DE3707087A1 - Bicycle-related propulsion component for wheelchairs - Google Patents

Bicycle-related propulsion component for wheelchairs

Info

Publication number
DE3707087A1
DE3707087A1 DE19873707087 DE3707087A DE3707087A1 DE 3707087 A1 DE3707087 A1 DE 3707087A1 DE 19873707087 DE19873707087 DE 19873707087 DE 3707087 A DE3707087 A DE 3707087A DE 3707087 A1 DE3707087 A1 DE 3707087A1
Authority
DE
Germany
Prior art keywords
drive part
part according
wheelchair
wheelchairs
bottom bracket
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.)
Withdrawn
Application number
DE19873707087
Other languages
German (de)
Inventor
Helmut Prof Dr Reichmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19873707087 priority Critical patent/DE3707087A1/en
Publication of DE3707087A1 publication Critical patent/DE3707087A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K7/00Freight- or passenger-carrying cycles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/003Wheelchairs attached to a cycle steerable by an attendant

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

The invention concerns the arrangement of the pedal crank bearing of muscle-powered propulsion components for wheelchairs. In order to permit a particularly short construction, ergonomically favourable posture for push-pedalling, and sufficient manoeuvrability despite a small angle of steering lock, it is proposed that the pedal drive be located forward, protruding into the area between the main wheels of the wheelchair. In this way, the driver's posture is improved substantially, and the propulsion component is small enough to fit into the boot of a medium-sized car together with the folding wheelchair without being disassembled further.

Description

Nach heutigem Stand der Technik können Rollstühle durch Muskel­ kraft-getriebene, Fahrrad-verwandte Antriebsteile bewegt wer­ den, die schiebend hinter dem Rollstuhl angeordnet sind. Um Steuerausschläge nicht zu behindern, wird der Tretkurbelantrieb hinter den Rollstuhlhaupträdern angeordnet. Zumindest dann, wenn die Konstruktion so ausgelegt ist, daß der Rollstuhl , auch wenn das Antriebsteil montiert ist, auf vier Rädern läuft, also nicht rückwärtig gekippt ist, ergeben sich ungünstige Verhältnisse für die Körperhaltung des Fahrers (= Betreuer). Die Rollstuhl­ griffe sind im Vergleich zum Fahrrad recht niedrig. Ihr hori­ zontaler Abstand zum Tretlager ist aber groß, so daß der Sattel steil über dem Tretlager angeordnet wird, um den Abstand Sattel - Roll­ stuhlgriffe nicht zu groß werden zu lassen. Eine solche Konstel­ lation ist, wie von Fahrrädern her bekannt, unbequem und er­ müdend. Da die steile Sitzposition einen hohen Sattel bedingt, wird die Höhendifferenz Sattel - Rollstuhlgriffe noch zusätz­ lich ungünstig beeinflußt, sofern man auf spezielle Lenkeran­ bauten am Rollstuhl verzichtet, die eine schnelle Verwandlung von Rollstuhl zu Rollstuhl-Fahrrad behindern würden.According to the current state of the art, wheelchairs can be moved by muscle-powered, bicycle-related drive parts who are sliding behind the wheelchair. In order not to hinder tax fluctuations, the pedal crank drive is arranged behind the main wheelchair wheels. At least if the construction is designed so that the wheelchair, even when the drive part is mounted, runs on four wheels, i.e. does not tilt backwards, this results in unfavorable conditions for the driver's posture (= supervisor). The wheelchair handles are quite low compared to the bike. Your horizontal distance to the bottom bracket is large, so that the saddle is placed steeply above the bottom bracket so that the distance between saddle and wheelchair handles does not become too large. Such a constellation is, as known from bicycles, uncomfortable and tiring. Since the steep seating position requires a high saddle, the height difference between saddle and wheelchair grips is also adversely affected, provided that special handlebar attachments on the wheelchair are dispensed with, which would hinder a quick change from wheelchair to wheelchair bicycle.

Die Baulänge des Antriebsteiles verursacht entsprechendes Ge­ wicht und macht es notwendig, das Antriebsteil seinerseits nochmals teilbar auszuführen, damit die Teile in den Koffer­ raum eines PKW passen.The overall length of the drive part causes corresponding Ge important and makes it necessary for the drive part in turn again divisible so that the parts in the case space of a car.

Der Erfindung liegen zwei Aufgaben zugrunde:The invention is based on two tasks:

Erstens sollte ein Muskelkraft-betreibbares Antriebsteil für Rollstühle so gestaltet werden, daß das auf fünf Rädern rollende Gesamtgefährt dem Fahrer eine ergonomisch befriedi­ gende Sitzposition ermöglicht, die ihm gestattet in kraftvollem Schiebetritt das Gefährt bequem zu fahren. Dies ist in Anbe­ tracht des hohen Fahrzeuggewichtes mit zwei Personen, von denen nur einer die Antriebsleistung erbringen muß, wesentlich.First, a muscle power-operable drive part for Wheelchairs are designed to be on five wheels the entire rolling vehicle provides the driver with ergonomic satisfaction suitable seating position, which allows him in powerful Sliding pedal to drive the vehicle comfortably. This is in Anbe costume of the high vehicle weight with two people, one of whom only one has to provide the drive power, essential.

