EP3501468B1 - Leader guidance device for a wheelchair and wheelchair train with a leader guidance device - Google Patents
Leader guidance device for a wheelchair and wheelchair train with a leader guidance device Download PDFInfo
- Publication number
- EP3501468B1 EP3501468B1 EP18202482.8A EP18202482A EP3501468B1 EP 3501468 B1 EP3501468 B1 EP 3501468B1 EP 18202482 A EP18202482 A EP 18202482A EP 3501468 B1 EP3501468 B1 EP 3501468B1
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- EP
- European Patent Office
- Prior art keywords
- hollow body
- steering
- steering device
- leading
- main part
- 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.)
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- 229910052782 aluminium Inorganic materials 0.000 claims description 7
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- 230000036316 preload Effects 0.000 description 25
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Images
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
- A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system
Definitions
- the invention relates to a preload steering device for a wheelchair and a wheelchair combination with a preload steering device.
- Wheelchairs for people with disabilities usually have two large drive wheels (rear wheels), which are arranged at the rear when viewed in the forward direction, and two small, freely swiveling running wheels (front wheels) which are arranged in the forward direction, which are also called castors.
- the rear wheels can usually be driven by hand using a hand ring.
- electrically driven rear wheels can also be used.
- Known rear wheels which are designed as an auxiliary drive device, have both an electric drive motor and a hand ring for manual drive and additionally a sensor that detects a drive force introduced manually into the hand ring, as well as a control device that controls the electric drive motor depending on size and Controls the direction of the drive force introduced manually into the hand ring and an adjustable degree of support for delivering a corresponding torque.
- the front wheels of the wheelchair which are designed as freely swiveling castors, ensure a high degree of maneuverability, which is indispensable especially in so-called indoor operation, i.e. when the wheelchair is used in closed rooms.
- indoor operation i.e. when the wheelchair is used in closed rooms.
- the small front wheels are disadvantageous and make it impossible to operate the wheelchair even with relatively minor unevenness.
- small front wheels would dip into depressions from which they could not come out because of their ability to overcome an obstacle, which is clearly limited by the small diameter, which then makes it impossible to continue driving.
- preload steering devices have therefore been developed for wheelchairs in the form of removable additional devices that make it possible to functionally supplement and modify the wheelchair designed for indoor use so that it is more suitable for outdoor use.
- a preload steering device is mounted on a wheelchair in such a way that the preload steering device is first placed in front of the wheelchair as seen in the direction of travel and the freely pivoting front wheels of the wheelchair are raised during the assembly process so that the wheelchair combination assembled in this way is ready for operation
- a vehicle that only touches the ground on which it is traveling with the wheel or wheels of the preload steering device and the two large rear wheels of the wheelchair.
- a bias steering device for a wheelchair is for example from EP 3 020 383 A1 known.
- the structure of such a preload steering device usually provides a fork which is used for the steerable mounting of the wheel of the preload steering device, also referred to below as the main wheel.
- the so-called fork crown of the fork is non-rotatably connected to a fork shaft, also referred to below as the steering shaft.
- the steering shaft is connected to the frame of the prestressing steering device in that it is rotatably mounted and held in a control tube. On the outside of such a control tube, components are attached that are used to mount the preload steering device on a wheelchair, as well other components such as a battery for an electric drive motor.
- preload steering device and, on the other hand, keep its mass as low as possible so that handling by the person sitting in the wheelchair is as easy as possible.
- a bias steering device is from DE 840 575 B known.
- the present invention is based on the object of improving a preload steering device for a wheelchair in view of what has been set out above and to provide a wheelchair combination provided with such a preloading steering device.
- the prestressing steering device according to the invention and the wheelchair combination according to the invention with such a prestressing steering device take these aspects into account with corresponding features in several respects.
- a hollow body for the storage of the steering shaft i.e. a component which, in addition to a steering shaft shaft that is required anyway for receiving the steering shaft, has a further or further hollow spaces, offers, compared to an otherwise solid component, like a head tube known from bicycle construction, with the same mass a higher strength and stability.
- the hollow body forms, if necessary with other components, preferably also designed as hollow bodies, to which it is firmly connected, for example by welding, a monocoque component that not only offers high stability and strength with comparatively low weight, but can also combine several functions at the same time .
- a monocoque component with several functions is a multifunctional monocoque.
- one or more recesses or cavities within the hollow body can be used to accommodate components.
- components include, for example, one or more accumulators, but also function control transmission elements.
- a function control transmission element is, for example, a hydraulic or pneumatic control line, an electrical line or an element for the mechanical transmission of forces, for example a Bowden cable.
- the preload steering device according to the invention can be provided with a drive motor which drives a main or drive wheel of the preload steering device. This then not only represents a preload steering device, but is also a traction device for the wheelchair.
- FIGS. 1 and 2 show an embodiment of a wheelchair combination 500 according to the invention, in which an embodiment of a prestressing steering device 100 according to the invention is coupled ready for operation to a commercially available wheelchair 300.
- FIGS Figures 3 to 18 Details of the embodiment of the bias steering device 100 according to the invention are shown in FIGS Figures 3 to 18 shown.
- the prestressing steering device 100 has a monocoque component 101, that is to say a self-supporting, unitary component which has a hollow body main part 201 of a hollow body 200 and a connecting part 280 designed as a down tube in the present exemplary embodiment.
- a steering shaft 141 is rotatably mounted in the hollow body 200 or in the hollow body main part 201 of the monocoque component 101.
- the steering shaft 141 is the fork shaft of a fork 104 whose fork crown 142, which is connected to the fork shaft (steering shaft) 141 in a rotationally fixed manner, guides a main wheel 105 which can be driven by an electric motor 106 and braked by a disc brake 107.
- a handlebar 110 is attached to the upper end of the handlebar shaft 141. Operating elements for controlling the electric motor 106 and actuating the disc brake 107 are arranged on the handlebar 110.
- the monocoque component fulfills several functions, it is a multifunctional monocoque.
- the hollow body 200 in the present embodiment by means of the hollow body main part 201, serves to support the steering shaft 141 and to accommodate function control transmission elements, while the connecting part 280, optionally in conjunction with further elements, as will be described below, the connection of the prestressing steering device 100 to the wheelchair 300 is used.
- the preload steering device 100 can be connected to a commercially available wheelchair 300 via a mounting arrangement 130 to form the wheelchair combination 500.
- the mounting arrangement 130 (see in particular Fig. 5 ) is arranged at the outer end of the connecting part 280 of the monocoque component 101 of the prestressing steering device 100 and is designed so that it is adjustable and can be connected to a large number of commercially available wheelchairs 300.
