EP2106777B1 - Wheelchair - Google Patents
Wheelchair Download PDFInfo
- Publication number
- EP2106777B1 EP2106777B1 EP09001451.5A EP09001451A EP2106777B1 EP 2106777 B1 EP2106777 B1 EP 2106777B1 EP 09001451 A EP09001451 A EP 09001451A EP 2106777 B1 EP2106777 B1 EP 2106777B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting element
- chassis frame
- wheelchair according
- brace
- wheelchair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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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
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
- A61G5/085—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair
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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
- A61G5/0866—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable folding down backrest, e.g. where the backrest folds down onto the seat support
-
- 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
- A61G5/1054—Large wheels, e.g. higher than the seat portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards
-
- 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
- A61G5/1081—Parts, details or accessories with shock absorbers or other suspension arrangements between frame and seat
Definitions
- the invention relates to a wheelchair, in particular a wheelchair with a rigid frame.
- a collapsible wheelchair frame is known in which on an upper frame part which carries a seat, at the rear end pivotally a connecting lever is mounted, which carries a rear wheel.
- This connecting lever is articulated via a lower frame part with a front frame part, which in turn is pivotally connected to the upper frame part. It thus forms a four-joint mechanism.
- a side plate is pivotally provided at the hinge point between the connecting lever and the upper frame part, on which in turn a backrest strut is pivotally mounted, which is lockable in an upright pivot position with the side plate.
- the invention has for its object to provide a wheelchair of the type mentioned, which avoids the disadvantages of the prior art with a simple structure and simple, cost-effective manufacturability and in the folded state has a low packing volume.
- the wheelchair has a rigid chassis frame, on which steerable front wheels are mounted. These are preferably fastened in different positions in order to adjust the inclination of the chassis frame or the seat height in this way.
- each side a connecting element is pivotally mounted, which supports a rear wheel and carries a backrest strut and a seat stay supports.
- the connecting element with the chassis frame, with the seat stay as well as with a at the front area of the seat stay and the chassis frame rotatably mounted support element a four-bar mechanism.
- the construction according to the invention is characterized by the considerable advantage that not only the backrest strut is mitverschwenkt at a pivoting of the connecting element, but also caused by the four-bar mechanism, and the seat stay is swung.
- the overall height in the folded position can be significantly reduced.
- Another advantage of the embodiment of the invention is that only a single handle is required to bring the wheelchair from the use position to the folding position and vice versa. Operating errors can thus be completely excluded.
- the two lateral connecting elements each store an axle, to which a continuous rear axle is attached, which carries at its two ends in each case the two rear wheels releasably.
- the rear axle thus forms a structural element, which also has an influence on the overall rigidity of the wheelchair frame and additionally serves as a carrying handle in the folded position.
- the seat back strut Due to the construction according to the invention, it is possible to pivot the seat back strut from a substantially vertical position of use to a substantially horizontal folded position (relative to the position of the chassis frame in the position of use).
- the backrest strut is preferably brought substantially parallel to the seatstay.
- the seat strut is preferably pivoted from an angular position relative to the horizontal position which it occupies in the position of use, so that it comes to lie substantially parallel to upper elements of the chassis frame. This leads to the already mentioned significant reduction of the volume in the folded position.
- the wheelchair in a preferred development on a locking device which locks the wheelchair both in the position of use and in the folded position. In the use position is thus excluded that the wheelchair is unintentionally adjusted or collapses. In the folded position, the wheelchair is also reliably fixed and can therefore be easily and simply handled and worn.
- the locking device is preferably designed so that it is mounted on the chassis frame and blocks the pivotal movement of the connecting element, both in the position of use and in the folded position. It is particularly advantageous if the locking device can be operated with a pull rope or the like. This makes the operation easier, on the other hand results in a very low overall weight.
- the wheelchair according to the invention comprises a chassis frame 1, which comprises a top tube 12 and a down tube 13, which are firmly connected to each other and form a parallelogram-like side structure (see, for example Fig. 7 ).
- a chassis frame 1 which comprises a top tube 12 and a down tube 13, which are firmly connected to each other and form a parallelogram-like side structure (see, for example Fig. 7 ).
- On the down tube 13 bearings 14 are provided, on which in different positions steerable, pivotable in swivel forks mounted front wheels 2 are mounted.
