig herstellbar. Durch die lösbare Verbindung der beiden Seitenrahmen ist es möglich, Baugruppen oder Elemente, die sich zwischen den Seitenrahmen in dem Fahrwerksrahmen befinden, einfach auszubauen oder zu montieren. So ist es beispielsweise beim Anbau von elektrischen Sitzverstellantrieben möglich, die beiden Seitenrahmen in einfachster Weise voneinander zu trennen. Besonders vorteilhaft ist es dabei, wenn die Seitenrahmen lösbar miteinander verschraubt sind.By using two side frames, the processing and assembly costs can be significantly reduced. The two frame parts of the side frames are, since they are designed essentially mirror-inverted, inexpensive to produce. Due to the detachable connection of the two side frames, it is possible to easily remove or assemble assemblies or elements that are located between the side frames in the chassis frame. So it is possible, for example, in the cultivation of electric Sitzverstellantrieben to separate the two side frames in the simplest way from each other. It is particularly advantageous if the side frames are releasably screwed together.

Ergänzend zu der spiegelbildlichen Ausgestaltung können lediglich einzelne Bauelemente, beispielsweise Bremshebel, Steckerlaschen oder Ähnliches, in asymmetrischer Anordnung vorgesehen sein.In addition to the mirror-image embodiment, only individual components, such as brake levers, connector tabs or the like, may be provided in an asymmetrical arrangement.

Dabei erweist es sich als besonders günstig, wenn der rechte und der linke Seitenrahmen mittels horizontaler, quer zur Fahrtrichtung angeordneter Steckrohre lösbar miteinander verbunden sind. Die beiden Steckrohre bzw. die entsprechenden zum Einstecken vorgesehenen Rohrenden der Seitenrahmen können dabei sowohl die Lagerung für den Sitzrahmen als auch für Antriebskomponenten der Hinterräder bilden. So kann beispielsweise das hintere Steckrohr zur Getriebelagerung einer Hinterradschwinge dienen, während das vordere Steckrohr einen Stützbereich des Sitzrahmens bilden kann.It proves to be particularly advantageous if the right and left side frames are detachably connected to each other by means of horizontal, transversely to the direction of travel arranged plug pipes. The two plug pipes or the corresponding For insertion provided pipe ends of the side frame can form both the storage for the seat frame and for drive components of the rear wheels. For example, the rear plug-in tube can serve for gearbox mounting of a rear swinging arm, while the front plugging tube can form a support region of the seat frame.

Besonders günstig ist es, wenn der Seitenrahmen ein Oberrohr und ein Unterrohr umfasst. Das Unterrohr kann dabei für die Lagerung von Antriebskomponenten, beispielsweise einer Batterie oder ähnlichem dienen, während das Oberrohr eine Hinterradschwinge des Hinterrades sowie den Sitzrahmen lagert.It is particularly favorable when the side frame comprises a top tube and a down tube. The down tube may serve for the storage of drive components, such as a battery or the like, while the top tube supports a rear swing arm of the rear wheel and the seat frame.

Die Hinterradschwinge ist dabei als Längslenker ausgebildet. Sie kann als Blechteil, Blechbiegeteil oder Blechstanzteil ausgebildet sein und trägt bevorzugter Weise an ihrem hinteren Ende eine Antikipprolle. Weiterhin ist es möglich, zwischen der Hinterradschwinge und dem jeweiligen Seitenrahmen ein Federungs- und/oder Dämpfungselement zwischenzuschalten.The rear swing arm is designed as a trailing arm. It may be formed as a sheet metal part, sheet metal bent part or sheet metal stamped part and preferably carries at its rear end a Antikipprolle. Furthermore, it is possible to interpose a suspension and / or damping element between the rear swing arm and the respective side frame.

