EP1279391B1 - Wheelchair - Google Patents
WheelchairInfo
- Publication number
- EP1279391B1 EP1279391B1 EP02015399A EP02015399A EP1279391B1 EP 1279391 B1 EP1279391 B1 EP 1279391B1 EP 02015399 A EP02015399 A EP 02015399A EP 02015399 A EP02015399 A EP 02015399A EP 1279391 B1 EP1279391 B1 EP 1279391B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel chair
- chair according
- wheels
- main body
- seat
- 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
Links
Images
Classifications
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- 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
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0875—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable dismountable, e.g. where the wheelchair can be disassembled for transportation or storage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0883—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having locking means for maintaining a folded or unfolded condition
-
- 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
- A61G5/1083—Quickly-removable wheels
-
- 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
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
- A61G2203/14—Joysticks
Definitions
- the invention relates to a wheelchair whose chassis has a self-supporting body.
- Wheelchairs including those which are driven by a motor, usually have a frame in which a seat is integrated and to which two drivable wheels and two freely pivotable or possibly motor-steered wheels are directly articulated.
- the drivable wheels can be manually driven via handrims or motor.
- a folding mechanism that allows folding of the wheelchair frame.
- Such a wheelchair is known, for example, from EP 0 790 049 A2.
- Wheelchairs of the type described above are particularly suitable for so-called outdoor operation, i. an operation outside closed rooms and especially on uneven roads, such as field or forest trails, rather unsuitable.
- the described frame construction has only a relatively low stability.
- the direct articulation of the wheels on a tubular frame only allows insufficient for uneven roads suspension, which is usually provided exclusively by appropriate pneumatic tires.
- a wheelchair is known, the frame of which comprises a plurality of links, namely a leg-laying section, a central section for conventionally securing a seat above the frame and a battery compartment below the frame.
- the articulation of the wheels of the wheelchair leading handlebar takes place on different elements of the frame.
- the technical problem underlying the invention is to provide a wheelchair which has a suitable for outdoor operation stability and suitable for outdoor operation drivability and at the same time allows a dismantling that allows transport in conventional passenger cars.
- the wheelchair according to the invention has a self-supporting body, are hinged to the handlebars for attachment of the wheels and on which a seat device can be fastened.
- the self-supporting base body assumes the supporting function of the chassis in the small vehicle according to the invention.
- the body has sufficient rigidity to take over this supporting function.
- the basic body is monolithic. This means that the base body has a block-like structure, which provides sufficient strength, is relatively lightweight and has appropriate attachment points for articulation of the links and for receiving the seat assembly.
- the main body is made of an extruded profile, wherein aluminum or aluminum alloys are possible as materials.
- the main body can also be made of a suitable plastic.
- the drive wheels preferably have a hub motor. This eliminates the need for a drive train from the chassis to the drive wheels. The torque is generated in the hub motor itself and the fixed part of the hub motor only needs to be supported by a suitable device on the corresponding link to ensure propulsion.
- the batteries necessary for the power supply can be fastened to the base body, preferably also by means of corresponding quick-release devices, which allow a quick change of the accumulators.
- Connection points for accumulators may be provided on opposite sides of the main body. It can also be provided several terminals for optional operation with one or more accumulators, which when operating with an accumulator this centered to the vehicle axle can be fastened and when operating with multiple accumulators they are symmetrically fastened to the vehicle axle.
- the seat device of the wheelchair according to the invention preferably has a seat, a seat back and a footrest and two armrests and forms a complete unit.
- This unit can, preferably also by means of quick-release device, attached to the body and be solved by this.
- the seat device can be designed to be collapsible. Due to the modular design of the wheelchair, the seat can be made particularly ergonomic, so that seat shells for the severely disabled can be used.
- the seat device can be rotatably arranged, so that at a Turning the seat 180 degrees from a rear wheel drive vehicle becomes a front wheel drive vehicle.
- the links for receiving the freely pivotable wheels are preferably designed as spring-mounted double link. In this way it can be ensured that the wake of the freely pivotable wheels remains substantially constant over the entire travel, in particular when the freely pivotable wheels are articulated by means of a vertically extending to the ground thru axle on the handlebars. With limited travel, the front handlebars can also be designed as a single link.
- the measures provided for receiving the drive wheels handlebar are preferably designed as trailing arms, which are supported by a spring / damper unit on the body.
- a wheelchair of the type described above has excellent stability and allows resilient reception of the wheels, which allows operation even on uneven roads. At the same time allows the construction of this wheelchair disassembly into individual modules, which allows transport of the wheelchair in the trunk of a standard car.
- this assembly is a sheet-like device that can be easily transported is.
- the individual wheels and the accumulators can also be easily stowed and the seat device can be brought by a corresponding folding mechanism also in a space-saving flat shape.
- a control panel may be provided on an armrest of the seat assembly. It is also possible to provide a wireless signal transmission from the control panel to the drive wheels, wherein in the case of using hub motors each hub motor may have a separate control unit. In this case eliminates the need for lines for control signals. With the use of accumulators, which are attached to the body, then only a power transmission to the hub motors must be provided.
- the accumulators are also housed in the hubs of the drive wheels and a wireless signal transmission of the control commands is provided, eliminating the need for electrical lines between the chassis and wheels completely.
- Fig. 1 shows as an embodiment of the invention, a wheelchair in perspective in a so-called exploded view, i. an exploded view.
- a base body 10 is provided in the form of an extruded profile 11 made of an aluminum alloy.
- the extruded profile 11 is closed at its two longitudinal ends by means of correspondingly screwed end plates 12.
- stiffening elements (not shown) or other assemblies, such as switching devices, etc. (not shown).