- the chassis frame 1 continues to bear at its front lower portion a example in Fig. 1 illustrated tread plate or footrest, which is additionally telescopic and thus height adjustable.
- the two side parts of the chassis frame 1, which are formed from the top tube 12 and the down tube 13 are connected to each other by means of a transverse strut 15.
- This is pivotable about a first transverse axis 16 and connected to struts 17, which extend perpendicular to the transverse strut 15.
- the free ends of the struts 17 in turn are connected to a cross tube 19, which forms a second transverse axis 18, so that the cross tube 19 about the second transverse axis 18 is pivotable relative to a seat transverse strut 20.
- This in turn is connected to a seat stay 6.
- the cross strut 15, the struts 17 and the cross tube 19 form a support member 7, which is part of a four-bar mechanism.
- the rear end region of the chassis frame 1, in particular of the top tube 12, is articulated to form a third transverse axis 21 with a connecting element 3.
- the connecting element 3 carries (see Fig. 6 and 7 ) in an adjustable position in each case an axle carrier 8, which is designed for mounting a rear axle 9 in different positions.
- an axle carrier 8 which is designed for mounting a rear axle 9 in different positions.
- the connecting element 3 is fixedly coupled to a backrest 5, whereby it can also be mounted in different positions relative to the connecting element in order to be able to adjust the inclination of the backrest strut 5 (see in particular FIG Fig. 6 and 7 ).
- the connecting element 3 is pivotally connected to the seat stay 6.
- the entire wheelchair is constructed symmetrically, so that in each case the same parts on both sides, for example, the rear wheel 4, the connecting element 3, the backrest strut 5 and the seat stay 6 are provided.
- a locking device 10 is disposed on the inside of the side part of the chassis frame (on the top tube 12). This is cylindrical and comprises a spring-biased pin, not shown in detail, each extending into a recess 23 of the connecting element 3. This makes it possible to lock or fix the connecting element 3 relative to the upper tube 12 either in the position of use or in the folded position.
- the two bolts of the locking devices 10 are connected via a common pull cable 11 (see for example Fig. 3 ), connected. By pulling on the pull cable 11 thus the two locking bolts are released, so that a pivoting of the four-bar mechanism can be done.
- the connecting element 3 is fixedly coupled to a backrest, whereby this is mounted relative to the connecting element in different positions in order to adjust the inclination of the backrest strut 5 (see in particular Fig. 6 and 7 ).
- the connecting element 3 is pivotally connected to the seat stay 6.
- the entire wheelchair is constructed symmetrically, so that in each case the same parts on both sides, for example, the rear wheel 4, the connecting element 3, the backrest strut 5 and the seat stay 6 are provided.
- a locking device 10 is disposed on the inside of the side part of the chassis frame (on the top tube 12). This is cylindrical and includes a not shown in detail
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Handcart (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Description
Die Erfindung betrifft einen Rollstuhl, insbesondere einen Rollstuhl mit einem starren Rahmen.The invention relates to a wheelchair, in particular a wheelchair with a rigid frame.
Aus dem Stand der Technik ist es bekannt, Faltrollstühle zu bauen, bei welchen zum Zusammenlegen des Rollstuhls von einer Gebrauchsstellung in eine Faltstellung die Seitenrahmen aneinander angenähert werden. Somit kann die Breite des Rollstuhls erheblich reduziert werden. Dies ergibt ein geringeres Volumen im gefalteten Zustand.From the prior art it is known to build folding wheelchairs, in which for folding the wheelchair from a use position into a folded position, the side frames are approached to each other. Thus, the width of the wheelchair can be significantly reduced. This results in a smaller volume in the folded state.
Bei Starrrahmenrollstühlen ist es bekannt, die Rückenlehne zu klappen oder zu demontieren. Weiterhin können die großen Hinterräder abgenommen werden, um das Gesamtvolumen zu reduzieren. Derartige Rollstühle weisen jedoch auch in der Faltstellung ein nicht unerhebliches Volumen auf.In rigid frame wheelchairs, it is known to fold or dismantle the backrest. Furthermore, the large rear wheels can be removed to reduce the overall volume. However, such wheelchairs have a not inconsiderable volume even in the folded position.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, einen Rollstuhl der eingangs genannten Art zu schaffen, welcher bei einfachem Aufbau und einfacher, kostengünstiger Herstellbarkeit die Nachteile des Standes der Technik vermeidet und im zusammengefalteten Zustand ein geringes Packvolumen aufweist.The invention has for its object to provide a wheelchair of the type mentioned, which avoids the disadvantages of the prior art with a simple structure and simple, cost-effective manufacturability and in the folded state has a low packing volume.