Bei der erfindungsgemäßen Ausgestaltung des Elektro-Rollstuhls ist es somit möglich, an der Hinterradschwinge sowohl das jeweilige Hinterrad, als auch dessen Antriebskomponenten (Motor und/oder Getriebe) zu montieren. Die Hinterradschwinge weist bevorzugt ein Lagerrohr mit beispielsweise Kunststoffgleitlagern auf, welches auf das bereits erwähnte Getriebelagerrohr (hinteres Steckrohr) aufgeschoben werden kann. Zur seitlichen Fixierung kann ein Begrenzungsrohr dienen. Als bevorzugt erweist es sich hierbei, dass erfindungsgemäß die Montage der Hinterradschwinge in einfachster Weise an dem jeweiligen Seitenrahmen erfolgen kann. Durch die Zuordnung der beiden Seitenrahmen zueinander ergibt sich dann auch eine entsprechende Zuordnung und Fixierung der beiden Hinterradschwingen. Im bevorzugten Falle kann die gesamte Montage der Hinterradschwinge mit nur einer einzigen Schraubverbindung erfolgen, während sämtliche anderen Komponenten als Steckverbindungen ausgebildet sind.In the inventive design of the electric wheelchair, it is thus possible to mount on the rear swing arm both the respective rear wheel, as well as its drive components (engine and / or transmission). The rear swing arm preferably has a bearing tube with, for example, plastic plain bearings, which can be pushed onto the already mentioned Getriebelagerrohr (rear plug-in tube). For lateral fixation can serve a limiting tube. It proves to be preferable in this case that according to the invention, the assembly of the rear swing arm can be done in the simplest way to the respective side frame. By assigning the two side frames to each other then also results in a corresponding assignment and fixation of the two rear swingarms. In the preferred case, the entire Assembly of the rear swing arm done with only a single screw, while all other components are designed as plug-in connections.

Erfindungsgemäß ist es weiterhin möglich, an der Hinterradschwinge auch den zur Übertragung der Antriebsenergie erforderlichen Motorstecker vorzusehen.According to the invention, it is also possible to provide on the rear swing arm also required for the transmission of the drive power motor connector.

Besonders günstig ist es, wenn erfindungsgemäß auf dem Fahrwerksrahmen ein den Sitz tragender Sitzrahmen gelagert ist, der um eine horizontale Achse kippbar ist. Es ist somit möglich, die Neigung der Sitzfläche in sehr einfacher Weise einzustellen.It is particularly advantageous if, according to the invention, a seat frame supporting the seat is mounted on the chassis frame, which can be tilted about a horizontal axis. It is thus possible to adjust the inclination of the seat in a very simple manner.

Der Sitzrahmen ist an dem erfindungsgemäßen Elektro-Rollstuhl bevorzugter Weise so gelagert, dass ein rückwärtiger Lagerbereich an dem jeweiligen Seitenrahmen ausgebildet ist, während der vordere Bereich des Sitzrahmens über den bereits erwähnten Stützbereich abgestützt ist. Dieser Stützbereich kann bevorzugter Weise in Form eines verstellbaren Teleskoprohres ausgebildet sein, sodass es auf einfachste Weise möglich ist, die Neigung der Sitzfläche den Bedürfnissen des Rollstuhlbenutzers anzupassen.The seat frame is preferably mounted on the electric wheelchair according to the invention so that a rear bearing portion is formed on the respective side frame, while the front portion of the seat frame is supported on the above-mentioned support area. This support region can preferably be designed in the form of an adjustable telescopic tube, so that it is possible in the simplest way to adapt the inclination of the seat to the needs of the wheelchair user.

Auch der Sitzrahmen besteht bei dem erfindungsgemäßen Elektro-Rollstuhl bevorzugter Weise aus einer rechten bzw. einer linken Sitzrahmenhälfte. Auch die beiden Sitzrahmenhälften sind erfindungsgemäß bevorzugter Weise im Wesentlichen spiegelbildlich ausgebildet, sodass sich der Herstellungsaufwand beträchtlich vermindert. Die beiden Sitzrahmenhälften können, zumindest in ihrem vorderen Bereich, mittels eines Einsteckrohres miteinander verschraubt werden. Das Einsteckrohr kann dazu dienen, den Stützbereich (Teleskoprohr) für die Sitzverstellung aufzunehmen (Sitzkantelung). Der gesamte Sitzrahmen ist somit auf dem Fahrwerksrahmen oder Hauptrahmen kippbar oder verstellbar gelagert, wobei die hinteren Lagerbereiche für den Sitzrahmen, die an den jeweiligen Seitenrahmen vorgesehen sind, zugleich zur hinteren Sitzarretierung dienen.Also, the seat frame is in the electric wheelchair according to the invention preferably from a right or a left seat frame half. Also, the two seat frame halves according to the invention preferably substantially mirror-inverted, so that the production cost considerably reduced. The two seat frame halves can, at least in their front area, be screwed together by means of a Einsteckrohres. The insert tube can serve to accommodate the support area (telescopic tube) for seat adjustment (seat tilt). The whole Seat frame is thus tiltable or adjustable mounted on the chassis frame or main frame, the rear storage areas for the seat frame, which are provided on the respective side frame, at the same time serve for rear seat lock.