- a receiving device 14 is provided, which serves by means of a quick release device, not shown, the easily detachable attachment of a seat device 50.
- the seat device 50 has frame profiles which, together with a covering or upholstery, not shown, a seat surface 51, a seat back 52, a footrest 53 and a strut 54 for attachment of a control panel 60 result. It is understood that armrests (not shown) can be provided on both sides.
- the seat assembly is possible, for example, a seat and a backrest, optionally with corresponding side parts, as a self-supporting structure with corresponding connection elements to the main body or a corresponding seat frame.
- the seat assembly is provided with a folding mechanism that allows it to be detached from the body 10 Seat assembly 50 to be folded so that it gives an easily transportable, substantially sheet-like element.
- the rear links 30 are designed as trailing arms, which are supported on the base body 10 via a spring / damper arrangement 31.
- the front link 20 are designed as double link, which are coupled to one another via a arranged in the interior of the body 10, not shown, spring / damper mechanism.
- Two drive wheels 35 are hinged by means of horizontally extending stub axles 36 and not shown quick release devices on the rear arms 30.
- Two freely pivotable front wheels 25 are articulated by means of vertically arranged thru axles 26 and also not shown quick release devices on the front arms 20.
- the position of the axis of rotation 27 of the front wheel 25 is offset from the position of the through axle 26 in the installed state, so that there is a caster that aligns the front wheels 25 when driving straight ahead always in the direction of travel.
- the control of the wheelchair is carried out by a separate control of the two driven rear wheels 35, wherein the drive is preferably via not shown hub motors, which are designed as electric motors, and wherein the steering commands are input via the control panel 60.
- the designed as a double link front link 20 is designed so that over the entire available travel of the wake of the front wheel 25 remains substantially constant.
- One or more accumulators 70 can by means of quick-release devices on the base body 10th be hung.
- the quick-connect devices for attaching the accumulators 70 have interfaces for electrical lines which provide an electrical connection of the accumulators 70 with the hub motors.
- a protective device in the form of a protective strap 80 may be fastened to the base body 10, preferably detachably.
- each have a climbing aid 28 is provided at the front wheels 25 .
- the climbing aid 28 is designed in pairs per front wheel 25 and spring loaded on both sides of each front wheel 25 is mounted so that it assumes the position shown in Fig. 6 in the normal operating condition.
- the climbing aid 28 can be pivoted about its pivot axis 29 via a certain path in the direction of rotation of the wheel indicated by the arrow A in FIGS. 6 and 7.
- FIGS. 6 and 7 only the front wheel 25 is shown to explain the function of the climbing aid 28 for the sake of simplicity.
- the climbing aid 28 is initially in the predetermined by the spring force uppermost pivoting position.
- the climbing aid 28 pivots in the direction of rotation of the front wheel 25 as a result of the driving force provided by the driving wheels.
- the front wheel 25 is thereby raised until it comes into contact with the curb in a suitable position in that, with further forward movement, it can overcome the step given by curbside 90.
- the direct articulation of the climbing aids 28 on the freely pivotable front wheels 25 ensures that the climbing aids 28 are always in an appropriate orientation to an obstacle, especially when it is moved obliquely to a curb or another stage. It However, it is understood that a linkage of the climbing aids is also possible directly on the body.
- the seat device 50, the accumulators 70, the rear wheels 35 and the front wheels 25 can be removed by means of simple quick-release fasteners, wherein the seat device 50 can be correspondingly folded or folded after removal.
- the dismantling also ensures that the individual components have a relatively low weight, so that the components can be easily stowed.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Handcart (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Prostheses (AREA)
- Developing Agents For Electrophotography (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
Description
Die Erfindung betrifft einen Rollstuhl, dessen Fahrgestell einen selbsttragenden Grundkörper aufweist.The invention relates to a wheelchair whose chassis has a self-supporting body.
Rollstühle, auch solche, die motorisch antreibbar sind, weisen üblicherweise ein Rahmengestell auf, in das ein Sitz integriert ist und an dem zwei antreibbare Räder sowie zwei frei verschwenkbare oder gegebenenfalls motorisch gelenkte Räder direkt angelenkt sind. Die antreibbaren Räder können manuell über Greifringe oder motorisch antreibbar sein. Um die Aussenabmessungen für einen Transport des Rollstuhls reduzieren zu können, sind derartige Rollstühle oftmals mit einem Klappmechanismus versehen, der ein Zusammenfalten des Rollstuhlgestells ermöglicht. Ein derartiger Rollstuhl ist beispielsweise aus der EP 0 790 049 A2 bekannt.Wheelchairs, including those which are driven by a motor, usually have a frame in which a seat is integrated and to which two drivable wheels and two freely pivotable or possibly motor-steered wheels are directly articulated. The drivable wheels can be manually driven via handrims or motor. In order to reduce the external dimensions for transporting the wheelchair, such wheelchairs are often provided with a folding mechanism that allows folding of the wheelchair frame. Such a wheelchair is known, for example, from EP 0 790 049 A2.
Rollstühle der vorstehend erläuterten Art sind insbesondere für einen sogenannten Outdoor-Betrieb, d.h. einen Betrieb ausserhalb geschlossener Räume und insbesondere auf unebenen Wegen, beispielsweise Feld- oder Waldwegen, eher ungeeignet. Die beschriebene Rahmenkonstruktion weist nur eine relativ geringe Stabilität auf. Zudem erlaubt die direkte Anlenkung der Räder an einen Rohrrahmen nur eine für unebene Wege unzureichende Federung, die üblicherweise ausschließlich durch entsprechende Luftreifen bereitgestellt wird.Wheelchairs of the type described above are particularly suitable for so-called outdoor operation, i. an operation outside closed rooms and especially on uneven roads, such as field or forest trails, rather unsuitable. The described frame construction has only a relatively low stability. In addition, the direct articulation of the wheels on a tubular frame only allows insufficient for uneven roads suspension, which is usually provided exclusively by appropriate pneumatic tires.