Erfindungsgemäß wird die Aufgabe durch die Merkmalskombination des Hauptanspruchs gelöst, die Unteransprüche zeigen weitere vorteilhafte Ausgestaltungen der Erfindung.According to the invention the object is achieved by the feature combination of the main claim, the subclaims show further advantageous embodiments of the invention.
Erfindungsgemäß ist somit vorgesehen, dass der Rollstuhl einen starren Fahrwerksrahmen aufweist, an welchem lenkbare Vorderräder gelagert sind. Diese sind bevorzugterweise in unterschiedlichen Positionen befestigbar, um auf diese Weise die Neigung des Fahrwerksrahmens oder die Sitzhöhe einstellen zu können.According to the invention it is thus provided that the wheelchair has a rigid chassis frame, on which steerable front wheels are mounted. These are preferably fastened in different positions in order to adjust the inclination of the chassis frame or the seat height in this way.
Erfindungsgemäß ist vorgesehen, dass an dem rückseitigen Endbereich des Fahrwerksrahmens seitlich jeweils ein Verbindungselement schwenkbar gelagert ist, welches ein Hinterrad lagert und eine Rückenlehnenstrebe trägt und eine Sitzstrebe lagert. Erfindungsgemäß bildet das Verbindungselement mit dem Fahrwerksrahmen, mit der Sitzstrebe sowie mit einem am vorderen Bereich der Sitzstrebe und am Fahrwerksrahmen drehbar gelagerten Stützelement einen Viergelenkmechanismus.According to the invention it is provided that on the rear end portion of the chassis frame each side a connecting element is pivotally mounted, which supports a rear wheel and carries a backrest strut and a seat stay supports. According to the invention, the connecting element with the chassis frame, with the seat stay as well as with a at the front area of the seat stay and the chassis frame rotatably mounted support element a four-bar mechanism.
Die erfindungsgemäße Konstruktion zeichnet sich durch den erheblichen Vorteil aus, dass bei einer Verschwenkung des Verbindungselements nicht nur die Rückenlehnenstrebe mitverschwenkt wird, sondern bedingt durch den Viergelenkmechanismus, auch die Sitzstrebe mitgeschwenkt wird. Dies führt in einem einzigen Verschwenk-Vorgang zu einem Auflegen der Rückenlehnenstrebe und damit der Rückenlehne auf die Sitzstrebe und damit die Sitzfläche, sowie auf eine Annäherung dieser beiden an den Fahrwerksrahmen. Hierdurch lässt sich die Gesamthöhe in der Faltstellung ganz erheblich reduzieren.The construction according to the invention is characterized by the considerable advantage that not only the backrest strut is mitverschwenkt at a pivoting of the connecting element, but also caused by the four-bar mechanism, and the seat stay is swung. This leads in a single pivoting operation to a laying of the backrest strut and thus the backrest on the seat stay and thus the seat, as well as on an approximation of these two to the chassis frame. As a result, the overall height in the folded position can be significantly reduced.
Ein weiterer Vorteil der erfindungsgemäßen Ausgestaltung liegt darin, dass lediglich ein einziger Handgriff erforderlich ist, um den Rollstuhl von der Gebrauchsstellung in die Faltstellung und umgekehrt zu bringen. Fehlbedienungen können somit gänzlich ausgeschlossen werden.Another advantage of the embodiment of the invention is that only a single handle is required to bring the wheelchair from the use position to the folding position and vice versa. Operating errors can thus be completely excluded.