- the bias steering device 100 is provided with a stand 290.
- the stand 290 is attached to the connecting part 280 of the monocoque component 101 of the preload steering device 100. It will be understood by those skilled in the art that such a stand 290 can also be attached to other positions of a preload steering device.
- the stand 290 is provided with two rolling wheels arranged on a ground contacting portion of the stand.
- the stand makes it possible to hold the preload steering device 100 when it is decoupled from the wheelchair 300 in an assembly position in which the preload steering device 100 stands on the main wheel 105 and the two rolling wheels of the stand 290.
- roller wheels instead of the roller wheels, other components can also be used to bring the stand 200 into contact with the ground, wherein these components can be both movable components and rigid components.
- the wheels do not touch the ground on which the wheelchair combination 500 is standing. They are thus also lifted from the ground in relation to the installation position of the prestressing steering device 100, just as the front wheels 302 of the wheelchair 300 are lifted from the ground compared to a position in which the wheelchair, without being coupled to a prestressing steering device 100, is on its front wheels 302 and its rear wheels 301 stands.
- the stand 290 is connected to the preload steering device 100 at its upper end of the mounting portion.
- the rolling wheels are attached to the lower end of the ground contacting section.
- a spring device is arranged between the ground contacting section and the mounting section. The spring device enables the ground contact section to be able to pivot elastically with the roller wheels when it comes into contact with an obstacle. In particular, there is elastic pivoting in the direction of travel, that is to say in a direction that is shown in FIG Fig. 2 runs from left to right and vice versa, possible.
- the spring device can also be arranged at other locations on the stand, including the upper end of the stand, that is to say, in the embodiment shown, the upper end of the mounting section.
- an otherwise rigid stand for example, could thus be connected to a corresponding connecting part of a preload steering device with the interposition of a spring device.
- the spring device has two rubber-metal buffers which are screwed to a first carrier plate of the ground contact section and to a second carrier plate of the mounting section opposite the first carrier plate.
- Very suitable rubber-metal buffers of this type are, for example, vibration metal buffers from Reiff Technische Kunststoff GmbH, Reutlingen, Germany, in which an elastomer is arranged between two plates made of galvanized steel. These vibrating metal buffers have a circular cylindrical shape and have a spring stiffness in the direction of the cylinder axis which is considerably greater than the spring stiffness in the radial direction.
- two rubber-metal buffers of this type are arranged at a distance from one another in an arrangement direction which runs perpendicular to the straight-ahead driving direction of the wheelchair combination and parallel to the floor.
- the spring device thus has a spring stiffness in the straight-ahead driving direction that is lower than in a direction which is perpendicular to the straight-ahead driving direction of the wheelchair and parallel to the ground, the latter spring stiffness being even less than that in a direction perpendicular to the ground.
- the structure of the monocoque component 101, the hollow body 200 and the hollow body main part 201 and their interaction with corresponding components of the prestressing steering device 100 are described below.
- the monocoque component 101 has the hollow body 200.
- An essential element of the hollow body 200 is the hollow body main part 201.
- the connecting part 280 is fastened to the hollow body main part 201.
- the hollow body main part 201 can be made of aluminum, for example as an extruded profile.
- the connecting part 280 can also be made from Be made of aluminum, for example by means of a hydroforming process.
- the connection of the connecting part 280 to the hollow body main part 201 can take place by welding.
- the mounting arrangement 130 can have a component 131 which can be inserted into the connecting part 280 designed as a down tube, as well as a latching mechanism 132 which engages in a corresponding latching recess 281 of the connecting part 280 (see FIG Fig. 16 ).
- a head end cover 202 is attached.
- an accumulator that is, a rechargeable battery 203 can be used (see Fig. 16 ).
- the accumulator 203 is designed in such a way that, when it is inserted into the hollow body 200, it forms a harmonious surface with the latter, and has contact points which, when the accumulator 203 is inserted into the recess 205 of the hollow body 200 ready for operation, are in conductive engagement with electrical contacts 206 which are formed in the hollow body 200.
- a seat for an upper steering head bearing 240 and a seat for a lower steering head bearing 250 are arranged on the hollow body 200.
- the upper steering head bearing 240 and the lower steering head bearing 250 are used to support the steering shaft 141.
- An arrangement of the upper steering head bearing 240 and the lower steering head bearing 250 on the hollow body 200 within the meaning of the invention is an arrangement in which the hollow body provides structural support for the storage of the Steering shaft 141 provides. This can be done in various ways, in particular by the fact that the hollow body 200 interacts with on the one hand special configurations of areas of the hollow body 200 and on the other hand other components that are used to hold the upper steering head bearing 240 and the lower steering head bearing 250 on or in the hollow body 200 , this hold guaranteed.
- An exemplary embodiment of this storage shown in the figures is explained below, with particular reference to the Figures 11 to 14 is referred.
- An upper headset support plate 241 which can be made of aluminum and serves to hold the upper steering head bearing 240, is screwed to an upper end of the main hollow body part 201 by means of two screws.
- the handlebar holder 242 thus also functions as a headset holding element.
- a steering head bearing nut 243 made, for example, of steel is screwed onto a thread formed for this purpose on the steering shaft 141 and enables the arrangement and adjustment of the play of the steering head bearing to be maintained.
- the lower steering head bearing 250 is held between a lower headset support plate 251, for example made of aluminum, which is screwed to a lower end of the hollow body main part 201, and the fork crown 142.
- FIG. 11 shows a perspective view of the hollow body main part 201 and FIG Fig. 17
- FIG. 11 shows a plan view of the hollow body main part 201, that is to say a view from above, based on the illustration according to FIG Fig. 18 .
- the hollow body main part 201 according to the present embodiment is produced from aluminum by an extrusion process. It will be understood by those skilled in the art that numerous other materials, for example metals, metal alloys, plastics, and / or fiber composite materials, and other manufacturing and shaping processes can be selected.
- the hollow body 200 has a structural strength which enables the steering shaft 141 to be supported and thus can absorb the forces occurring during operation of the wheelchair combination 500, and on the other hand, at the same time, thanks to its design as a hollow body, Receiving space for both the steering shaft 141 and for function control transmission elements, in particular for hydraulic or pneumatic control lines, for example brake lines of hydraulic brakes, electrical lines such as cables, and elements for the mechanical transmission of forces, for example Bowden cables for brakes or mechanical switching mechanisms.
- the main hollow body part 201 according to the present embodiment is of particular importance because, in conjunction with the connecting part 280, it enables a monocoque structure in this regard.