In einer weiteren, bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Seitenrahmen jeweils einen vorderen und einen hinteren Anschlussbereich aufweisen, an welchem Rückhaltegurte für den Transport in einem Behinderten-Transportfahrzeug befestigt werden können. Diese Anschlussbereiche sind beispielsweise durch freie Rohrenden oder durch entsprechend gebogene Bereiche realisiert, sodass keine weiteren Zusatzteile benötigt werden.In a further, preferred embodiment of the invention it is provided that the side frames each have a front and a rear connection region, on which restraining straps can be fastened for transport in a disabled transport vehicle. These connection areas are realized, for example, by free pipe ends or by correspondingly curved areas, so that no further additional parts are required.

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

Fig. 1
eine vereinfachte Seitenansicht eines Ausführungsbeispiels des erfindungsgemäßen Rollstuhls,
Fig. 2
eine Ansicht analog Fig. 1, mit gekipptem (gekanteltem) Sitz,
Fig. 3
eine Seitenansicht eines erfindungsgemäß ausgebildeten linken Seitenrahmens,
Fig. 4
eine Draufsicht auf den in Fig. 3 dargestellten Seitenrahmen,
Fig. 5
eine stirnseitige Ansicht des in den Fig. 3 und 4 gezeigten Seitenrahmens,
Fig. 6
eine Draufsicht auf den erfindungsgemäßen Fahrwerksrahmen, und
Fig. 7
eine Draufsicht auf den erfindungsgemäßen Sitzrahmen.
In the following the invention will be described by means of an embodiment in conjunction with the drawings. Showing:
Fig. 1
a simplified side view of an embodiment of the wheelchair according to the invention,
Fig. 2
a view similar to FIG. 1, with tilted (tilted) seat,
Fig. 3
a side view of an inventively designed left side frame,
Fig. 4
a top view of the side frame shown in Fig. 3,
Fig. 5
an end view of the side frame shown in FIGS. 3 and 4,
Fig. 6
a plan view of the chassis frame according to the invention, and
Fig. 7
a plan view of the seat frame according to the invention.

Bei den zeichnerischen Darstellungen handelt es sich um CAD-Zeichnungen. Infolgedessen sind verdeckte Linien, Durchdringungen oder Ähnliches, nicht gestrichelt. Auch fehlen ggf. Schraffuren von geschnittenen Teilen.The graphic representations are CAD drawings. As a result, hidden lines, penetrations or the like are not dashed. Also missing, if necessary, hatching of cut parts.

Wie sich aus den Fig. 1 und 2 ergibt, umfasst der erfindungsgemäße Elektro-Rollstuhl jeweils zwei Vorderräder 1, welche jeweils um eine vertikale Achse drehbar mittels einer Gabel 22 gelagert sind, so wie dies aus dem Stand der Technik bekannt ist.As is apparent from Figs. 1 and 2, the electric wheelchair according to the invention comprises two front wheels 1, which are each mounted rotatably about a vertical axis by means of a fork 22, as is known from the prior art.

Der Rollstuhl umfasst weiterhin zwei nicht-lenkbare Hinterräder 2, welche jeweils an einer Hinterradschwinge 15 gelagert sind. Die Hinterradschwinge 15 ist um eine Lagerung 14 des jeweiligen Seitenrahmens 4 bzw. 5 schwenkbar gelagert. Sie ist plattenförmig aufgebaut und dient zur Lagerung einer Antriebseinheit 19, welche einen Motor sowie ein Getriebe umfassen kann.The wheelchair further comprises two non-steerable rear wheels 2, which are each mounted on a rear swingarm 15. The rear swing arm 15 is pivotally mounted about a bearing 14 of the respective side frame 4 and 5 respectively. It is constructed plate-shaped and serves to support a drive unit 19, which may include an engine and a transmission.