In besonders günstiger Ausgestaltung der Erfindung ist vorgesehen, dass die beiden seitlichen Verbindungselemente jeweils einen Achsträger lagern, an welchem eine durchgehende Hinterachse befestigt ist, welche an ihren beiden Enden jeweils die beiden Hinterräder lösbar trägt. Die Hinterachse bildet somit ein Konstruktionselement, welches auch auf die Gesamtsteifigkeit des Rollstuhlrahmens einen Einfluss hat und dient zusätzlich als Tragegriff in der Faltstellung.In a particularly favorable embodiment of the invention it is provided that the two lateral connecting elements each store an axle, to which a continuous rear axle is attached, which carries at its two ends in each case the two rear wheels releasably. The rear axle thus forms a structural element, which also has an influence on the overall rigidity of the wheelchair frame and additionally serves as a carrying handle in the folded position.
Durch die erfindungsgemäße Konstruktion ist es möglich, die Rückenlehnenstrebe von einer im Wesentlichen vertikalen Gebrauchsstellung in eine im Wesentlichen horizontale Faltstellung (bezogen auf die Position des Fahrwerksrahmens in der Gebrauchsstellung) zu verschwenken. Dabei wird die Rückenlehnenstrebe bevorzugterweise im Wesentlichen parallel zu der Sitzstrebe gebracht. Die Sitzstrebe wiederum wird bevorzugterweise von einer Winkelstellung gegenüber der horizontalen Stellung, welche sie in der Gebrauchsstellung einnimmt, so verschwenkt, dass sie im Wesentlichen parallel zu oberen Elementen des Fahrwerkrahmens zu liegen kommt. Dies führt zu der bereits erwähnten erheblichen Reduzierung des Volumens in der Faltstellung.Due to the construction according to the invention, it is possible to pivot the seat back strut from a substantially vertical position of use to a substantially horizontal folded position (relative to the position of the chassis frame in the position of use). In this case, the backrest strut is preferably brought substantially parallel to the seatstay. The seat strut, in turn, is preferably pivoted from an angular position relative to the horizontal position which it occupies in the position of use, so that it comes to lie substantially parallel to upper elements of the chassis frame. This leads to the already mentioned significant reduction of the volume in the folded position.
Erfindungsgemäß weist der Rollstuhl in bevorzugter Weiterbildung eine Verriegelungsvorrichtung auf, welche den Rollstuhl sowohl in der Gebrauchsstellung als auch in der Faltstellung verriegelt. In der Gebrauchsstellung ist somit ausgeschlossen, dass der Rollstuhl sich ungewollt verstellt oder zusammenlegt. In der Faltstellung wird der Rollstuhl ebenfalls zuverlässig fixiert und kann somit leicht und einfach gehandhabt und getragen werden. Die Verriegelungsvorrichtung ist bevorzugterweise so ausgebildet, dass sie an dem Fahrwerksrahmen angebracht ist und die Schwenkbewegung des Verbindungselements blockiert, und zwar sowohl in der Gebrauchsstellung als auch in der Faltstellung. Dabei ist es besonders günstig, wenn die Verriegelungsvorrichtung mit einem Zugseil oder Ähnlichem bedient werden kann. Hierdurch wird die Bedienung einfacher, zum anderen ergibt sich ein sehr geringes Gesamtgewicht.According to the invention, the wheelchair in a preferred development on a locking device which locks the wheelchair both in the position of use and in the folded position. In the use position is thus excluded that the wheelchair is unintentionally adjusted or collapses. In the folded position, the wheelchair is also reliably fixed and can therefore be easily and simply handled and worn. The locking device is preferably designed so that it is mounted on the chassis frame and blocks the pivotal movement of the connecting element, both in the position of use and in the folded position. It is particularly advantageous if the locking device can be operated with a pull rope or the like. This makes the operation easier, on the other hand results in a very low overall weight.
Um die vordere Sitzhöhe, die hintere Sitzhöhe, die Sitzneigung sowie die Verstellung der Hinterräder/Antriebsräder in horizontaler und/oder vertikaler Richtung zu ermöglichen, ist es besonders vorteilhaft, wenn die Hinterachse an den Achsträgern in unterschiedlichen Positionen befestigbar ist. Durch einfache mechanische Maßnahmen kann somit eine Anpassung des Rollstuhls an den jeweiligen Benutzer vorgenommen werden. Auch diese Maßnahmen sind einfach und kostengünstig durchführbar und führen lediglich zu einem geringen Gesamtgewicht des erfindungsgemäßen Rollstuhls.In order to enable the front seat height, the rear seat height, the seat tilt and the adjustment of the rear wheels / drive wheels in the horizontal and / or vertical direction, it is particularly advantageous if the rear axle can be fastened to the axle beams in different positions. Simple mechanical measures can thus be used to adapt the wheelchair to the respective user. These measures are simple and inexpensive to carry out and only lead to a low total weight of the wheelchair according to the invention.
Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:
- Fig. 1
- eine perspektivische Ansicht des erfindungsgemäßen Rollstuhls in Gebrauchsstellung von links vorne;
- Fig. 2
- eine perspektivische Ansicht, analog von
Fig. 1 , von rechts hinten; - Fig. 3
- eine Vorderansicht,
- Fig. 4
- eine Teilansicht des erfindungsgemäßen Fahrwerksrahmens sowie des Viergelenkmechanismus in Gebrauchsstellung;
- Fig. 5
- eine perspektivische Ansicht, analog
Fig. 4 , in der Faltstellung; - Fig. 6
- eine Seitenansicht, analog
Fig. 4 in der Gebrauchsstellung; und - Fig. 7
- eine Seitenansicht, analog
Fig. 5 , in der Faltstellung.
- Fig. 1
- a perspective view of the wheelchair according to the invention in the use position from the left front;
- Fig. 2
- a perspective view, analogous to
Fig. 1 , from the right behind; - Fig. 3
- a front view,
- Fig. 4
- a partial view of the chassis frame according to the invention and the four-bar mechanism in the position of use;
- Fig. 5
- a perspective view, analog
Fig. 4 in the folded position; - Fig. 6
- a side view, analog
Fig. 4 in the position of use; and - Fig. 7
- a side view, analog
Fig. 5 , in the folding position.
Der erfindungsgemäße Rollstuhl umfasst einen Fahrwerksrahmen 1, welcher ein Oberrohr 12 sowie ein Unterrohr 13 umfasst, welche fest miteinander verbunden sind und eine parallelogrammartige Seitenstruktur bilden (siehe beispielsweise
Die beiden Seitenteile des Fahrwerksrahmens 1, welche aus dem Oberrohr 12 und dem Unterrohr 13 gebildet sind, sind mittels einer Querstrebe 15 miteinander verbunden. Diese ist um eine erste Querachse 16 verschwenkbar und mit Streben 17 verbunden, welche sich senkrecht zur Querstrebe 15 erstrecken. Die freien Enden der Streben 17 wiederum sind mit einem Querrohr 19 verbunden, welches eine zweite Querachse 18 bildet, so dass das Querrohr 19 um die zweite Querachse 18 relativ zu einer Sitzquerstrebe 20 verschwenkbar ist. Diese wiederum ist mit einer Sitzstrebe 6 verbunden. Die Querstrebe 15, die Streben 17 sowie das Querrohr 19 bilden ein Stützelement 7, welches Teil eines Viergelenkmechanismus ist.The two side parts of the chassis frame 1, which are formed from the
Der hintere Endbereich des Fahrwerksrahmens 1, insbesondere des Oberrohrs 12, ist gelenkig zur Bildung einer dritten Querachse 21 mit einem Verbindungselement 3 verbunden.The rear end region of the chassis frame 1, in particular of the
Das Verbindungselement 3 trägt (siehe
Das Verbindungselement 3 ist fest mit einer Rückenlehne 5 gekoppelt, wobei auch diese relativ zu dem Verbindungselement in unterschiedlichen Positionen montierbar ist, um die Neigung der Rückenlehnenstrebe 5 einstellen zu können (siehe insbesondere
Zur Ausbildung einer vierten Querachse 22 ist das Verbindungselement 3 schwenkbar mit der Sitzstrebe 6 verbunden.To form a fourth
Es versteht sich, dass der gesamte Rollstuhl symmetrisch aufgebaut ist, so dass jeweils beidseitig gleiche Teile, beispielsweise das Hinterrad 4, das Verbindungselement 3, die Rückenlehnenstrebe 5 und die Sitzstrebe 6 vorgesehen sind.It is understood that the entire wheelchair is constructed symmetrically, so that in each case the same parts on both sides, for example, the
Es wird erfindungsgemäß somit ein Viergelenkmechanismus gebildet. Durch Verschwenken der Rückenlehnenstrebe 4, welche fest an dem Verbindungselement 3 gelagert ist, wird das Verbindungselement 3 um die dritte Querachse 21 relativ zu dem Fahrwerksrahmen 1 verschwenkt. Dies führt automatisch zu einer Schwenkbewegung der Sitzstrebe 6, um die zweite Querachse 18 sowie zu einer Verschwenkung des Stützelements 7 relativ zu der ersten Querachse 16.It is thus formed according to the invention, a four-bar mechanism. By pivoting the
