EP1321120A2 - Driving and braking device for wheelchair - Google Patents

Driving and braking device for wheelchair Download PDF

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Publication number
EP1321120A2
EP1321120A2 EP02026624A EP02026624A EP1321120A2 EP 1321120 A2 EP1321120 A2 EP 1321120A2 EP 02026624 A EP02026624 A EP 02026624A EP 02026624 A EP02026624 A EP 02026624A EP 1321120 A2 EP1321120 A2 EP 1321120A2
Authority
EP
European Patent Office
Prior art keywords
wheelchair
pinion
ring gear
rim
impeller
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.)
Granted
Application number
EP02026624A
Other languages
German (de)
French (fr)
Other versions
EP1321120B1 (en
EP1321120A3 (en
Inventor
Ulrich Alber
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.)
AAT Alber Antriebstechnik GmbH
Original Assignee
Alber Antriebstechnik GmbH
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 Alber Antriebstechnik GmbH filed Critical Alber Antriebstechnik GmbH
Publication of EP1321120A2 publication Critical patent/EP1321120A2/en
Publication of EP1321120A3 publication Critical patent/EP1321120A3/en
Application granted granted Critical
Publication of EP1321120B1 publication Critical patent/EP1321120B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/045—Rear wheel drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • 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
    • A61G5/1005—Wheelchairs having brakes
    • A61G5/1013—Wheelchairs having brakes engaging the wheel
    • A61G5/1016—Wheelchairs having brakes engaging the wheel on the rim

Definitions

  • the invention relates to a drive and brake assist device for wheelchairs, which can be fastened to the frame of a wheelchair is.
  • auxiliary devices facilitate pushing a person sitting in a wheelchair on slopes or on rough, difficult ground.
  • the pushing aids is also a support of braking at downhill Terrain possible.
  • the known sliding and braking aids have either a bepressbares to the ground and motor driven friction wheel or a hub drive for the wheels of the wheelchair.
  • the auxiliary devices With friction wheels have the disadvantage that the friction wheel with a relatively large contact pressure on the ground rest must be enough to be effective.
  • Hub drives are structurally complex and have an unfavorable transmission ratio, so usually a gear is required.
  • the present invention is based on the object, a Sliding and braking aid for wheelchairs to create a high performance with low effort, and which is easy to assemble and disassemble.
  • the task is with a drive and brake assist device for wheelchairs, which can be fastened to the frame of a wheelchair is solved, which is characterized according to the invention, that they have at least one motor driven in both directions Pinion, which is attached to the rim of an impeller the wheelchair attachable inner ring gear attacks.
  • the on the sprocket attacking pinion allows a large translation also without gear.
  • the device can be easily mounted and disassembled, with the inner ring gear on the impeller can remain.
  • each wheel can advantageously on each wheel an internal ring gear, with which a pinion is engageable, be fastened. Both pinions can be shared by a common Motor shaft to be driven.
  • the inner ring gear can be on its radially outer Side hooked in cross section, in the rim of the Impeller attachable, circumferential mounting portion exhibit.
  • This attachment portion preferably can be elastically deformable, can be easily in the Hook in the rim, if previously air from the tire of the wheel is drained. Then the tire is inflated again and thereby also the attachment portion with the rim braced.
  • the inner ring gear is so easily retrofitted to be attached to the wheel of a wheelchair. He can there remain even when the sliding and braking device is removed, because he is the normal hand drive of the wheelchair over a Handrim not obstructed.
  • the impeller 10 of a wheelchair not otherwise shown has, according to FIG. 1, a rim 11, an air-filled one Tire 12 and spokes 13 on.
  • a sliding and pushing Brake aid provided, of which an internal ring gear 14 and a pinion 15 are shown.
  • the inner ring gear 14 is attached to the rim 11.
  • the pinion 15 is from the shaft of a motor not shown here driven.
  • FIG. 2 illustrates, the internal ring gear 14 in his radially outer region a hook-shaped in cross-section Attachment section 14.1, which in the rim 11th is mounted.
  • At least the attachment portion 14.1 of Internal ring gear 14 consists of an elastically deformable Material, so that the attachment section 14.1 over the rim It is turnable when the air is let out of the tire 12 has been. Is then the tire 12 pumped up again, so is the attachment portion 14.1 between tire 12 and Rim 10 clamped.
  • the inner ring gear 14 can thus without Tool be attached to the impeller 10 of a wheelchair.
  • the Pinion 15 is driven by a shaft 16 which directly the Motor shaft can be. Of course it is, too possible, a gearbox and differential between engine and To provide pinion 15.
  • the pinion 15 can be in both Driving directions so that both support the Pushing the wheelchair as well as a support of braking the wheelchair with the device is possible.
  • the center distance for the toothing of pinion 15 and internal ring gear 14 is defined by a support roller 18 for which a bearing 17 is provided.