- screw channels 261 are formed which are used for screwing to the upper headset carrier plate 241.
- screw channels 262 are formed which are used for screwing to the lower headset carrier plate 251.
- Further screw channels 263 at the upper end of the main hollow body part 201 are used for screwing to the head end cover 202.
- the screw channels can already be created in the extruded profile and the screwing can be carried out by means of thread-forming screws. It goes without saying that the person skilled in the art also has further alternatives in this regard, for example threads already provided in the extruded profile or the use of thread inserts.
- the hollow body main part 201 is designed in such a way that it has the frontal recess 205 for receiving the accumulator 203.
- a wall 271 is formed which, together with a corresponding part of the rear outer wall of the hollow body main part 201, defines a steering shaft shaft 270 for receiving the steering shaft 141.
- the wall 271 at the same time forms the rear wall of the recess 205.
- the wall 271, together with corresponding projections 273, forms function control transmission element shafts 275 for function control transmission elements.
- grommet recesses 277 for receiving grommets 278 (see in particular Figures 13 and 14th ) intended.
- the grommets 278 have flexible openings through which function control transmission elements can be passed.
- function control transmission elements hydraulic brake lines 108 are shown in the figures (see in particular Fig. 3 ).
- a brake lever 109 is attached to each handle of the handlebar 110, from which a hydraulic brake line 108 leads to a respective separate brake caliper of the disc brake 107. This results in additional security in that, although there is only one disc brake, it can be braked with either hand.
- This cable runs through a further opening in the head end cover 202, not explicitly shown in the figures. It goes without saying that further function control transmission elements, which are not shown in the figures for the sake of clarity, are provided and into or through the hollow body this can be laid through. This includes, for example, an electrical line that leads away from a control element designed in the manner of a throttle grip on motorcycles at the end of the handlebar 110 or a cable that leads away from a USB socket, which can be arranged on the head end cover 202, for example .
- Function control transfer element shafts 275 allow these function control transfer elements to be laid safely and avoid damage and contamination, as well as tangling or entanglement therein.
- the hollow body 200 ensures a high level of stability with regard to the mounting of the steering shaft and thus the guidance of the main wheel 105 while at the same time having a low mass compared to a solid component, such as a control tube known from bicycle construction.
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- Motorcycle And Bicycle Frame (AREA)
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Description
Die Erfindung betrifft eine Vorspannlenkvorichtung für einen Rollstuhl und ein Rollstuhlgespann mit einer Vorspannlenkvorrichtung.The invention relates to a preload steering device for a wheelchair and a wheelchair combination with a preload steering device.
Rollstühle für Menschen mit Behinderung verfügen üblicherweise über zwei große, in Vorwärtsfahrtrichtung gesehen hinten angeordnete Antriebsräder (Hinterräder) und zwei kleine, frei schwenkbare und in Vorwärtsfahrtrichtung vorne angeordnete Laufräder (Vorderräder), die auch Castoren genannt werden. Die Hinterräder sind bei manuell antreibbaren Rollstühlen in der Regel von Hand über einen Greifring antreibbar. Alternativ können auch elektrisch angetriebene Hinterräder verwendet werden. Zudem sind, beispielsweise aus der
Die als frei schwenkbare Castoren ausgeführten Vorderräder des Rollstuhls gewährleisten eine hohe Manövrierfähigkeit, die insbesondere bei sogenanntem Indoor-Betrieb, das heißt bei einer Verwendung des Rollstuhls in geschlossenen Räumen, unabdingbar ist. Bei Outdoor-Betrieb, das heißt bei Betrieb außerhalb geschlossener Räume und insbesondere auf unebenen Wegen, sind die kleinen Vorderräder hingegen nachteilig und machen schon bei relativ geringen Unebenheiten einen Betrieb des Rollstuhls unmöglich. Beispielsweise würden kleine Vorderräder in Vertiefungen eintauchen, aus denen sie wegen ihrer durch den kleinen Durchmesser deutlich eingeschränkten Fähigkeit zum Überwinden eines Hindernisses nicht herauskommen könnten, was dann ein Weiterfahren unmöglich macht.The front wheels of the wheelchair, which are designed as freely swiveling castors, ensure a high degree of maneuverability, which is indispensable especially in so-called indoor operation, i.e. when the wheelchair is used in closed rooms. When used outdoors, that is In contrast, when operating outside of closed spaces and especially on uneven paths, the small front wheels are disadvantageous and make it impossible to operate the wheelchair even with relatively minor unevenness. For example, small front wheels would dip into depressions from which they could not come out because of their ability to overcome an obstacle, which is clearly limited by the small diameter, which then makes it impossible to continue driving.
Es sind daher für Rollstühle sogenannte Vorspannlenkvorrichtungen entwickelt worden in Form abnehmbarer Zusatzeinrichtungen, die es ermöglichen, den für den Indoor-Betrieb ausgelegten Rollstuhl funktional so zu ergänzen und zu verändern, dass er für den Outdoor-Betrieb besser geeignet ist. Die Montage einer derartigen Vorspannlenkvorrichtung an einen Rollstuhl erfolgt derart, dass die Vorspannlenkvorrichtung zunächst von in Fahrtrichtung gesehen vorne vor dem Rollstuhl platziert wird und im Zuge der Montage die frei schwenkbaren Vorderräder des Rollstuhls angehoben werden, so dass im betriebsfertigen Zustand des derart zusammengefügten Rollstuhlgespanns dieses ein Fahrzeug ist, das den Boden, auf dem es fährt, lediglich berührt mit dem Rad oder den Rädern der Vorspannlenkvorrichtung und den beiden großen Hinterrädern des Rollstuhls. Eine derartige Vorspannlenkvorrichtung für einen Rollstuhl ist beispielsweise aus der
Der Aufbau einer derartigen Vorspannlenkvorrichtung sieht in Anlehnung an den Fahrradbau üblicherweise eine Gabel vor, die zur lenkbaren Lagerung des Rades der Vorspannlenkvorrichtung, im Folgenden auch Hauptrad genannt, dient. Die sogenannte Gabelkrone der Gabel ist drehfest mit einem Gabelschaft, im Folgenden auch Lenkschaft genannt, verbunden. Der Lenkschaft ist mit dem Rahmen der Vorspannlenkvorrichtung dadurch verbunden, dass er in einem Steuerrohr drehbar gelagert und gehalten ist. Außen an einem derartigen Steuerrohr sind Bauelemente befestigt, die der Montage der Vorspannlenkvorrichtung an einem Rollstuhl dienen, sowie weitere Bauteile wie eine Batterie für einen elektrischen Antriebsmotor. Eine derartige Anordnung, wie sie aus der
Eine andere Problematik liegt darin, einerseits die für die Aufnahme der im Betrieb auftretenden Kräfte hinreichende Stabilität derAnother problem is, on the one hand, the stability of the which is sufficient to absorb the forces that occur during operation
Vorspannlenkvorrichtung sicherzustellen und andererseits deren Masse so gering wie möglich zu halten, damit die Handhabung durch die im Rollstuhl sitzende Person möglichst leicht ist.Ensure preload steering device and, on the other hand, keep its mass as low as possible so that handling by the person sitting in the wheelchair is as easy as possible.