Um eine Fixierung in der jeweiligen Gebrauchsstellung bzw. Faltstellung zu gewährleisten, ist innenliegend an dem Seitenteil des Fahrwerksrahmens (an dem Oberrohr 12) eine Verriegelungsvorrichtung 10 angeordnet. Diese ist zylindrisch ausgebildet und umfasst einen im Einzelnen nicht gezeigten federvorgespannten Bolzen, der sich jeweils in eine Ausnehmung 23 des Verbindungselements 3 erstreckt. Hierdurch ist es möglich, das Verbindungselement 3 relativ zu dem Oberrohr 12 entweder in der Gebrauchsstellung oder in der Faltstellung zu verriegeln bzw. zu fixieren. Die beiden Bolzen der Verriegelungsvorrichtungen 10 sind über ein gemeinsames Zugseil 11 (siehe beispielsweise
Lagerung einer Hinterachse 9 in unterschiedlichen Positionen ausgebildet ist. Somit ist es möglich, Hinterräder 4 an unterschiedlichen Positionen zu montieren, um Sitzhöhe, Sitzneigung oder Ähnliches einzustellen.Storage of a
Das Verbindungselement 3 ist fest mit einer Rückenlehne gekoppelt, wobei auch diese relativ zu dem Verbindungselement in unterschiedlichen Positionen montierbar ist, um die Neigung der Rückenlehnenstrebe 5 einstellen zu können (siehe insbesondere
Zur Ausbildung einer vierten Querachse 22 ist das Verbindungselement 3 schwenkbar mit der Sitzstrebe 6 verbunden.To form a fourth
Es versteht sich, dass der gesamte Rollstuhl symmetrisch aufgebaut ist, so dass jeweils beidseitig gleiche Teile, beispielsweise das Hinterrad 4, das Verbindungselement 3, die Rückenlehnenstrebe 5 und die Sitzstrebe 6 vorgesehen sind.It is understood that the entire wheelchair is constructed symmetrically, so that in each case the same parts on both sides, for example, the
Es wird erfindungsgemäß somit ein Viergelenkmechanismus gebildet. Durch Verschwenken der Rückenlehnenstrebe 5, welche fest an dem Verbindungselement 3 gelagert ist, wird das Verbindungselement 3 um die dritte Querachse 21 relativ zu dem Fahrwerksrahmen 1 verschwenkt. Dies führt automatisch zu einer Schwenkbewegung der Sitzstrebe 6, um die zweite Querachse 18 sowie zu einer Verschwenkung des Stützelements 7 relativ zu der ersten Querachse 16.It is thus formed according to the invention, a four-bar mechanism. By pivoting the
Um eine Fixierung in der jeweiligen Gebrauchsstellung bzw. Faltstellung zu gewährleisten, ist innenliegend an dem Seitenteil des Fahrwerksrahmens (an dem Oberrohr 12) eine Verriegelungsvorrichtung 10 angeordnet. Diese ist zylindrisch ausgebildet und umfasst einen im Einzelnen nicht gezeigtenIn order to ensure a fixation in the respective position of use or folding position, a
Claims (10)
- Rigid frame wheelchair having a rigid chassis frame (1) and steerable front wheels (2) are mounted on said chassis frame, wherein on the rear-side end region of the chassis frame (1) in each case a connecting element (3) is mounted on the side of the chassis frame in such a manner that said connecting element can pivot, said connecting element supporting a rear wheel (4), a backrest brace (5) and also a seat brace (6) in such a manner that said seat brace can pivot, wherein the connecting element (3) together with the chassis frame (1), the seat brace (6) and a supporting element (7) that is in each case mounted in a rotatable manner on the front region of the seat brace (6) and on the chassis frame (1) form a four-linkage mechanism, characterized in that the backrest brace (5) is mounted on the connecting element (3) in a fixed manner.