Es sind zudem auch Rollstühle mit akzeptablen Fahreigenschaften im Outdoor-Betrieb bekannt, die jedoch nicht für einen Transport mit zumutbarem Aufwand zerlegbar sind.There are also wheelchairs with acceptable driving characteristics in outdoor operation known, but not for transport with reasonable effort can be dismantled.
Aus der US-A-5 772 237 ist ein Rollstuhl bekannt, dessen Rahmen mehrere Glieder aufweist, nämlich einen Beinablegeabschnitt, einen Mittelabschnitt zum konventionellen Befestigen eines Sitzes oberhalb des Rahmens und ein Batteriefach unterhalb des Rahmens. Die Anlenkung der die Räder des Rollstuhls führenden Lenker erfolgt an unterschiedlichen Elementen des Rahmens.From US-A-5 772 237 a wheelchair is known, the frame of which comprises a plurality of links, namely a leg-laying section, a central section for conventionally securing a seat above the frame and a battery compartment below the frame. The articulation of the wheels of the wheelchair leading handlebar takes place on different elements of the frame.
Das der Erfindung zugrundeliegende technische Problem besteht darin, einem Rollstuhl bereit zu stellen, der eine auch für den Outdoor-Betrieb geeignete Stabilität sowie ein für den Outdoor-Betrieb geeignetes Fahrverhalten aufweist und gleichzeitig eine Zerlegbarkeit ermöglicht, die einen Transport in üblichen Personenkraftwagen ermöglicht.The technical problem underlying the invention is to provide a wheelchair which has a suitable for outdoor operation stability and suitable for outdoor operation drivability and at the same time allows a dismantling that allows transport in conventional passenger cars.
Die Aufgabe, dieses technische Problem zu lösen, wird durch einen Rollstuhl mit den Merkmalen des Patentanspruchs 1 gelöst.The task of solving this technical problem is solved by a wheelchair having the features of patent claim 1.
Der erfindungsgemäße Rollstuhl verfügt über einen selbsttragenden Grundkörper, an dem Lenker zur Befestigung der Räder angelenkt sind und auf dem eine Sitzeinrichtung befestigbar ist. Anders als bei dem eingangs erläuterten Stand der Technik, bei dem ein Rohrgestell einen Sitz integriert und bei dem die Räder direkt an dem Rohrgestell angelenkt sind, übernimmt bei dem erfindungsgemäßen Kleinfahrzeug der selbsttragende Grundkörper die tragende Funktion des Fahrgestells. Der Grundkörper verfügt über eine ausreichende Steifigkeit, um diese tragende Funktion übernehmen zu können.The wheelchair according to the invention has a self-supporting body, are hinged to the handlebars for attachment of the wheels and on which a seat device can be fastened. Unlike the initially described prior art, in which a tubular frame integrates a seat and in which the wheels are articulated directly on the tubular frame, the self-supporting base body assumes the supporting function of the chassis in the small vehicle according to the invention. The body has sufficient rigidity to take over this supporting function.
Der Grundkörper ist monolithisch ausgeführt. Dies bedeutet, dass der Grundkörper eine blockartige Struktur aufweist, die eine ausreichende Festigkeit bereitstellt, relativ leicht ist und über entsprechende Befestigungspunkte zur Anlenkung der Lenker sowie zur Aufnahme der Sitzeinrichtung hat. Der Grundkörper ist aus einem Strangpressprofil gefertigt, wobei als Werkstoffe Aluminium bzw. Aluminiumlegierungen möglich sind. Der Grundkörper kann auch aus einem geeigneten Kunststoff gefertigt sein.The basic body is monolithic. This means that the base body has a block-like structure, which provides sufficient strength, is relatively lightweight and has appropriate attachment points for articulation of the links and for receiving the seat assembly. The main body is made of an extruded profile, wherein aluminum or aluminum alloys are possible as materials. The main body can also be made of a suitable plastic.
An dem Grundkörper sind vier Lenker zur Befestigung der Räder federnd angelenkt. An den Lenkern können zwei frei schwenkbare Räder und zwei Antriebsräder, mittels Schnellverschlusseinrichtungen, lösbar befestigt werden. Die Antriebsräder weisen vorzugsweise einen Nabenmotor auf. Hierdurch entfällt die Notwendigkeit eines Antriebsstranges von dem Fahrgestell auf die Antriebsräder. Das Drehmoment wird im Nabenmotor selbst erzeugt und der feststehende Teil des Nabenmotors muss lediglich über eine geeignete Einrichtung an dem entsprechenden Lenker abgestützt werden, um einen Vortrieb sicherzustellen.On the main body four links for attaching the wheels are resiliently articulated. On the handlebars can be two free Swiveling wheels and two drive wheels, by means of quick-release devices, releasably secured. The drive wheels preferably have a hub motor. This eliminates the need for a drive train from the chassis to the drive wheels. The torque is generated in the hub motor itself and the fixed part of the hub motor only needs to be supported by a suitable device on the corresponding link to ensure propulsion.