Zweitens sollte das Antriebsteil so klein sein, daß es unzer­ legt zusammen mit einem handelsüblichen Faltrollstuhl im Koffer­ raum eines Mittelklasse-PKW Platz findet.Secondly, the drive part should be so small that it is not less puts in the case together with a standard folding wheelchair space for a mid-range car.

Diese Aufgaben werden erfindungsgemäß dadurch gelöst, daß der Tretkurbelantrieb weit nach vorne in den Bereich zwischen die Rollstuhlhaupträder ragend angeordnet wird. Hierdurch ergibt sich eine wesentlich kürzere Bauform mit entsprechend kurzem Radstand, der auch bei kleineren Lenkausschlägen ausreichende Wendigkeit gewährleistet. Durch Verwendung eines relativ klei­ nen Hinterrades (ca. 20 Zoll) und möglichst kurzem Abstand Hinterachse - Tretlager wird der Radstand zusätzlich verkürzt.According to the invention, these objects are achieved in that the pedal crank drive is arranged projecting far forward into the area between the main wheelchair wheels. This results in a significantly shorter design with a correspondingly short wheelbase, which ensures sufficient maneuverability even with smaller steering deflections. The wheelbase is also shortened by using a relatively small rear wheel (approx. 20 inches) and the shortest possible distance between the rear axle and the bottom bracket.

Die Anordnung des Tretkurbelantriebes weit vorne führt zu einer starken Neigung der Verbindungslinie Tretlager - Sattel. Diese wiederum ist Voraussetzung für den angestrebten ergonomischen Schiebetritt.The arrangement of the pedal crank drive far forward leads to a strong inclination of the connection line bottom bracket - saddle. This in turn is a prerequisite for the desired ergonomic sliding step.

Die vorgeschlagene Anordnung ermöglicht eine Sattelposition im vertikalen Bereich über der Hinterachse. Dadurch werden die Auf­ lagekräfte des Antriebteils am Rollstuhl gering gehalten. Dies wiederum schont die Anschlußmechanik und den Rollstuhl. The proposed arrangement enables a saddle position in the vertical area above the rear axle. This will make the up position forces of the drive part on the wheelchair kept low. This again protects the connection mechanism and the wheelchair.  

Die Neigung der Verbindungslinie Tretlager - Sattel kann kon­ struktiv sowohl durch ein entsprechend geneigtes Sattelrohr als auch bei steilerem Sattelrohr durch eine Sattelstütze mit nach hinten auskragendem, federndem Arm entsprechend P 34 45 309.1 erreicht werden.The inclination of the bottom bracket - saddle connection line can be achieved structurally both with an appropriately inclined seat tube and, in the case of a steeper seat tube, with a seat post with a resilient arm projecting to the rear in accordance with P 34 45 309.1.

Nach geringer Einübungszeit lassen sich mit dem recht kurzem Ge­ fährt auch besonders enge Kurven fahren. Hierzu wird bei ausrei­ chendem Schwung während eines größeren Lenkausschlages das kur­ veninnere Tretpedal hinten gehalten. Für ungeübte Fahrer hin­ gegen ist es ratsam, die Speichen auf den Innenseiten der Roll­ stuhlhaupträder mit handelsüblichen Schutzscheiben abzudecken, um zu verhindern, daß Pedal oder Fuß in die Speichen geraten können.After a short period of practice, the rather short Ge also drives particularly tight corners. For this, at ausrei cure swing during a large steering wheel deflection inner pedal pedal held at the rear. For inexperienced drivers against it is advisable to roll the spokes on the inside of the roll to cover main chair wheels with standard protective screens, to prevent the pedal or foot from getting caught in the spokes can.

Das abgekoppelte Antriebsteil erfindungsgemäßer Bauform ist nicht oder nur unwesentlich länger als ein Faltrollstuhl. Da es zudem bedeutend schmaler ist, läßt es sich problemlos mit dem Faltrollstuhl im Kofferraum eines Mittelklasse-PKW verstauen, ohne daß es weiter zerlegt werden braucht.The decoupled drive part is of the design according to the invention not or only slightly longer than a folding wheelchair. Because it is also significantly narrower, it can be easily with the Stow the wheelchair in the trunk of a mid-size car, without it having to be dismantled further.

Rollstuhl-Fahrrad-Kombinationen sollten grundsätzlich nur mit mäßiger Geschwindigkeit gefahren werden. Um das Fahrverhalten in Kurven zu verbessern, kann man konstruktiv dafür sorgen, daß sich Antriebsteil und Fahrer bei Lenkausschlägen zur Kurveninnen­ seite neigen (= in die Kurve legen). Dies wird erreicht, indem die Lenkkopfachse des Antriebteiles oben nach vorne geneigt an­ geordnet wird.Wheelchair-bike combinations should only be used be driven at moderate speed. To the driving behavior To improve in bends, you can constructively ensure that drive part and driver when steering deflections to the inside of the curve tilt the side (= lay in the curve). This is achieved by the steering head axis of the drive unit is inclined at the top towards the front is ordered.