- Wheelchair according to Claim 1, characterized in that the connecting element (3) supports an axle carrier (8) in an adjustable manner and a rear axle (9) is fastened to said axle carrier, said rear axle carrying the two rear wheels (4).
- Wheelchair according to Claim 1 or 2, characterized in that the connecting element (3) can pivot by approximately 90° from a use position into a folded position relative to the chassis frame (1)
- Wheelchair according to any one of the claims 1 to 3, characterized in that the backrest brace (5) can be pivoted in the essentially vertical use position into an essentially horizontal folded position.
- Wheelchair according to any one of the claims 1 to 4, characterized in that the backrest brace (5) can be brought from an essentially vertical use position to a position that is essentially parallel with respect to the seat brace (6).
- Wheelchair according to any one of the claims 1 to 5, characterized in that the seat brace (6) can be brought from an angular position into a position that is essentially parallel with respect to the chassis frame (1).
- Wheelchair according to any one of the claims 1 to 6, characterized in that the chassis frame (1) is provided with an interlocking mechanism (10) that can be latched to the connecting element (3) in a detachable manner.
- Wheelchair according to Claim 7, characterized in that the interlocking mechanism (10) is connected to the pull rope (11) for detaching purposes.
- Wheelchair according to Claim 8, characterized in that the rear axle (9) can be fastened to axle carriers (8) in different positions.
- Wheelchair according to any one of the claims 1 to 9, characterized in that the front wheels (2) can be fastened in different positions on the vehicle chassis (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008017132A DE102008017132B3 (en) | 2008-04-03 | 2008-04-03 | Rigid framework wheelchair, has connecting element comprising chassis framework, seat support rod and supporting element, and rotatably mounted at front region of seat support rod and at chassis framework that forms four-hinge mechanism |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2106777A2 EP2106777A2 (en) | 2009-10-07 |
EP2106777A3 EP2106777A3 (en) | 2010-05-26 |
EP2106777B1 true EP2106777B1 (en) | 2016-10-12 |
Family
ID=40561051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09001451.5A Not-in-force EP2106777B1 (en) | 2008-04-03 | 2009-02-03 | Wheelchair |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2106777B1 (en) |
DE (1) | DE102008017132B3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2948559A1 (en) * | 2009-08-03 | 2011-02-04 | Raynald Riu | Foldable wheelchair for use by person with reduced mobility in sports field, has rear wheels mounted on chair structure in removable manner, and seat including backrest folded against base |
DE102010046442A1 (en) | 2010-09-24 | 2012-03-29 | Lutz Kadereit | Folding wheelchair |
WO2013056278A2 (en) * | 2011-10-12 | 2013-04-18 | Whelan Kevin | Wheel chair |
CN103267098B (en) * | 2013-05-16 | 2015-07-29 | 北京空间飞行器总体设计部 | A kind of hinge of quadratic crank mechanism locking |
DE102016109755A1 (en) | 2016-05-26 | 2017-11-30 | Otto Bock Mobility Solutions Gmbh | mobility aid |
RU208611U1 (en) * | 2021-10-19 | 2021-12-28 | Общество с ограниченной ответственностью "Ишимбайский машиностроительный завод" | Folding wheelchair |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4721321A (en) * | 1982-11-16 | 1988-01-26 | Invacare Corporation | Wheelchair with adjustable rear canes |
NL9301970A (en) * | 1993-11-15 | 1995-06-01 | Hendrik Jan Ordelman | Foldable wheelchair. |
US5593173A (en) * | 1994-11-08 | 1997-01-14 | Quickie Designs Inc. | Vertical folding wheelchair frame |
FR2740676B3 (en) * | 1995-11-08 | 1998-01-09 | Rousseau Jean Pierre | FOLDABLE WHEELCHAIR FOR USE IN THE MARINE ENVIRONMENT |
US7455362B2 (en) * | 2005-07-14 | 2008-11-25 | Kids Up, Inc. | Adjustable motion wheel chair |
-
2008
- 2008-04-03 DE DE102008017132A patent/DE102008017132B3/en not_active Expired - Fee Related
-
2009
- 2009-02-03 EP EP09001451.5A patent/EP2106777B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2106777A3 (en) | 2010-05-26 |
EP2106777A2 (en) | 2009-10-07 |
DE102008017132B3 (en) | 2009-05-20 |
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