Besonders geeignet zum Antrieb eines derartigen Rollstuhls sind entsprechende Elektromotoren. Die für die Stromversorgung notwendigen Akkumulatoren können an dem Grundkörper befestigbar sein, vorzugsweise ebenfalls durch entsprechende Schnellverschlusseinrichtungen, die ein schnelles Wechseln der Akkumulatoren erlauben. Anschlußstellen für Akkumulatoren können an gegenüberliegenden Seiten des Grundkörpers vorgesehen sein. Es können zudem mehrere Anschlußstellen für wahlweisen Betrieb mit einem oder mehreren Akkumulatoren vorgesehen sein, wobei bei Betrieb mit einem Akkumulator dieser mittig zur Fahrzeugachse befestigbar ist und bei Betrieb mit mehreren Akkumulatoren diese symmetrisch zur Fahrzeugachse befestigbar sind.Particularly suitable for driving such a wheelchair are corresponding electric motors. The batteries necessary for the power supply can be fastened to the base body, preferably also by means of corresponding quick-release devices, which allow a quick change of the accumulators. Connection points for accumulators may be provided on opposite sides of the main body. It can also be provided several terminals for optional operation with one or more accumulators, which when operating with an accumulator this centered to the vehicle axle can be fastened and when operating with multiple accumulators they are symmetrically fastened to the vehicle axle.
Die Sitzeinrichtung des erfindungsgemäßen Rollstuhls weist vorzugsweise eine Sitzfläche, eine Sitzrücklehne und eine Fußstütze sowie zwei Armstützen auf und bildet eine komplette Einheit. Diese Einheit kann, vorzugsweise ebenfalls mittels Schnellverschlusseinrichtung, an dem Grundkörper angebracht und von diesem gelöst werden. Die Sitzeinrichtung kann zusammenfaltbar ausgelegt sein. Durch den modularen Aufbau des Rollstuhls kann der Sitz besonders ergonomisch ausgeführt werden, so dass auch Sitzschalen für Schwerstbehinderte verwendet werden können. Zudem kann die Sitzeinrichtung drehbar angeordnet sein, so dass bei einer Drehung des Sitzes um 180° aus einem Fahrzeug mit Hinterradantrieb ein Fahrzeug mit Vorderradantrieb wird.The seat device of the wheelchair according to the invention preferably has a seat, a seat back and a footrest and two armrests and forms a complete unit. This unit can, preferably also by means of quick-release device, attached to the body and be solved by this. The seat device can be designed to be collapsible. Due to the modular design of the wheelchair, the seat can be made particularly ergonomic, so that seat shells for the severely disabled can be used. In addition, the seat device can be rotatably arranged, so that at a Turning the seat 180 degrees from a rear wheel drive vehicle becomes a front wheel drive vehicle.
Die Lenker zur Aufnahme der frei schwenkbaren Räder sind vorzugsweise als federnd gelagerte Doppellenker ausgebildet. Hierdurch kann sichergestellt werden, dass der Nachlauf der frei schwenkbaren Räder über den gesamten Federweg im wesentlichen konstant bleibt, insbesondere dann, wenn die frei schwenkbaren Räder mittels einer vertikal zum Untergrund verlaufenden Steckachse an den Lenkern angelenkt sind. Bei begrenztem Federweg können die vorderen Lenker auch als Einzellenker ausgeführt sein.The links for receiving the freely pivotable wheels are preferably designed as spring-mounted double link. In this way it can be ensured that the wake of the freely pivotable wheels remains substantially constant over the entire travel, in particular when the freely pivotable wheels are articulated by means of a vertically extending to the ground thru axle on the handlebars. With limited travel, the front handlebars can also be designed as a single link.
Die zur Aufnahme der Antriebsräder vorgesehenen Lenker sind vorzugsweise als Längslenker ausgebildet, die sich über eine Feder/Dämpfer-Einheit an dem Grundkörper abstützen.The measures provided for receiving the drive wheels handlebar are preferably designed as trailing arms, which are supported by a spring / damper unit on the body.
Ein Rollstuhl der vorstehend erläuterten Art weist eine hervorragende Stabilität auf und ermöglicht eine federnde Aufnahme der Räder, welche einen Betrieb auch auf unebenen Wegen zulässt. Gleichzeitig erlaubt der Aufbau dieses Rollstuhls ein Zerlegen in einzelne Baugruppen, was einen Transport des Rollstuhls im Kofferraum eines handelsüblichen PKWs ermöglicht. Nach Entfernen der vier Räder von den Lenkern, was sich zum Beispiel mittels Steckachsen und Schnellverschlusseinrichtungen äußerst einfach gestaltet, sowie nach Entfernen der Sitzeinrichtung und gegebenenfalls der Akkumulatoren verbleibt lediglich der Grundkörper mit den vier Lenkern, wobei diese Baugruppe ein flächiges Bauelement darstellt, das leicht transportierbar ist. Die einzelnen Räder sowie die Akkumulatoren können ebenfalls leicht verstaut werden und die Sitzeinrichtung kann durch einen entsprechenden Klappmechanismus gleichfalls in eine platzsparende flächige Form gebracht werden.A wheelchair of the type described above has excellent stability and allows resilient reception of the wheels, which allows operation even on uneven roads. At the same time allows the construction of this wheelchair disassembly into individual modules, which allows transport of the wheelchair in the trunk of a standard car. After removal of the four wheels of the handlebars, which is extremely simple, for example by means of thru axles and quick release devices, and after removal of the seat assembly and possibly the accumulators remains only the main body with the four links, this assembly is a sheet-like device that can be easily transported is. The individual wheels and the accumulators can also be easily stowed and the seat device can be brought by a corresponding folding mechanism also in a space-saving flat shape.