Eine Vorspannlenkvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1 ist aus der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorspannlenkvorrichtung für einen Rollstuhl im Hinblick auf das vorstehend Dargelegte zu verbessern und ein mit einer derartigen Vorspannlenkvorrichtung versehenes Rollstuhlgespann bereitzustellen.The present invention is based on the object of improving a preload steering device for a wheelchair in view of what has been set out above and to provide a wheelchair combination provided with such a preloading steering device.
Die erfindungsgemäße Vorspannlenkvorrichtung und das erfindungsgemäße Rollstuhlgespann mit einer derartigen Vorspannlenkvorrichtung tragen diesen Aspekten mit entsprechenden Merkmalen in mehrerer Hinsicht Rechnung.The prestressing steering device according to the invention and the wheelchair combination according to the invention with such a prestressing steering device take these aspects into account with corresponding features in several respects.
Die Verwendung eines Hohlkörpers für die Lagerung des Lenkschaftes, das heißt eines Bauteils, das neben einem ohnehin notwendigen Lenkschaft-Schacht zur Aufnahme des Lenkschaftes einen weiteren oder weitere Hohlräume aufweist, bietet gegenüber einem ansonsten massiven Bauteil, wie es ein aus dem Fahrradbau bekanntes Steuerrohr darstellt, bei gleicher Masse eine höhere Festigkeit und Stabilität.The use of a hollow body for the storage of the steering shaft, i.e. a component which, in addition to a steering shaft shaft that is required anyway for receiving the steering shaft, has a further or further hollow spaces, offers, compared to an otherwise solid component, like a head tube known from bicycle construction, with the same mass a higher strength and stability.
Der Hohlkörper bildet, gegebenenfalls mit weiteren, vorzugsweise ebenfalls als Hohlkörper ausgeführten Bauelementen, mit denen er fest verbunden wird, beispielsweise durch Schweißen, ein Monocoquebauteil, das nicht nur eine hohe Stabilität und Festigkeit bei vergleichsweise geringem Gewicht bietet, sondern auch gleichzeitig mehrere Funktionen verbinden kann. Ein derartiges Monocoquebauteil mit mehreren Funktionen stellt ein Multifunktionsmonocoque dar.The hollow body forms, if necessary with other components, preferably also designed as hollow bodies, to which it is firmly connected, for example by welding, a monocoque component that not only offers high stability and strength with comparatively low weight, but can also combine several functions at the same time . Such a monocoque component with several functions is a multifunctional monocoque.
Insbesondere können ein oder mehrere Ausnehmungen oder Hohlräume innerhalb des Hohlkörpers zur Aufnahme von Bauteilen genutzt werden. Hierzu zählen beispielsweise ein oder mehrere Akkumulatoren, aber auch Funktionssteuerungsübertragungselemente. Ein Funktionssteuerungsübertragungselement ist beispielsweise eine hydraulische oder pneumatische Steuerleitung, eine elektrische Leitung oder ein Element zur mechanischen Übertragung von Kräften, beispielsweise ein Bowdenzug.In particular, one or more recesses or cavities within the hollow body can be used to accommodate components. These include, for example, one or more accumulators, but also function control transmission elements. A function control transmission element is, for example, a hydraulic or pneumatic control line, an electrical line or an element for the mechanical transmission of forces, for example a Bowden cable.
Die erfindungsgemäße Vorspannlenkvorrichtung kann mit einem Antriebsmotor versehen sein, der ein Haupt- bzw. Antriebsrad der Vorspannlenkvorrichtung antreibt. Diese stellt dann nicht nur eine Vorspannlenkvorrichtung dar, sondern ist gleichzeitig ein Zugmittel für den Rollstuhl.The preload steering device according to the invention can be provided with a drive motor which drives a main or drive wheel of the preload steering device. This then not only represents a preload steering device, but is also a traction device for the wheelchair.
Die Erfindung sowie das technische Umfeld werden nachfolgend anhand der Figuren näher erläutert. Es ist darauf hinzuweisen, dass die Figuren besonders bevorzugte Ausführungsvarianten der Erfindung zeigen. Die Erfindung ist jedoch nicht auf die gezeigten Ausführungsvarianten beschränkt. Insbesondere umfasst die Erfindung, soweit es technisch sinnvoll ist, beliebige Kombinationen der technischen Merkmale, die in den Ansprüchen aufgeführt oder in der Beschreibung als erfindungsrelevant beschrieben sind.The invention and the technical environment are explained in more detail below with reference to the figures. It should be pointed out that the figures show particularly preferred embodiment variants of the invention. However, the invention is not limited to the embodiment variants shown. In particular, as far as it is technically sensible, the invention includes any combination of the technical features that are listed in the claims or described in the description as being relevant to the invention.