Abstract

The toothed strip (14) fits onto the side of the normal wheel rim (11), and the drive teeth face inwards. The teeth on the pinion (15) may consist of short cylindrical pegs on a disc, projecting toward the plane of the large wheel. The pinion may be connected to a motor or other drive mechanism and a brake.

Description

Die Erfindung betrifft eine Antriebs- und Bremshilfsvorrichtung für Rollstühle, die am Rahmen eines Rollstuhls befestigbar ist. Solche Hilfsvorrichtungen erleichtern das Schieben einer im Rollstuhl sitzenden Person an Steigungen oder auf rauem, schwer gängigem Untergrund. Bei einigen der Schiebehilfen ist auch eine Unterstützung des Bremsvorgangs bei abschüssigem Gelände möglich. Die bekannten Schiebe- und Bremshilfen weisen dabei entweder ein auf den Untergrund anpressbares und motorisch antreibbares Reibrad oder aber einen Nabenantrieb für die Laufräder des Rollstuhls auf. Die Hilfsvorichtungen mit Reibrädern haben dabei den Nachteil, dass das Reibrad mit einem relativ großen Anpressdruck auf dem Boden aufliegen muss, um ausreichend wirksam zu sein. Nabenantriebe sind konstruktiv aufwendig und haben ein ungünstiges Übersetzungsverhältnis, sodass in der Regel ein Getriebe erforderlich ist.The invention relates to a drive and brake assist device for wheelchairs, which can be fastened to the frame of a wheelchair is. Such auxiliary devices facilitate pushing a person sitting in a wheelchair on slopes or on rough, difficult ground. For some of the pushing aids is also a support of braking at downhill Terrain possible. The known sliding and braking aids have either a bepressbares to the ground and motor driven friction wheel or a hub drive for the wheels of the wheelchair. The auxiliary devices With friction wheels have the disadvantage that the friction wheel with a relatively large contact pressure on the ground rest must be enough to be effective. Hub drives are structurally complex and have an unfavorable transmission ratio, so usually a gear is required.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Schiebe- und Bremshilfe für Rollstühle zu schaffen, die eine hohe Leistungsfähigkeit bei geringem Kraftaufwand auszeichnet, und die leicht zu montieren und zu demontieren ist. The present invention is based on the object, a Sliding and braking aid for wheelchairs to create a high performance with low effort, and which is easy to assemble and disassemble.

Die Aufgabe wird mit einer Antriebs- und Bremshilfsvorrichtung für Rollstühle, die am Rahmen eines Rollstuhls befestigbar ist, gelöst, die erfindungsgemäß dadurch gekennzeichnet ist, dass sie mindestens ein motorisch in beide Richtungen antreibbares Ritzel aufweist, das an einem an der Felge eines Laufrades des Rollstuhls befestigbaren Innenzahnkranz angreift. Das am Zahnkranz angreifende Ritzel ermöglicht eine große Übersetzung auch ohne Getriebe. Die Vorrichtung kann leicht montiert und demontiert werden, wobei der Innenzahnkranz am Laufrad verbleiben kann.The task is with a drive and brake assist device for wheelchairs, which can be fastened to the frame of a wheelchair is solved, which is characterized according to the invention, that they have at least one motor driven in both directions Pinion, which is attached to the rim of an impeller the wheelchair attachable inner ring gear attacks. The on the sprocket attacking pinion allows a large translation also without gear. The device can be easily mounted and disassembled, with the inner ring gear on the impeller can remain.