Insbesondere für den Einsatz von Elektromotoren als Antriebseinrichtung kann der Grundkörper an den Befestigungsstellen der Antriebsräder und/oder der Sitzeinrichtung und/oder der Akkumulatoren Schnittstellen für elektrische Leitungen aufweisen. Ein Bedienpult kann an einer Armstütze der Sitzeinrichtung vorgesehen sein. Es besteht zudem die Möglichkeit, eine drahtlose Signalübertragung von dem Bedienpult auf die Antriebsräder vorzusehen, wobei im Falle der Verwendung von Nabenmotoren jeder Nabenmotor eine separate Steuereinheit aufweisen kann. In diesem Fall entfällt die Notwendigkeit von Leitungen für Steuersignale. Bei der Verwendung von Akkumulatoren, die an dem Grundkörper befestigt werden, muss dann lediglich eine Stromübertragung zu den Nabenmotoren bereitgestellt werden.In particular, for the use of electric motors as drive means of the base body at the attachment points of the drive wheels and / or the Seat device and / or the accumulators have interfaces for electrical lines. A control panel may be provided on an armrest of the seat assembly. It is also possible to provide a wireless signal transmission from the control panel to the drive wheels, wherein in the case of using hub motors each hub motor may have a separate control unit. In this case eliminates the need for lines for control signals. With the use of accumulators, which are attached to the body, then only a power transmission to the hub motors must be provided.
Sofern die Akkumulatoren ebenfalls in den Radnaben der Antriebsräder untergebracht sind und eine drahtlose Signalübertragung der Steuerbefehle vorgesehen ist, entfällt die Notwendigkeit von elektrischen Leitungen zwischen Fahrgestell und Rädern vollständig.If the accumulators are also housed in the hubs of the drive wheels and a wireless signal transmission of the control commands is provided, eliminating the need for electrical lines between the chassis and wheels completely.
Die Erfindung wird im folgenden weiter erläutert anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung, in der
- Fig. 1 eine perspektivische auseinandergezogene Darstellung eines Rollstuhls ist,
- Fig. 2 eine perspektivische Darstellung des Rollstuhls gemäß Fig. 1 ist, bei dem die Hauptbaugruppen mit Ausnahme des Bedienpults in zusammengefügter Weise dargestellt sind,
- Fig. 3 eine perspektivische Darstellung des Rollstuhls gemäß den Figuren 1 und 2 unter Weglassung der Sitzeinrichtung ist,
- Fig. 4 eine Darstellung gemäß Fig. 3 mit einem zusätzlich angebrachten Schutzbügel ist,
- Fig. 5 eine der Darstellung in Fig. 3 entsprechende Seitenansicht ist,
- Fig. 6 eine Seitenansicht eines frei verschwenkbaren Rades mit Steighilfe vor der Berührung mit einer Stufe und
- Fig. 7 eine Fig. 6 entsprechende Darstellung während des Überwindens einer Stufe ist.
- 1 is a perspective exploded view of a wheelchair,
- Fig. 2 is a perspective view of the wheelchair of Fig. 1, in which the main assemblies, except for the control panel, are shown in a mated manner;
- FIG. 3 is a perspective view of the wheelchair according to FIGS. 1 and 2 with the seating device omitted; FIG.
- FIG. 4 is an illustration according to FIG. 3 with an additionally attached protective bar; FIG.
- 5 is a side view corresponding to the illustration in FIG. 3, FIG.
- Fig. 6 is a side view of a freely pivoting wheel with climbing aid before contact with a step and
- Fig. 7 is a representation corresponding to Fig. 6 during the overcoming of a step.
Fig. 1 zeigt als Ausführungsbeispiel der Erfindung einen Rollstuhl perspektivisch in einer sogenannten Explosionsdarstellung, d.h. einer auseinandergezogenen Darstellung. Ein Grundkörper 10 ist in Form eines Strangpressprofiles 11 aus einer Aluminiumlegierung bereitgestellt. Das Strangpressprofil 11 ist an seinen beiden Längsenden mittels entsprechend verschraubter Endplatten 12 verschlossen. In dem im wesentlichen hohlen Innenraum des Grundkörpers 10 können Versteifungselemente (nicht gezeigt) oder sonstige Baugruppen, beispielsweise Schaltgeräte etc. (nicht gezeigt) angeordnet sein. Auf der Oberseite 13 des Grundkörpers 10 ist eine Aufnahmeeinrichtung 14 vorgesehen, die mittels einer nicht näher dargestellten Schnellverschlusseinrichtung der leicht lösbaren Befestigung einer Sitzeinrichtung 50 dient.Fig. 1 shows as an embodiment of the invention, a wheelchair in perspective in a so-called exploded view, i. an exploded view. A
Die Sitzeinrichtung 50 weist Rahmenprofile auf, die zusammen mit einer nicht dargestellten Bespannung oder Bepolsterung eine Sitzfläche 51, eine Sitzrücklehne 52, eine Fußstütze 53 und eine Strebe 54 zur Befestigung eines Bedienpults 60 ergeben. Es versteht sich, dass Armstützen (nicht dargestellt) auf beiden Seiten bereitgestellt werden können.The
Es versteht sich zudem, dass andere Konstruktionsvarianten für die Sitzeinrichtung möglich sind, beispielsweise eine Sitzfläche und eine Rückenlehne, gegebenenfalls mit entsprechenden Seitenteilen, als selbsttragende Struktur mit entsprechenden Verbindungselementen zum Grundkörper oder einem entsprechenden Sitzrahmen.It is also understood that other design variants for the seat assembly are possible, for example, a seat and a backrest, optionally with corresponding side parts, as a self-supporting structure with corresponding connection elements to the main body or a corresponding seat frame.