Es zeigen:
- Fig. 1
- eine perspektivische Ansicht einer Ausführungsform eines Rollstuhlgespanns,
- Fig. 2
- eine Seitenansicht des Rollstuhlgespanns gemäß
Fig. 1 , - Fig. 3
- eine erste perspektivische Ansicht einer Ausführungsform einer Vorspannlenkvorrichtung,
- Fig. 4
- eine Seitenansicht der Vorspannlenkvorrichtung gemäß
Fig. 3 , - Fig. 5
- eine zweite perspektivische Ansicht der Vorspannlenkvorrichtung gemäß
Fig. 3 , - Fig. 6
- eine Seitenansicht einer Ausführungsform eines Multifunktionsmonocoques mit Ständer,
- Fig. 7
- eine Seitenansicht des Multifunktionsmonocoques gemäß
Fig. 6 mit weggelassener Kopfende-Abdeckkappe, - Fig. 8
- eine Detailansicht einer oberen Lagerstelle eines Lenkkopflagers,
- Fig. 9
- eine Detailansicht einer unteren Lagerstelle eines Lenkkopflagers,
- Fig. 10
- eine Explosionsansicht des Multifunktionsmonocoques gemäß
Fig. 6 in Seitenansicht, - Fig. 11
- eine Explosionsansicht des Multifunktionsmonocoques gemäß
Fig. 6 in einer ersten perspektivischen Ansicht, - Fig. 12
- eine Explosionsansicht des Multifunktionsmonocoques gemäß
Fig. 6 in einer zweiten perspektivischen Ansicht, - Fig. 13
- eine Explosionsansicht der oberen Lagerstelle gemäß
Fig. 8 , - Fig. 14
- eine Explosionsansicht der unteren Lagerstelle gemäß
Fig. 9 , - Fig. 15
- eine Explosionsansicht des Multifunktionsmonocoques gemäß
Fig. 6 in einer dritten perspektivischen Ansicht, - Fig. 16
- eine Explosionsansicht des Multifunktionsmonocoques gemäß
Fig. 6 in einer vierten perspektivischen Ansicht, - Fig. 17
- eine Draufsicht auf ein Hohlkörperhauptteil und
- Fig. 18
- eine perspektivische Ansicht eines Hohlkörperhauptteils.
- Fig. 1
- a perspective view of an embodiment of a wheelchair combination,
- Fig. 2
- a side view of the wheelchair team according to
Fig. 1 , - Fig. 3
- a first perspective view of an embodiment of a preload steering device,
- Fig. 4
- a side view of the bias steering device according to
Fig. 3 , - Fig. 5
- a second perspective view of the preload steering device according to
Fig. 3 , - Fig. 6
- a side view of an embodiment of a multifunctional monocoque with stand,
- Fig. 7
- a side view of the multifunction monocoque according to
Fig. 6 with omitted head end cap, - Fig. 8
- a detailed view of an upper bearing point of a steering head bearing,
- Fig. 9
- a detailed view of a lower bearing point of a steering head bearing,
- Fig. 10
- an exploded view of the multifunction monocoque according to
Fig. 6 in side view, - Fig. 11
- an exploded view of the multifunction monocoque according to
Fig. 6 in a first perspective view, - Fig. 12
- an exploded view of the multifunction monocoque according to
Fig. 6 in a second perspective view, - Fig. 13
- an exploded view of the upper bearing point according to
Fig. 8 , - Fig. 14
- an exploded view of the lower bearing point according to
Fig. 9 , - Fig. 15
- an exploded view of the multifunction monocoque according to
Fig. 6 in a third perspective view, - Fig. 16
- an exploded view of the multifunction monocoque according to
Fig. 6 in a fourth perspective view, - Fig. 17
- a plan view of a hollow body main part and
- Fig. 18
- a perspective view of a hollow body main part.
Die Figuren sind im Maßstab nicht einheitlich, damit anhand von Vergrößerungen Einzelheiten deutlicher dargestellt werden können. Zudem sind zum Zwecke der Übersichtlichkeit nicht in allen Darstellungen alle Bezugszeichen eingezeichnet, um die Darstellungen nicht zu überladen. Jedes Bezugszeichen ist jedoch zumindest auf einer Figur eingetragen und die gedankliche Übertragung auf andere Figuren stellt den Fachmann vor keine Probleme.The figures are not uniform in scale so that details can be shown more clearly by means of enlargements. In addition, for the sake of clarity, not all of the reference symbols have been drawn in in all representations so as not to overload the representations. However, each reference symbol is entered on at least one figure and the transfer of ideas to other figures does not pose any problems for the person skilled in the art.
Die
Einzelheiten der Ausführungsform der erfindungsgemäßen Vorspannlenkvorrichtung 100 sind in den
Die Vorspannlenkvorrichtung 100 weist ein Monocoquebauteil 101 auf, das heißt ein selbsttragendes einheitliches Bauteil, das ein Hohlkörperhauptteil 201 eines Hohlkörpers 200 sowie ein, im vorliegenden Ausführungsbeispiel als Unterrohr ausgeführtes, Verbindungsteil 280 aufweist. In dem Hohlkörper 200 bzw. in dem Hohlkörperhauptteil 201 des Monocoquebauteils 101 ist ein Lenkschaft 141 drehbar gelagert. Der Lenkschaft 141 ist der Gabelschaft einer Gabel 104, deren Gabelkrone 142, die mit dem Gabelschaft (Lenkschaft) 141 drehfest verbunden ist, ein Hauptrad 105 führt, das durch einen Elektromotor 106 angetrieben und über eine Scheibenbremse 107 gebremst werden kann. An dem oberen Ende des Lenkschafts 141 ist eine Lenkerstange 110 befestigt ist. Bedienungselemente für die Ansteuerung des Elektromotors 106 und die Betätigung der Scheibenbremse 107 sind an der Lenkerstange 110 angeordnet.The
Da das Monocoquebauteil mehrere Funktionen erfüllt, ist es ein Multifunktionsmonocoque.Since the monocoque component fulfills several functions, it is a multifunctional monocoque.