An einem Lagerpunkt 23 ist an der Schwinge ein Federungs- und/oder Dämpfungselement 17 angeordnet, dessen oberer Endbereich gelenkig mit einem Lagerbock 24 verbunden ist, welcher wiederum an einem Oberrohr 12 des jeweiligen Seitenrahmens 4 bzw. 5 befestigt ist.At a bearing point 23, a suspension and / or damping element 17 is arranged on the rocker whose upper end portion is pivotally connected to a bearing block 24, which in turn is fixed to a top tube 12 of the respective side frame 4 and 5 respectively.

Die beiden Seitenrahmen 4 und 5 bilden einen gemeinsamen Fahrwerksrahmen, der in der Draufsicht in Fig. 6 dargestellt ist. Hierzu umfassen die beiden Seitenrahmen 4, 5 jeweils ein Oberrohr 12 und ein Unterrohr 13 (siehe auch Fig. 3 bis 5). Im vorderen Bereich sind das Oberrohr 12 und das Unterrohr 13 direkt miteinander verbunden, während sie im Bereich der Lagerung der Hinterradschwinge (Lagerung 14) entsprechend abgestrebt sind. Am hinteren Ende ist das Oberrohr 12 um 90° gebogen, sodass sich ein hinterer Anschlussbereich 21 ergibt, auf welchen eine Schlaufe eines Rückhaltegurtes aufschiebbar ist. In entsprechender Weise kann der gebogene vordere Bereich des jeweiligen Oberrohrs 12 einen vorderen Anschlussbereich 20 bilden, an den ein vorderer Rückhaltegurt anhängbar ist. Die beiden Rückhaltegurte dienen dazu, den Elektro-Rollstuhl beim Transport, beispielsweise in einem Fahrzeug, zu sichern.The two side frames 4 and 5 form a common chassis frame, which is shown in the plan view in Fig. 6. For this purpose, the two side frames 4, 5 each comprise a top tube 12 and a down tube 13 (see also FIGS. 3 to 5). In the front area, the top tube 12 and the down tube 13 are directly connected to each other while in the area the storage of the rear swing arm (storage 14) strived accordingly. At the rear end of the top tube 12 is bent by 90 °, so that there is a rear connection portion 21, on which a loop of a restraint belt can be pushed. In a corresponding manner, the curved front region of the respective top tube 12 can form a front connection region 20, to which a front restraint belt can be attached. The two restraining straps serve to secure the electric wheelchair during transport, for example in a vehicle.

Wie sich beispielsweise aus einem Vergleich der Fig. 4 und 6 ergibt, sind die beiden Seitenrahmen 4 und 5 jeweils ineinander steckbar. Dies erfolgt durch ein (in der Fig. 6 nicht direkt sichtbares) innen liegendes vorderes Steckrohr 8 sowie ein hinteres Steckrohr 9, welches im Bereich der Lagerung 14 die Abstützung oder Strebe des Seitenrahmens durchdringt (siehe Fig. 5 und 6).As can be seen for example from a comparison of FIGS. 4 and 6, the two side frames 4 and 5 are plugged into each other. This is done by a (not directly visible in FIG. 6) inner front plug-in tube 8 and a rear plug-in tube 9, which penetrates the support or strut of the side frame in the region of the bearing 14 (see FIGS. 5 and 6).

Durch den Aufbau des Fahrwerksrahmens, welcher aus den beiden Seitenrahmen 4, 5 zusammengesetzt ist, ist es möglich, die Breite des Fahrwerksrahmens zu variieren, indem entsprechende Distanzelemente oder Distanzstücke bzw. Zwischenelemente zwischen die beiden Seitenrahmen 4, 5 montiert werden. Dies ist in einfachster Weise durch entsprechende Verlängerung der Steckrohre 8, 9 und durch Aufschieben von Distanzhülsen möglich.Due to the structure of the chassis frame, which is composed of the two side frames 4, 5, it is possible to vary the width of the chassis frame by corresponding spacer elements or spacers or intermediate elements between the two side frames 4, 5 are mounted. This is possible in the simplest way by appropriate extension of the plug pipes 8, 9 and by pushing spacers.