Um möglichst gleichmäßige Antriebs- und Bremsbedingungen zu erhalten, kann vorteilhafterweise an jedem Laufrad ein Innenzahnkranz, mit dem ein Ritzel in Eingriff bringbar ist, befestigbar sein. Beide Ritzel können dabei von einer gemeinsamen Motorwelle angetrieben werden.To ensure the most uniform drive and braking conditions possible obtained, can advantageously on each wheel an internal ring gear, with which a pinion is engageable, be fastened. Both pinions can be shared by a common Motor shaft to be driven.

Der Innenzahnkranz kann auf seiner radial außen liegenden Seite einen im Querschnitt hakenförmigen, in die Felge des Laufrades einhängbaren, umlaufenden Befestigungsabschnitt aufweisen. Dieser Befestigungsabschnitt, der vorzugsweise elastisch verformbar sein kann, lässt sich einfach in die Felge einhängen, wenn zuvor Luft aus dem Reifen des Laufrades abgelassen wird. Anschließend wird der Reifen wieder aufgepumpt und dadurch auch der Befestigungsabschnitt mit der Felge verspannt. Der Innenzahnkranz ist also sehr leicht nachträglich am Laufrad eines Rollstuhls zu befestigen. Er kann dort auch bei abmontierter Schiebe- und Bremsvorrichtung verbleiben, da er den normalen Handantrieb des Rollstuhls über einen Greifring nicht behindert.The inner ring gear can be on its radially outer Side hooked in cross section, in the rim of the Impeller attachable, circumferential mounting portion exhibit. This attachment portion, preferably can be elastically deformable, can be easily in the Hook in the rim, if previously air from the tire of the wheel is drained. Then the tire is inflated again and thereby also the attachment portion with the rim braced. The inner ring gear is so easily retrofitted to be attached to the wheel of a wheelchair. He can there remain even when the sliding and braking device is removed, because he is the normal hand drive of the wheelchair over a Handrim not obstructed.

Aufgrund des günstigen Übersetzungsverhältnisses kann das Ritzel direkt von der Motorwelle angetrieben werden. Falls gewünscht oder erforderlich, kann selbstverständlich aber auch hier ein Getriebe und Differenzial zwischen Motor und Ritzel vorgesehen werden.Due to the favorable gear ratio, the Pinion driven directly from the motor shaft. if desired or required, but of course, too here a gearbox and differential between engine and pinion be provided.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Antriebs- und Bremshilfsvorrichtung anhand der Zeichnung näher beschrieben.Hereinafter, a preferred embodiment of a Drive and brake assist device according to the invention the drawing described in more detail.

Es zeigen:

Fig. 1
eine Seitenansicht auf das Laufrad eines Rollstuhls mit einer erfindungsgemäßen Antriebs- und Bremshilfsvorrichtung;
Fig. 2
eine vergrößerte Schnittdarstellung entlang der Linie II-II durch das Laufrad aus Fig. 1.
Show it:
Fig. 1
a side view of the wheel of a wheelchair with a drive and brake assist device according to the invention;
Fig. 2
an enlarged sectional view taken along the line II-II through the impeller of FIG. 1.

Das Laufrad 10 eines ansonsten nicht näher dargestellten Rollstuhls weist gemäß Fig. 1 eine Felge 11, einen luftbefüllten Reifen 12 sowie Speichen 13 auf. Zur motorischen Unterstützung einer den Rollstuhl schiebenden Person ist eine Schiebe- und Bremshilfsvorrichtung vorgesehen, von der ein Innenzahnkranz 14 sowie ein Ritzel 15 dargestellt sind. Der Innenzahnkranz 14 ist an der Felge 11 befestigt. Das Ritzel 15 wird von der Welle eines hier nicht dargestellten Motors angetrieben.The impeller 10 of a wheelchair not otherwise shown has, according to FIG. 1, a rim 11, an air-filled one Tire 12 and spokes 13 on. For motor support a person pushing the wheelchair is a sliding and pushing Brake aid provided, of which an internal ring gear 14 and a pinion 15 are shown. The inner ring gear 14 is attached to the rim 11. The pinion 15 is from the shaft of a motor not shown here driven.