Die Sitzeinrichtung ist mit einem Klappmechanismus versehen, der es erlaubt, die von dem Grundkörper 10 gelöste Sitzeinrichtung 50 so zusammenzufalten, dass sie ein leicht transportierbares, im wesentlichen flächenförmiges Element ergibt.The seat assembly is provided with a folding mechanism that allows it to be detached from the
An dem Grundkörper 10 sind, jeweils auf der linken und rechten Seite, in Fahrtrichtung gesehen, zwei vordere Lenker 20 und zwei hintere Lenker 30 angelenkt. Die hinteren Lenker 30 sind als Längslenker ausgeführt, die sich über eine Feder/Dämpfer-Anordnung 31 an dem Grundkörper 10 abstützen. Die vorderen Lenker 20 sind als Doppellenker ausgeführt, die über einen im Inneren des Grundkörpers 10 angeordneten, nicht dargestellten Feder/Dämpfer-Mechanismus miteinander gekoppelt sind.On the
Zwei Antriebsräder 35 sind mittels horizontal verlaufender Steckachsen 36 und nicht näher dargestellter Schnellverschlusseinrichtungen an den hinteren Lenkern 30 angelenkt. Zwei frei verschwenkbare Vorderräder 25 sind mittels vertikal angeordneter Steckachsen 26 und ebenfalls nicht näher dargestellter Schnellverschlusseinrichtungen an den vorderen Lenkern 20 angelenkt. Wie beispielsweise aus den Figuren 5 bis 7 ersichtlich, ist die Lage der Drehachse 27 des Vorderrades 25 gegenüber der Lage der Steckachse 26 im Einbauzustand versetzt, so dass sich ein Nachlauf ergibt, der die Vorderräder 25 bei Geradeausfahrt immer in Fahrtrichtung ausrichtet. Das Steuern des Rollstuhls erfolgt durch eine getrennte Ansteuerung der beiden angetriebenen Hinterräder 35, wobei der Antrieb vorzugsweise über nicht näher dargestellte Nabenmotoren erfolgt, welche als Elektromotoren ausgeführt sind, und wobei die Lenkbefehle über das Steuerpult 60 eingegeben werden.Two
Der als Doppellenker ausgeführte vordere Lenker 20 ist so ausgeführt, dass über den gesamten verfügbaren Federweg der Nachlauf des Vorderrades 25 im wesentlichen konstant bleibt.The designed as a double
Ein oder mehrere Akkumulatoren 70 können mittels Schnellverschlusseinrichtungen an dem Grundkörper 10 eingehängt werden. Die Schnellverschlusseinrichtungen für die Befestigung der Akkumulatoren 70 weisen Schnittstellen für elektrische Leitungen auf, die eine elektrische Verbindung der Akkumulatoren 70 mit den Nabenmotoren bereitstellen.One or
Eine Schutzeinrichtung in Form eines Schutzbügels 80 kann, vorzugsweise abnehmbar, an dem Grundkörper 10 befestigt sein.A protective device in the form of a
An den Vorderrädern 25 ist jeweils eine Steighilfe 28 vorgesehen. Die Steighilfe 28 ist paarweise pro Vorderrad 25 ausgelegt und federbelastet beidseitig jedes Vorderrades 25 so gelagert, dass sie im normalen Betriebszustand die in Fig. 6 dargestellte Stellung einnimmt. Die Steighilfe 28 kann über einen bestimmten Weg in der durch den Pfeil A in den Figuren 6 und 7 angezeigten Drehrichtung des Rades um ihre Schwenkachse 29 verschwenkt werden.At the
In den Figuren 6 und 7 ist zur Erläuterung der Funktion der Steighilfe 28 der Einfachheit halber jeweils lediglich das Vorderrad 25 dargestellt. Wenn der Rollstuhl mit dem Vorderrad voraus auf eine Bordsteinkante 90 zufährt, befindet sich die Steighilfe 28 zunächst in der durch die Federkraft vorgegebenen obersten Verschwenkstellung. Sobald die Steighilfe 28 mit der Bordsteinkante 90 in Berührung gelangt, verschwenkt die Steighilfe 28 infolge der durch die Antriebsräder bereitgestellten Vortriebskraft in der Drehrichtung des Vorderrades 25. Hierdurch wird das Vorderrad 25 angehoben, bis es in einer geeigneten Stellung mit der Bordsteinkante so in Berührung gelangt, dass es bei weiterer Vorwärtsbewegung die durch die Bordsteinkante 90 gegebene Stufe überwinden kann.In FIGS. 6 and 7, only the
Durch die direkte Anlenkung der Steighilfen 28 an den frei verschwenkbaren Vorderrädern 25 ist gewährleistet, dass die Steighilfen 28 immer in geeigneter Ausrichtung zu einem Hindernis stehen, insbesondere dann, wenn schräg an einen Bordstein bzw. eine sonstige Stufe herangefahren wird. Es versteht sich jedoch, dass eine Anlenkung der Steighilfen auch direkt an dem Grundkörper möglich ist.The direct articulation of the climbing aids 28 on the freely pivotable
Beim Zerlegen des Rollstuhls können mittels einfacher Schnellverschlüsse die Sitzeinrichtung 50, die Akkumulatoren 70, die Hinterräder 35 und die Vorderräder 25 entfernt werden, wobei die Sitzeinrichtung 50 nach dem Entfernen entsprechend zusammengeklappt bzw. zusammengefaltet werden kann. Hierdurch ergeben sich einzelne Bauelemente, die platzsparend transportiert werden können und insbesondere im Kofferraum eines handelsüblichen PKWs untergebracht werden können. Durch die Zerlegbarkeit ist zudem gewährleistet, dass die einzelnen Bauelemente ein relativ geringes Gewicht haben, so dass die Bauelemente leicht verstaut werden können. Durch die Bereitstellung von Schnellverschlüssen ist das Zerlegen des Rollstuhls auch von technisch unbegabten Personen ohne jegliches Werkzeug einfach möglich.When disassembling the wheelchair, the
Trotz der leichten Zerlegbarkeit des Rollstuhls ist dieser aufgrund seiner erfindungsgemäßen Konstruktion dazu geeignet, auch im Outdoor-Betrieb eingesetzt zu werden. Er verbindet somit den Komfort von vier gefederten Rädern und die für den Outdoor-Betrieb erforderliche Stabilität mit der Leichtigkeit und Transportabilität eines gewöhnlichen Indoor-Rollstuhls.Despite the easy disassembly of the wheelchair this is due to its construction according to the invention suitable to be used in outdoor operation. It thus combines the comfort of four sprung wheels and the stability required for outdoor use with the ease and portability of a standard indoor wheelchair.