Wie die Fig. 6 zeigt, wird beim Zusammenbau der beiden Seitenrahmen zwischen den vorderen Anschlussbereichen 20 beim Einschieben des (in Fig. 6 nicht sichtbaren) vorderen Steckrohrs 8 eine Hülse 25 aufgeschoben bzw. zwischengelegt, an welcher ein teleskopischer Stützbereich 11 für einen Sitzrahmen 7 befestigt ist. Das Teleskoprohr des Stützbereichs 11 ist mittels eines Hebels 26 einstellbar, um den Sitzrahmen 7 um eine horizontale Achse 6, welche an einem hinteren Lagerbereich 10 des Oberrohrs 12 ausgebildet ist, zu verschwenken. Ein Vergleich der Fig. 1 und 2 zeigt den unterschiedlichen Schwenk- oder Kantel-Zustand.As shown in FIG. 6, during the assembly of the two side frames between the front connection regions 20 during insertion of the front plug-in tube 8 (not visible in FIG. 6), a sleeve 25 is slid or interposed, on which a telescopic support region 11 for a seat frame 7 is attached. The telescopic tube of the support area 11 is adjustable by means of a lever 26 to pivot the seat frame 7 about a horizontal axis 6 which is formed on a rear bearing portion 10 of the top tube 12. A comparison of Figs. 1 and 2 shows the different pivot or Kantel state.

Erfindungsgemäß kann der Stützbereich 11 auch elektrisch verstellbar sein, beispielsweise mittels eines Getriebes oder eines Linearantriebs.According to the invention, the support region 11 can also be electrically adjustable, for example by means of a transmission or a linear drive.

Der Sitzrahmen 7 ist, wie sich aus der Draufsicht der Fig. 7 ergibt, aus zwei Sitzrahmenhälften 16 zusammengesetzt, welche ebenfalls gesteckt und verschraubt werden können. Somit kann auch der Sitzrahmen 7, der einen im Einzelnen nicht dargestellten Sitz 3 trägt, in einfacher Weise zusammengebaut bzw. demontiert werden. Im Übrigen entspricht der Sitz 3 mit seinem Sitzpolster, seinen Armlehnen, seinen Seitenteilen sowie seiner Rückenlehne im Wesentlichen den aus dem Stand der Technik bekannten Anordnungen, sodass auf weitere detaillierte Beschreibungen an dieser Stelle verzichtet werden kann.The seat frame 7 is, as can be seen from the plan view of Fig. 7, composed of two seat frame halves 16, which can also be plugged and screwed. Thus, the seat frame 7, which carries a seat 3, not shown in detail, can be easily assembled or disassembled. Incidentally, the seat 3 with its seat cushion, its armrests, its side parts and its backrest essentially corresponds to the arrangements known from the prior art, so that further detailed descriptions can be dispensed with at this point.

Der Sitzrahmen 7 ist, da er aus den beiden Sitzrahmenhälften 16 zusammengebaut ist, in seiner Breite sehr einfach variabel. Hierfür ist es lediglich erforderlich, entsprechende Zwischenelemente oder Distanzstücke einzufügen, um - ausgehend von einem relativ schmalen Sitzrahmen 7 - jeweils stufenweise größere Breiten zu realisieren.The seat frame 7, since it is assembled from the two seat frame halves 16, is very easily variable in width. For this purpose, it is only necessary to insert corresponding intermediate elements or spacers to - starting from a relatively narrow seat frame 7 - each realize gradually larger widths.

Der vordere Bereich des Sitzrahmens 7 trägt weiterhin Beinstützen 27 mit Trittplatten 28. Diese sind in üblicher Weise eingehängt, längenverstellbar und/oder seitlich verschwenkbar. Auch hierzu wird auf die aus dem Stand der Technik bekannten Konstruktionen verwiesen.The front portion of the seat frame 7 also carries leg supports 27 with treads 28. These are mounted in a conventional manner, adjustable in length and / or laterally pivotable. Again, reference is made to the known from the prior art constructions.