Wie nachfolgend noch eingehend erläutert wird, dient der Hohlkörper 200, in der vorliegenden Ausführungsform mittels des Hohlkörperhauptteils 201, der Lagerung des Lenkschaftes 141 und der Aufnahme von Funktionssteuerungsübertragungselementen, während das Verbindungsteil 280, gegebenenfalls in Verbindung mit weiteren Elementen, wie nachfolgend noch beschrieben wird, der Anbindung der Vorspannlenkvorrichtung 100 an den Rollstuhl 300 dient.As will be explained in detail below, the
Die Vorspannlenkvorrichtung 100 kann über eine Montageanordnung 130 mit einem handelsüblichen Rollstuhl 300 verbunden werden zu dem Rollstuhlgespann 500. Die Montageanordnung 130 (siehe insbesondere
Wie insbesondere aus
Die Vorspannlenkvorrichtung 100 ist mit einem Ständer 290 versehen. In der dargestellten Ausführungsform ist der Ständer 290 an dem Verbindungsteil 280 des Monocoquebauteils 101 der Vorspannlenkvorrichtung 100 befestigt. Es versteht sich für den Fachmann, dass ein derartiger Ständer 290 auch an anderen Positionen einer Vorspannlenkvorrichtung befestigt werden kann.The
Der Ständer 290 ist mit zwei Rollrädern versehen, die an einem Bodenberührabschnitt des Ständers angeordnet sind. Der Ständer ermöglicht es, die Vorspannlenkvorrichtung 100 dann, wenn sie von dem Rollstuhl 300 entkoppelt ist, in einer Montagestellung zu halten, in der die Vorspannlenkvorrichtung 100 auf dem Hauptrad 105 und den beiden Rollrädern des Ständers 290 steht. Es versteht sich, dass statt der Rollräder auch andere Bauteile verwendet werden können, um den Ständer 200 mit dem Boden in Berührung zu bringen, wobei diese Bauteile sowohl bewegliche Bauteile als auch starre Bauteile sein können.The
In der Betriebsstellung der Vorspannlenkvorrichtung 100, das heißt in der Stellung, in der die Vorspannlenkvorrichtung 100 mit dem Rollstuhl 300 zu einem Rollstuhlgespann 500 verbunden ist, wie sie in
Der Ständer 290 ist mit seinem oberen Ende des Montageabschnitts mit der Vorspannlenkvorrichtung 100 verbunden. Wie bereits ausgeführt, sind die Rollräder am unteren Ende des Bodenberührabschnitts befestigt. Zwischen dem Bodenberührabschnitt und dem Montageabschnitt ist eine Federeinrichtung angeordnet. Die Federeinrichtung ermöglicht es, dass der Bodenberührabschnitt mit den Rollrädern elastisch verschwenken kann, wenn er mit einem Hindernis in Berührung kommt. Insbesondere ist ein elastisches Verschwenken in Fahrtrichtung, das heißt in einer Richtung, die bei der Darstellung gemäß
Es versteht sich, dass die Federeinrichtung auch an anderen Stellen des Ständers angeordnet sein kann, einschließlich dem oberen Ende des Ständers, das heißt bei der dargestellten Ausführungsform dem oberen Ende des Montageabschnitts. Bei einer derartigen Ausführungsform, die in den Figuren nicht gezeigt ist, könnte somit ein beispielsweise im Übrigen starrer Ständer unter Zwischenschaltung einer Federeinrichtung mit einem entsprechenden Verbindungsteil einer Vorspannlenkvorrichtung verbunden sein.It goes without saying that the spring device can also be arranged at other locations on the stand, including the upper end of the stand, that is to say, in the embodiment shown, the upper end of the mounting section. In such an embodiment, which is shown in is not shown in the figures, an otherwise rigid stand, for example, could thus be connected to a corresponding connecting part of a preload steering device with the interposition of a spring device.
Die Federeinrichtung weist zwei Gummi-Metall-Puffer auf, die mit einer ersten Trägerplatte des Bodenberührabschnitts und einer der ersten Trägerplatte gegenüberliegenden zweiten Trägerplatte des Montageabschnitts verschraubt sind. Gut geeignet als derartige Gummi-Metall-Puffer sind beispielsweise Schwingmetallpuffer der Firma Reiff Technische Produkte GmbH, Reutlingen, Deutschland, bei denen ein Elastomer zwischen zwei Platten aus verzinktem Stahl angeordnet ist. Diese Schwingmetallpuffer weisen eine kreiszylindrische Form auf und haben eine Federsteifigkeit in Richtung der Zylinderachse, die erheblich größer ist als die Federsteifigkeit in radialer Richtung. Bei der in den Figuren gezeigten Ausführungsformen des Ständers 290 sind zwei derartige Gummi-Metall-Puffer zueinander beabstandet in einer Anordnungsrichtung angeordnet, die senkrecht zur Geradeausfahrrichtung des Rollstuhlgespanns und parallel zum Boden verläuft. Die Federeinrichtung weist somit eine Federsteifigkeit in Geradeausfahrrichtung auf, die geringer ist als in einer Richtung, welche senkrecht zur Geradeausfahrrichtung des Rollstuhlgespanns und parallel zum Boden verläuft, wobei die letztgenannte Federsteifigkeit nochmals geringer ist als diejenige in einer Richtung senkrecht zum Boden.The spring device has two rubber-metal buffers which are screwed to a first carrier plate of the ground contact section and to a second carrier plate of the mounting section opposite the first carrier plate. Very suitable rubber-metal buffers of this type are, for example, vibration metal buffers from Reiff Technische Produkte GmbH, Reutlingen, Germany, in which an elastomer is arranged between two plates made of galvanized steel. These vibrating metal buffers have a circular cylindrical shape and have a spring stiffness in the direction of the cylinder axis which is considerably greater than the spring stiffness in the radial direction. In the embodiment of the
Nachfolgend werden der Aufbau des Monocoquebauteils 101, des Hohlkörpers 200 und des Hohlkörperhauptteils 201 und deren Zusammenwirken mit entsprechenden Komponenten der Vorspannlenkvorrichtung 100 beschrieben.The structure of the
Das Monocoquebauteil 101 weist den Hohlkörper 200 auf. Ein wesentliches Element des Hohlkörpers 200 ist der Hohlkörperhauptteil 201 An dem Hohlkörperhauptteil 201 ist das Verbindungsteil 280 befestigt. Das Hohlkörperhauptteil 201 kann aus Aluminium gefertigt sein, beispielsweise als Strangpressprofil. Das Verbindungsteil 280 kann ebenfalls aus Aluminium gefertigt sein, beispielsweise mittels eines Hydroformingverfahrens. Die Verbindung des Verbindungsteils 280 mit dem Hohlkörperhauptteil 201 kann durch Schweißen erfolgen. Die Montageanordnung 130 kann ein Bauelement 131 aufweisen, das in das als Unterrohr ausgeführte Verbindungsteil 280 einführbar ist, sowie einen Rastmechanismus 132, der in eine entsprechende Rast-Ausnehmung 281 des Verbindungsteils 280 eingreift (siehe
An dem, bezogen auf die beispielsweise in
An dem Hohlkörper 200 sind ein Sitz für ein oberes Lenkkopflager 240 und ein Sitz für ein unteres Lenkkopflager 250 angeordnet. Das obere Lenkkopflager 240 und das untere Lenkkopflager 250 dienen der Lagerung des Lenkschafts 141. Eine Anordnung des oberen Lenkkopflagers 240 und des unteren Lenkkopflagers 250 an dem Hohlkörper 200 im Sinne der Erfindung ist eine Anordnung, in denen der Hohlkörper den strukturellen Halt für die Lagerung des Lenkschafts 141 bereitstellt. Dies kann auf verschiedene Weisen erfolgen, insbesondere dadurch, dass der Hohlkörper 200 im Zusammenwirken von einerseits speziellen Ausgestaltungen von Bereichen des Hohlkörpers 200 und andererseits weiteren Bauteilen, die dem Halten des oberen Lenkkopflagers 240 und des unteren Lenkkopflagers 250 an bzw. in dem Hohlkörper 200 dienen, diesen Halt gewährleistet. Eine in den Figuren dargestellte beispielhafte Ausführungsform dieser Lagerung wird nachfolgend erläutert, wobei insbesondere auf die