Claims (17)
- Wheel chair comprising a chassis, wheels (25, 35) and a seat component (50), the chassis comprising a monocoque-type main body (10) designed as a monolith at which four arms (20, 30) are springably coupled for supporting the wheels (25, 35) and on which the seat component (50) can be fixed, characterized in that the main body (10) is made from an extruded profile and the wheels (25, 35) are detachably mounted at the arms (20, 30) by means of quick release devices.
- Wheel chair according to claim 1, characterized in that the main body (10) is made of aluminium or an aluminium alloy.
- Wheel chair according to claim 1, characterized in that the main body (10) is made of plastic.
- Wheel chair according to any of the preceding claims, characterized in that two freely pivotable wheels (25) and two drive wheels (35) are provided.
- Wheel chair according to claim 4, characterized in that the drive wheel (35) comprises a hub motor.
- Wheel chair according to claim 4 or 5, characterized in that the drive wheels (35) can be driven by means of an electric motor.
- Wheel chair according to any of the preceding claims, characterized in that the seat component (50) can be detachably fixed to the main body (10) by means of a quick release device.
- Wheel chair according to any of the preceding claims, characterized in that one or more rechargeable batteries (70) can be fixed to the main body (10).
- Wheel chair according to claim 8, characterized in that the rechargeable battery or the rechargeable batteries (70) can be optionally mounted at two opposite sides of the main body (10).
- Wheel chair according to claim 8 or 9, characterized in that optionally one or several rechargeable batteries (70) can be mounted at the main body (10), wherein in case of operation with one rechargeable battery the same can be mounted in a central position with respect to the vehicle axis, and in case of operation with several rechargeable batteries, the same can be mounted symmetrically with respect to the vehicle axis.
- Wheel chair according to any of the preceding claims, characterized in that the seat component (50) comprises a seat (51), a seat back (52), at least one arm rest and a foot rest (53).
- Wheel chair according to claim 11, characterized in that the seat component (50) is foldable.
- Wheel chair according to any of the preceding claims, characterized in that the front arms (20) for supporting the freely pivotable wheels (25) are designed as springably supported dual arms defining a caster of the freely pivotable wheels (25) that remains substantially constant over the full range of travel of the spring system.
- Wheel chair according to any of the preceding claims, characterized in that the quick release devices for detachably mounting the pivotable wheels (25) at the front arms (20) comprise plug-in axles (26) extending perpendicular to the ground.
- Wheel chair according to any of the preceding claims, characterized in that the rear arms (30) for supporting the drive wheels (35) are designed as longitudinal arms which are supported at the main body via a spring/shock absorber unit (31).
- Wheel chair according to any of the preceding claims, characterized in that the main body comprises interfaces for electric circuits at the mounting locations for the drive wheels and/or the seat component and/or the rechargeable batteries.
- Wheel chair according to any of the preceding claims, characterized in that the seat component (50) can be mounted to the monocoque-type main body (10) so as to be rotatable, preferably about 180°.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10136369A DE10136369C2 (en) | 2001-07-26 | 2001-07-26 | Small vehicle, especially a wheelchair |
DE10136369 | 2001-07-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1279391A2 EP1279391A2 (en) | 2003-01-29 |
EP1279391A3 EP1279391A3 (en) | 2003-10-08 |
EP1279391B1 true EP1279391B1 (en) | 2006-10-04 |
Family
ID=7693133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02015399A Expired - Lifetime EP1279391B1 (en) | 2001-07-26 | 2002-07-11 | Wheelchair |
Country Status (8)
Country | Link |
---|---|
US (1) | US20030122332A1 (en) |
EP (1) | EP1279391B1 (en) |
AT (1) | ATE341300T1 (en) |
CA (1) | CA2394417A1 (en) |
DE (2) | DE10136369C2 (en) |
DK (1) | DK1279391T3 (en) |
ES (1) | ES2273952T3 (en) |
NO (1) | NO318350B1 (en) |
Cited By (8)
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US8172016B2 (en) | 2000-10-27 | 2012-05-08 | Invacare Corporation | Obstacle traversing wheelchair |
US8172015B2 (en) | 2001-10-10 | 2012-05-08 | Invacare Corporation | Wheelchair suspension |
US8272461B2 (en) | 2007-02-08 | 2012-09-25 | Invacare Corporation | Wheelchair suspension |