Wie eine Zusammenschau der Fig. 4 und 6 zeigt, weist jeder der Seitenrahmen 4 und 5 jeweils ein Steckrohr 29 auf, in welches das hintere Steckrohr 9 einsteckbar ist. Die Figurenkonstruktion wird durch ein oberes Bogenrohr 31 sowie eine Strebe 32 entsprechend abgestützt, sodass sich die Lagerung 14 für die Hinterradschwinge 15 ergibt, welche an ihrem Endbereich eine Antikipprolle 18 trägt. Der gesamte Aufbau des Fahrwerkrahmens ist somit sehr stabil und robust und ist mittels weniger Schraubverbindungen, welche das vordere und das hintere Steckrohr 8 und 9 verbinden, lösbar. Somit lassen sich einzelne Komponenten, beispielsweise eine nicht dargestellte Batterie, welche auf den Unterrohren 13 steht, leicht aus- und einbauen. Der Elektro-Rollstuhl kann auch in sehr einfacher Weise an zusätzliche Anforderungen angepasst werden, es können zusätzliche Komponenten, Steuerungseinheiten oder Ähnliches, eingebaut oder demontiert werden.As a synopsis of Figs. 4 and 6 shows, each of the side frames 4 and 5 each have a plug-in tube 29, in which the rear plug-in tube 9 can be inserted. The figure structure is supported by an upper arc tube 31 and a strut 32 accordingly, so that the bearing 14 for the rear swing arm 15 results, which carries an anti-tipper wheel 18 at its end. The entire structure of the chassis frame is thus very stable and robust and is by means of fewer screw that connect the front and the rear tube 8 and 9, solvable. Thus, individual components, such as a battery, not shown, which is on the lower tubes 13, easy to remove and install. The electric wheelchair can also be adapted in a very simple manner to additional requirements, it can be additional components, control units or the like, installed or removed.

Wie ebenfalls aus den Figuren ersichtlich ist, weist jeder Seitenrahmen 4, 5 an seinem vorderen Endbereich ein Lagerrohr 30 auf, an welchem die bereits beschriebene Gabel 22 des Vorderrads 1 gelagert ist.As can also be seen from the figures, each side frame 4, 5 has at its front end region a bearing tube 30 on which the already described fork 22 of the front wheel 1 is mounted.

Die Erfindung ist nicht auf das gezeigte Ausführungsbeispiel beschränkt.The invention is not limited to the embodiment shown.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorderradfront
22
Hinterradrear wheel
33
SitzSeat
44
rechter Seitenrahmenright side frame
55
linker Seitenrahmenleft side frame
66
horizontale Achsehorizontal axis
77
Sitzrahmenseat frame
88th
vorderes Steckrohrfront plug-in tube
99
hinteres Steckrohrrear plug pipe
1010
Lagerbereichstorage area
1111
Stützbereichsupport area
1212
Oberrohrtop tube
1313
Unterrohrdown tube
1414
Lagerungstorage
1515
Hinterradschwingeswingarm
1616
SitzrahmenhälfteSeat frame half
1717
Federungs- und/oder DämpfungselementSuspension and / or damping element
1818
AntikipprolleAntikipprolle
1919
Antriebseinheitdrive unit
2020
vorderer Anschlussbereichfront connection area
2121
hinterer Anschlussbereichrear connection area
2222
Gabelfork
2323
Lagerpunktbearing point
2424
Lagerbockbearing block
2525
Hülseshell
2626
Hebellever
2727
Beinstützeleg support
2828
Trittplattefootboard
2929
Steckrohrplug pipe
3030
Lagerrohrbearing tube
3131
BogenrohrElbow pipe
3232
Strebestrut
3333
RückhaltegurtPostural

Claims (8)