Für die Verwendung des Antriebteiles an Rollstühlen verschie­ dener Baumuster, kann es sinnvoll sein, das Antriebteil zwischen Lenkkopf und Tretlager in seiner Länge verstellbar auszuführen.For use of the drive part on wheelchairs model, it can be useful to place the drive part between Steering head and bottom bracket adjustable in length.

Claims (8)

1. Durch Muskelkraft von einem "Betreuer" über Tretkurbel und Hinterrad betreibbares Antriebsteil für Rollstühle, dadurch gekennzeichnet, daß der Bewegungskreis des Tretkurbeltriebes zwischen die Rollstuhl-Haupträder ragt.1. By muscle power from a "supervisor" via pedal crank and rear wheel operable drive part for wheelchairs, characterized in that the circle of motion of the pedal crank mechanism protrudes between the wheelchair main wheels. 2. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß der Abstand Tretlager - Hinterach­ se kürzer ist als bei üblichen Fahrrädern gleicher Laufrad­ größe.2. Drive part according to at least one of claims 1-8, there characterized in that the distance between bottom bracket and Hinterach It is shorter than the same impeller on conventional bicycles size. 3. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß die Sitzposition des "Betreuers" im vertikalen Bereich über der Hinterradachse liegt.3. Drive part according to at least one of claims 1-8, there characterized in that the seating position of the "supervisor" is in the vertical area above the rear wheel axle. 4. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß die Lenkkopfachse oben nach vor­ ne geneigt ist.4. Drive part according to at least one of claims 1-8, there characterized in that the steering head axis upwards in front ne is inclined. 5. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß die Distanz Lenkkopf - Tretlager verstellbar ist.5. Drive part according to at least one of claims 1-8, there characterized in that the distance between the steering head and the bottom bracket is adjustable. 6. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß dieses zwischen Lenkkopf und Tretlager zerlegbar ist.6. Drive part according to at least one of claims 1-8, there characterized in that this between the steering head and Bottom bracket can be dismantled. 7. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß der Speichenbereich auf der Innen­ seite der Rollstuhl-Haupträder ganz oder teilweise abgedeckt ist.7. Drive part according to at least one of claims 1-8, there characterized in that the spoke area on the inside side of the wheelchair main wheels completely or partially covered is. 8. Antriebsteil nach mindestens einem der Ansprüche 1-8, da­ durch gekennzeichnet, daß die Sattelposition mittels eines federnden Armes der Sattelstütze nach hinten verlegt ist.8. Drive part according to at least one of claims 1-8, there characterized in that the saddle position by means of a resilient arm of the seat post is moved to the rear.
DE19873707087 1987-03-05 1987-03-05 Bicycle-related propulsion component for wheelchairs Withdrawn DE3707087A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873707087 DE3707087A1 (en) 1987-03-05 1987-03-05 Bicycle-related propulsion component for wheelchairs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873707087 DE3707087A1 (en) 1987-03-05 1987-03-05 Bicycle-related propulsion component for wheelchairs

Publications (1)

Publication Number Publication Date
DE3707087A1 true DE3707087A1 (en) 1988-09-15

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ID=6322347

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873707087 Withdrawn DE3707087A1 (en) 1987-03-05 1987-03-05 Bicycle-related propulsion component for wheelchairs

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DE (1) DE3707087A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228994A1 (en) * 1992-08-31 1994-03-03 Siegfried Schramm Load transport vehicle, in particular load transport bicycle
FR2767775A1 (en) * 1997-08-28 1999-03-05 Jdg Pedal cycle connected to infant push chair
DE19843609A1 (en) * 1998-09-23 2000-03-30 Michael Stams Wheelchair tandem, comprising of wheelchair in front and attached trailer equipped with pedals, operated by second person
FR2842487A1 (en) * 2002-07-22 2004-01-23 Paul Ducourret Accessory for attaching to pushchair, comprises wheel mounted frame with saddle to sit on
DE102011113851A1 (en) 2011-09-21 2013-03-21 Michael Sagemüller Bike trailer for transportation of wheelchair user to towing vehicle, has front and rear retention devices provided for releasable fastening of ends of foot struts and arranged in end regions of support tubes in driving direction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228994A1 (en) * 1992-08-31 1994-03-03 Siegfried Schramm Load transport vehicle, in particular load transport bicycle
FR2767775A1 (en) * 1997-08-28 1999-03-05 Jdg Pedal cycle connected to infant push chair
DE19843609A1 (en) * 1998-09-23 2000-03-30 Michael Stams Wheelchair tandem, comprising of wheelchair in front and attached trailer equipped with pedals, operated by second person
FR2842487A1 (en) * 2002-07-22 2004-01-23 Paul Ducourret Accessory for attaching to pushchair, comprises wheel mounted frame with saddle to sit on
DE102011113851A1 (en) 2011-09-21 2013-03-21 Michael Sagemüller Bike trailer for transportation of wheelchair user to towing vehicle, has front and rear retention devices provided for releasable fastening of ends of foot struts and arranged in end regions of support tubes in driving direction

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Legal Events

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8139 Disposal/non-payment of the annual fee