US8534679B2 (en) | 2002-10-25 | 2013-09-17 | Invacare Corporation | Suspension for wheeled vehicles |
US8573341B2 (en) | 2001-10-19 | 2013-11-05 | Invacare Corporation | Wheelchair suspension |
US8910975B2 (en) | 2007-02-14 | 2014-12-16 | Invacare Corporation | Wheelchair with suspension |
US9010470B2 (en) | 2009-10-09 | 2015-04-21 | Invacare Corporation | Wheelchair suspension |
US9308143B2 (en) | 2012-02-15 | 2016-04-12 | Invacare Corporation | Wheelchair suspension |
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US6663122B1 (en) * | 2002-07-18 | 2003-12-16 | Wan-Hsing Lin | Stroller frame |
US11213441B2 (en) | 2002-10-25 | 2022-01-04 | Invacare Corporation | Suspension for wheeled vehicles |
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DE102004015603B3 (en) * | 2004-03-30 | 2005-04-14 | Otto Bock Healthcare Gmbh | Dismountable electric wheelchair with central lever used for operation of locking between seat and frame unit and drive unit and between drive unit and removable battery |
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US7413045B2 (en) * | 2005-11-30 | 2008-08-19 | Karma Medical Products Co., Ltd. | Battery quick-release structure for an electric mobility scooter |
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ITPD20110170A1 (en) * | 2011-05-25 | 2012-11-26 | Rinaldi Fabio | WHEELCHAIR FOR FOLDABLE AND DIVISIBLE DISABLED DISABLED |
FR3046980A1 (en) * | 2016-01-21 | 2017-07-28 | Franck Andre-Marie Guigan | OBSTACLE CROSSING DEVICE FOR VEHICLE |
DE202019100213U1 (en) * | 2019-01-15 | 2019-01-31 | Ciar S.P.A. | armchair |
US11903887B2 (en) | 2020-02-25 | 2024-02-20 | Invacare Corporation | Wheelchair and suspension systems |
CN111803293B (en) * | 2020-06-17 | 2024-07-05 | 杭州树仁科技有限公司 | Inconvenient patient of motion is with cat ladder machine with brake function |
CN111803292B (en) * | 2020-06-17 | 2024-07-05 | 杭州树仁科技有限公司 | Patient with mobility impairment uses cat ladder machine |
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2001
- 2001-07-26 DE DE10136369A patent/DE10136369C2/en not_active Expired - Fee Related
-
2002
- 2002-07-11 DE DE50208316T patent/DE50208316D1/en not_active Expired - Lifetime
- 2002-07-11 DK DK02015399T patent/DK1279391T3/en active
- 2002-07-11 ES ES02015399T patent/ES2273952T3/en not_active Expired - Lifetime
- 2002-07-11 AT AT02015399T patent/ATE341300T1/en not_active IP Right Cessation
- 2002-07-11 EP EP02015399A patent/EP1279391B1/en not_active Expired - Lifetime
- 2002-07-19 CA CA002394417A patent/CA2394417A1/en not_active Abandoned
- 2002-07-25 NO NO20023548A patent/NO318350B1/en unknown
- 2002-07-25 US US10/202,606 patent/US20030122332A1/en not_active Abandoned
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US8172016B2 (en) | 2000-10-27 | 2012-05-08 | Invacare Corporation | Obstacle traversing wheelchair |
US9149398B2 (en) | 2000-10-27 | 2015-10-06 | Invacare Corporation | Obstacle traversing wheelchair |
US8925943B2 (en) | 2001-10-10 | 2015-01-06 | Invacare Corp. | Wheelchair suspension |
US8172015B2 (en) | 2001-10-10 | 2012-05-08 | Invacare Corporation | Wheelchair suspension |
US9370455B2 (en) | 2001-10-10 | 2016-06-21 | Invacare Corporation | Wheelchair suspension |
US8573341B2 (en) | 2001-10-19 | 2013-11-05 | Invacare Corporation | Wheelchair suspension |
US9364377B2 (en) | 2002-10-25 | 2016-06-14 | Invacare Corporation | Suspension for wheeled vehicles |
US8534679B2 (en) | 2002-10-25 | 2013-09-17 | Invacare Corporation | Suspension for wheeled vehicles |
US8794359B2 (en) | 2007-02-08 | 2014-08-05 | Invacare Corporation | Wheelchair suspension |
US8272461B2 (en) | 2007-02-08 | 2012-09-25 | Invacare Corporation | Wheelchair suspension |
US8910975B2 (en) | 2007-02-14 | 2014-12-16 | Invacare Corporation | Wheelchair with suspension |
US9346335B2 (en) | 2007-02-14 | 2016-05-24 | Invacare Corporation | Stability control system |
US11850906B2 (en) | 2007-02-14 | 2023-12-26 | Invacare Corporation | Stability control system |
US9010470B2 (en) | 2009-10-09 | 2015-04-21 | Invacare Corporation | Wheelchair suspension |
US9913768B2 (en) | 2009-10-09 | 2018-03-13 | Invacare Corporation | Wheelchair suspension |
US9308143B2 (en) | 2012-02-15 | 2016-04-12 | Invacare Corporation | Wheelchair suspension |
Also Published As
Publication number | Publication date |
---|---|
US20030122332A1 (en) | 2003-07-03 |
EP1279391A2 (en) | 2003-01-29 |
NO318350B1 (en) | 2005-03-07 |
DE50208316D1 (en) | 2006-11-16 |
DE10136369A1 (en) | 2003-02-20 |
ATE341300T1 (en) | 2006-10-15 |
EP1279391A3 (en) | 2003-10-08 |
ES2273952T3 (en) | 2007-05-16 |
NO20023548L (en) | 2003-01-27 |
CA2394417A1 (en) | 2003-01-26 |
DE10136369C2 (en) | 2003-05-28 |
DK1279391T3 (en) | 2007-01-29 |
NO20023548D0 (en) | 2002-07-25 |
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