  1. Electrically driven wheelchair having a chassis frame carrying front wheels (1) and rear wheels (2) and a seat (3) mounted on the chassis frame, the chassis frame comprising a right-hand side frame (4) and a left-hand side frame (5), which are connected to each other by means of horizontal push-in tubes (8, 9) arranged transversely with respect to the direction of travel, are joined detachably to each other and are constructed substantially in mirror-image fashion in relation to each other, and its being possible for the width of the chassis frame formed from the side frames (4, 5) to be varied by means of intermediate elements,
    characterized
    in that a seat frame (7) carrying the seat (3) is mounted on the chassis frame such that it can be tilted about a horizontal axis (6),
    in that the side frames (4, 5) each comprise a mounting region (10) and the connection between the side frames (4, 5) comprises a supporting region (11) for the seat frame (7), and in that, in relation to the direction of travel, the mounting region (10) is arranged in the central region of the side frame (4, 5),
    in that the seat frame (7) is constructed from a right-hand and a left-hand seat frame half (16), which are configured in substantially mirror-image fashion in relation to each other, in that it is possible for the width of the seat frame (7) formed by the seat frame halves (16) to be varied by interconnecting intermediate elements, and
    in that the side frame (4, 5) comprises a mounting (14) for a rear wheel swinging arm (15) carrying a rear wheel (2), a springing and/or damping element (17) being arranged between the side frame (4, 5) and the rear wheel swinging arm (15), and the rear wheel swinging arm comprising plug-in electric connecting means for a drive unit (19) mounted on the rear wheel swinging arm (15).
  2. Electrically driven wheelchair according to Claim 1, characterized in that the supporting region (11) for the adjustment of the seat frame (7) comprises at least one adjustable telescopic tube.
  3. Electrically driven wheelchair according to Claim 1 or 2, characterized in that the supporting region (11) for the adjustment of the seat frame (7) can be actuated manually.
  4. Electrically driven wheelchair according to Claim 1 or 2, characterized in that the supporting region (11) for the adjustment of the seat frame (7) can be adjusted electrically.
  5. Electrically driven wheelchair according to Claim 4, characterized in that the supporting region (11) for the adjustment of the seat frame (7) can be adjusted electrically by means of a gear mechanism, a linear drive or the like.
  6. Electrically driven wheelchair according to one of Claims 1 to 5, characterized in that the side frame (4, 5) comprises an upper tube (12) and a lower tube (13).
  7. Electrically driven wheelchair according to one of Claims 1 to 6, characterized in that an anti-tipping roller (18) is mounted in the rear end region of the rear wheel swinging arm (15).
  8. Electrically driven wheelchair according to one of Claims 1 to 7, characterized in that the side frame (4, 5) is provided with a front (20) and a rear (21) connecting region for a transport restraining strap.
EP03028737A 2003-01-13 2003-12-12 Electrically driven wheelchair Expired - Lifetime EP1437113B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10300946A DE10300946B3 (en) 2003-01-13 2003-01-13 Power Wheelchair
DE10300946 2003-01-13

Publications (2)

Publication Number Publication Date
EP1437113A1 EP1437113A1 (en) 2004-07-14
EP1437113B1 true EP1437113B1 (en) 2007-09-12

Family

ID=32478222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03028737A Expired - Lifetime EP1437113B1 (en) 2003-01-13 2003-12-12 Electrically driven wheelchair

Country Status (5)

Country Link
EP (1) EP1437113B1 (en)
AT (1) ATE372758T1 (en)
DE (2) DE10300946B3 (en)
DK (1) DK1437113T3 (en)
NO (1) NO325755B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2005100261B4 (en) * 2005-03-27 2005-08-18 Zhang, Dongning Mr Mobility solution
EP1917946A3 (en) * 2006-11-06 2009-03-18 Sunrise Medical GmbH & Co. KG Personal mobility vehicle with two stage tilt ability and method for rearward tilting a seat
EP2025316B1 (en) * 2007-08-14 2010-11-03 Roger Hochstrasser Seat
CN103202748A (en) * 2013-04-15 2013-07-17 常熟市平方轮椅有限公司 Anti-back-tilting electric wheelchair
CN107744434A (en) * 2016-02-18 2018-03-02 夏放军 A kind of wheelchair

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896891A (en) * 1973-08-31 1975-07-29 Stainless Medical Products Inc Modular motorized wheel chair
US5156226A (en) * 1988-10-05 1992-10-20 Everest & Jennings, Inc. Modular power drive wheelchair
DK204590D0 (en) * 1990-08-27 1990-08-27 Knud Raun WHEELCHAIR WITH DRIVER SEAT, AND DRIVER SEAT FOR WHEELCHAIR
ES2118125T3 (en) * 1990-11-14 1998-09-16 Invacare Corp TRANSFORMABLE PIVOTING WHEELCHAIR BETWEEN AN ASSISTED MODE AND A SELF-PROPELLED MODE.
US5575348A (en) * 1994-04-15 1996-11-19 Invacare Corporation Powered wheelchair with adjustable center of gravity and independent suspension
DE4420877C2 (en) * 1994-06-15 2001-09-20 Invacare Deutschland Gmbh wheelchair
US5564786A (en) * 1994-11-10 1996-10-15 Labac Systems, Inc. Modular adjustable seat frame for wheelchairs
US6095271A (en) * 1997-10-06 2000-08-01 Sunrise Medical Hhg Inc. Battery mounting system for a powered wheelchair

Also Published As

Publication number Publication date
EP1437113A1 (en) 2004-07-14
ATE372758T1 (en) 2007-09-15
NO325755B1 (en) 2008-07-14
DK1437113T3 (en) 2008-01-07
NO20040129L (en) 2004-07-14
DE50308166D1 (en) 2007-10-25
DE10300946B3 (en) 2004-08-26

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