Eine obere Steuersatzträgerplatte 241, die aus Aluminium gefertigt sein kann und der Aufnahme des oberen Lenkkopflagers 240 dient, ist mittels zweier Schrauben an einem oberen Ende des Hohlkörperhauptteils 201 verschraubt. Ein Lenkerstangenhalter 242, an dem die Lenkerstange 110 befestigt werden und der ebenfalls aus Aluminium gefertigt sein kann, ist auf den Lenkschaft 141 aufgeklemmt. Der Lenkerstangenhalter 242 fungiert somit auch als Steuersatzhalteelement.An upper
Eine beispielsweise aus Stahl gefertigte Lenkkopflagermutter 243 ist auf ein hierzu an dem Lenkschaft 141 ausgebildetes Gewinde geschraubt und ermöglicht ein Halten der Anordnung und Einstellen des Spiels des Lenkkopflagers.A steering
Das untere Lenkkopflager 250 wird gehalten zwischen einer unteren Steuersatzträgerplatte 251, beispielsweise gefertigt aus Aluminium, die mit einem unteren Ende des Hohlkörperhauptteils 201 verschraubt ist, und der Gabelkrone 142.The lower steering head bearing 250 is held between a lower
Nachfolgend wird die Ausgestaltung der Hohlkörperhauptteils 201 näher erläutert, wobei insbesondere auf die
Am oberen Ende des Hohlkörperhauptteils 201 sind Schraubkanäle 261 ausgebildet, die der Verschraubung mit der oberen Steuersatzträgerplatte 241 dienen. Am unteren Ende des Hohlkörperhauptteils 201 sind Schraubkanäle 262 ausgebildet, die der Verschraubung mit der unteren Steuersatzträgerplatte 251 dienen. Weitere Schraubkanäle 263 am oberen Ende des Hohlkörperhauptteils 201 dienen der Verschraubung mit der Kopfende-Abdeckung 202. Die Schraubkanäle können bereits im Strangpressprofil angelegt sein und die Verschraubung kann mittels gewindefurchender Schrauben erfolgen. Es versteht sich, dass dem Fachmann zudem weitere diesbezügliche Alternativen zur Verfügung stehen, beispielsweise in dem Strangpressprofil bereits vorgesehene Gewinde oder die Verwendung von Gewindeeinsätzen.At the upper end of the main
Das Hohlkörperhauptteil 201 gemäß der vorliegenden Ausführungsform ist so ausgebildet, dass es die stirnseitige Ausnehmung 205 zur Aufnahme des Akkumulators 203 aufweist. In dem Hohlkörperhauptteil 201 ist eine Wand 271 ausgebildet, die zusammen mit einem entsprechenden Teil der rückwärtigen Außenwand des Hohlkörperhauptteils 201 einen Lenkschaft-Schacht 270 zur Aufnahme des Lenkschafts 141 definiert. Die Wand 271 bildet gleichzeitig die Rückwand der Ausnehmung 205. Zudem bildet die Wand 271 zusammen mit entsprechenden Vorsprüngen 273 Funktionssteuerungsübertragungselemente-Schächte 275 für Funktionssteuerungsübertragungselemente.The hollow body
Am oberen und unteren Ende des Hohlkörperhauptteils 201 sind Tüllen-Ausnehmungen 277 zur Aufnahme von Tüllen 278 (siehe insbesondere
Die Tüllen 278 weisen flexible Öffnungen auf, durch die Funktionssteuerungsübertragungselemente hindurch geführt werden können. Als Beispiel für Funktionssteuerungsübertragungselemente sind in den Figuren hydraulische Bremsleitungen 108 dargestellt (siehe insbesondere
Die Tüllen 278 und weitere entsprechende, nicht dargestellte Öffnungen sowie die Ausgestaltung des Hohlkörpers 200 mit den am Hohlkörperhauptkörper 201 ausgebildeten Funktionssteuerungsübertragungselemente-Schächten 275 ermöglichen es, dass diese Funktionssteuerungsübertragungselemente sicher verlegt werden können und deren Beschädigung und Verschmutzen sowie ein Verheddern oder Verfangen darin vermieden wird.The
Gleichzeitig gewährleistet der Hohlkörper 200 eine hohe Stabilität bezüglich der Lagerung des Lenkschaftes und damit der Führung des Hauptrades 105 bei gleichzeitig geringer Masse, verglichen mit einem massiven Bauteil, wie es beispielsweise ein aus dem Fahrradbau bekanntes Steuerrohr darstellt.At the same time, the
- 100100
- VorspannlenkvorrichtungBias steering device
- 101101
- MonocoquebauteilMonocoque component
- 104104
- Gabelfork
- 105105
- HauptradMain wheel
- 106106
- ElektromotorElectric motor
- 107107
- ScheibenbremseDisc brake
- 108108
- BremsleitungBrake line
- 109109
- BremshebelBrake lever
- 110110
- LenkerstangeHandlebar
- 130130
- MontageanordnungMounting arrangement
- 131131
- BauelementComponent
- 132132
- RastmechanismusLocking mechanism
- 141141
- LenkschaftSteering shaft
- 142142
- GabelkroneFork crown
- 200200
- HohlkörperHollow body
- 201201
- HohlkörperhaupteilHollow body main part
- 202202
- Kopfende-AbdeckungHead end cover
- 203203
- Akkumulator (wiederaufladbare Batterie)Accumulator (rechargeable battery)
- 205205
- AusnehmungRecess
- 206206
- elektrischer Kontaktelectric contact
- 240240
- oberes Lenkkopflagerupper steering head bearing
- 241241
- obere Steuersatzträgerplatteupper headset support plate
- 242242
- Steuersatzhalteelement/LenkerstangenhalterHeadset holder element / handlebar holder
- 243243
- LenkkopflagermutterSteering head bearing nut
- 250250
- unteres Lenkkopflagerlower steering head bearing
- 251251
- untere Steuersatzträgerplattelower headset support plate
- 261261
- SchraubkanalScrew channel
- 262262
- SchraubkanalScrew channel
- 263263
- SchraubkanalScrew channel
- 264264
- Anzeige- und SteuergerätDisplay and control device
- 265265
- elektrisches Kabelelectrical cable
- 270270
- Lenkschaft-SchachtSteering shaft well
- 271271
- WandWall
- 273273
- Vorsprunghead Start
- 275275
- Funktionssteuerungsübertragungselemente-SchachtFunction control transmission element bay
- 277277
- Tüllen-AusnehmungGrommet recess
- 278278
- Tüllegrommet
- 280280
- VerbindungsteilConnecting part
- 281281
- RastausnehmungLocking recess
- 290290
- StänderStand
- 300300
- Rollstuhlwheelchair
- 301301
- HinterräderRear wheels
- 302302
- VorderräderFront wheels
- 500500
- RollstuhlgespannWheelchair team
Claims (12)
- Leading steering device (100) for a wheel chair (300), wherein the leading steering device (100) comprises at least one wheel (105) that is steerable via a steering shaft (141),
with a hollow body (200), wherein the hollow body (200) comprises:a seat for an upper steering head bearing (240) for mounting the steering shaft (141),a seat for a lower steering head bearing (250) for mounting the steering shaft (141),a steering shaft duct (270) for receiving the steering shaft (141),at least one entry point (277) for at least one function control transmission element (108, 265), andat least one exit point (277) for at least one function control transmission element (108, 265),wherein a function control transmission element (108, 265) is an element of a group of elements, comprising a hydraulic or pneumatic control line (108), an electric line (265), or an element for the mechanical transmission of forces,characterized bya monocoque component (101) designed as a self-supporting uniform component comprising the hollow body (200) with a hollow body main part (201) and a connection part (280),wherein the connection part (280) serves to connect the leading steering device (100) to the wheel chair (300), andwherein a wall (271) is embodied in the hollow body main part (201) which defines, together with a corresponding part of an outer wall of the hollow body main part (201), a steering shaft duct (270) for receiving the steering shaft. - Leading steering device (100) according to claim 1, characterized in that the wall (271) forms, together with corresponding projections (273), function control transmission element ducts (275) for function control transmission elements.
- Leading steering device (100) according to claim 1 or 2, characterized in that the wall (271) defines, together with a corresponding part of a rear outer wall of the hollow body main part (201), a steering shaft duct (270) for receiving the steering shaft.
- Leading steering device (100) according to claim 1, 2 or 3, characterized in that the hollow body main part (201) comprises a recess (205) for receiving an accumulator (203), and that the wall (271) forms a rear wall of the recess (205).
- Leading steering device (100) according to one of the preceding claims, characterized in that the seat for the upper steering head bearing (240) comprises an upper control set support plate (241) and a control set retaining element (242), wherein the upper steering head bearing (240) is retained between the upper control set support plate (241) and the control set retaining element (242).
- Leading steering device (100) according to claim 5, characterized in that the steering shaft (141) comprises a thread, and the steering head bearing clearance is adjustable by means of a steering head bearing nut (243) screwed onto the thread of the steering shaft (141) via the control set retaining element (242).
- Leading steering device (100) according to one of the preceding claims 5 or 6, characterized in that the control set retaining element (242) is embodied as a handlebar retainer (242).
- Leading steering device (100) according to one of the preceding claims, characterized in that the seat for the lower steering head bearing (250) comprises a lower control set support plate (251), wherein the lower steering head bearing (250) is retained between the lower control set support plate (251) and a fork crown (142).
- Leading steering device (100) according to one of the preceding claims, characterized in that the hollow body main part (201) is manufactured as a uniform component by extrusion.
- Leading steering device (100) according to one of the preceding claims, characterized in that the connection part (280) is welded to the hollow body main part (201).
- Leading steering device (100) according to claim 10, characterized in that the connection part (280) and the hollow body main part (201) are made from aluminium, the connection part (280) preferably by a hydroforming process.
- Wheel chair combination (500) with a leading steering device (100) for a wheel chair (300) according to one of the preceding claims 1 to 11.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102017130681.1A DE102017130681B3 (en) | 2017-12-20 | 2017-12-20 | Tension steering device for a wheelchair and wheelchair combination with pretension steering device |
Publications (2)
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EP3501468A1 EP3501468A1 (en) | 2019-06-26 |
EP3501468B1 true EP3501468B1 (en) | 2021-09-01 |
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Application Number | Title | Priority Date | Filing Date |
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EP18202482.8A Active EP3501468B1 (en) | 2017-12-20 | 2018-10-25 | Leader guidance device for a wheelchair and wheelchair train with a leader guidance device |
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EP (1) | EP3501468B1 (en) |
DE (1) | DE102017130681B3 (en) |
Families Citing this family (3)
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KR20220042693A (en) * | 2020-09-28 | 2022-04-05 | 현대자동차주식회사 | Traction module of personal mobility, personal mobility including the same, and control method of personal mobility |
KR200498003Y1 (en) * | 2022-08-22 | 2024-05-17 | 주식회사 프론테크 | An electric assist device to provide an auxiliary power source for a wheelchair |
KR102666603B1 (en) * | 2022-08-22 | 2024-05-20 | 주식회사 프론테크 | An electric assist device to provide an auxiliary power source for a wheelchair |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE840575C (en) | 1949-01-16 | 1952-06-03 | Karl Willuhn | Room elevator with hand drive for the physically handicapped |
US2892506A (en) * | 1956-01-17 | 1959-06-30 | James A Slater | Electrically driven invalid chair |
US3023825A (en) * | 1958-11-17 | 1962-03-06 | Rabjohn Rodney Robert | Power operated wheel chair |
US3213957A (en) * | 1962-08-27 | 1965-10-26 | Wessex Ind Poole Ltd | Self-propelled wheel chair |
US3387681A (en) * | 1966-02-14 | 1968-06-11 | Rodney R. Rabjohn | Power operated wheel chair |
US5651422A (en) * | 1994-04-22 | 1997-07-29 | The Center For Innovative Technology | Universal-fit, quick-connect power drive/steer attachment for wheelchair |
DE19857786C2 (en) | 1998-03-21 | 2000-05-31 | Alber Ulrich Gmbh & Co Kg | Auxiliary drive device for self-drive wheelchairs |
CA2527727A1 (en) * | 2003-05-30 | 2004-12-09 | Izumi, D.O.O. | Supplementary driving mechanism of the muscle-driven vehicle for accelerated rehabilitation of a paralyzed arm |
US7216728B2 (en) * | 2004-07-02 | 2007-05-15 | Chao-Kuo Huang | Motorized apparatus for towing a wheelchair |
ES2425316B1 (en) | 2013-07-08 | 2014-08-05 | Batec Mobility, S.L. | Auxiliary wheelchair mobility system |
-
2017
- 2017-12-20 DE DE102017130681.1A patent/DE102017130681B3/en active Active
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