Wie Fig. 2 verdeutlicht, weist der Innenzahnkranz 14 in seinem radial außen liegenden Bereich einen im Querschnitt hakenförmigen Befestigungsabschnitt 14.1 auf, der in die Felge 11 eingehängt ist. Mindestens der Befestigungsabschnitt 14.1 des Innenzahnkranzes 14 besteht aus einem elastisch verformbaren Material, sodass der Befestigungsabschnitt 14.1 über die Felge stülpbar ist, wenn aus dem Reifen 12 die Luft herausgelassen worden ist. Wird anschließend der Reifen 12 wieder aufgepumpt, so ist der Befestigungsabschnitt 14.1 zwischen Reifen 12 und Felge 10 eingespannt. Der Innenzahnkranz 14 kann somit ohne Werkzeug am Laufrad 10 eines Rollstuhls befestigt werden. Das Ritzel 15 wird von einer Welle 16 angetrieben, die direkt die Motorwelle sein kann. Selbstverständlich ist es jedoch auch möglich, ein Getriebe und Differenzial zwischen Motor und Ritzel 15 vorzusehen. Das Ritzel 15 lässt sich dabei in beide Richtungen antreiben, sodass sowohl eine Unterstützung des Schiebens des Rollstuhls als auch eine Unterstützung des Bremsens des Rollstuhls mit der Vorrichtung möglich ist. Der Achsabstand für die Verzahnung von Ritzel 15 und Innenzahnkranz 14 wird durch eine Stützrolle 18 definiert, für die eine Lagerstelle 17 vorgesehen ist.As Fig. 2 illustrates, the internal ring gear 14 in his radially outer region a hook-shaped in cross-section Attachment section 14.1, which in the rim 11th is mounted. At least the attachment portion 14.1 of Internal ring gear 14 consists of an elastically deformable Material, so that the attachment section 14.1 over the rim It is turnable when the air is let out of the tire 12 has been. Is then the tire 12 pumped up again, so is the attachment portion 14.1 between tire 12 and Rim 10 clamped. The inner ring gear 14 can thus without Tool be attached to the impeller 10 of a wheelchair. The Pinion 15 is driven by a shaft 16 which directly the Motor shaft can be. Of course it is, too possible, a gearbox and differential between engine and To provide pinion 15. The pinion 15 can be in both Driving directions so that both support the Pushing the wheelchair as well as a support of braking the wheelchair with the device is possible. The center distance for the toothing of pinion 15 and internal ring gear 14 is defined by a support roller 18 for which a bearing 17 is provided.

Claims (5)

Antriebs- und Bremshilfsvorrichtung für Rollstühle, die am Rahmen eines Rollstuhls befestigbar ist, dadurch gekennzeichnet, dass sie mindestens ein motorisch in beide Richtungen antreibbares Ritzel (15) aufweist, das an einem an der Felge (11) eines Laufrades (10) des Rollstuhls befestigbaren Innenzahnkranz (14) angreift.Drive and Bremshilfsvorrichtung for wheelchairs, which is attachable to the frame of a wheelchair, characterized in that it comprises at least one motor driven in both directions pinion (15), which can be attached to one of the rim (11) of an impeller (10) of the wheelchair Internal ring gear (14) attacks. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass an jedem Laufrad (10) ein Innenzahnkranz (14), mit dem ein Ritzel (15) in Eingriff bringbar ist, befestigbar ist.Apparatus according to claim 1, characterized in that on each impeller (10), an inner ring gear (14) with which a pinion (15) is engageable, can be fastened. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Innenzahnkranz (14) auf seiner radial außen liegenden Seite einen im Querschnitt hakenförmigen, in die Felge (11) des Laufrades (10) einhängbaren, umlaufenden Befestigungsabschnitt (14.1) aufweist.Apparatus according to claim 1 or 2, characterized in that the inner ring gear (14) has on its radially outer side a hook-shaped in cross-section, in the rim (11) of the impeller (10), circumferential mounting portion (14.1). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Befestigungsabschnitt (14.1) elastisch verformbar ist.Apparatus according to claim 3, characterized in that the fastening portion (14.1) is elastically deformable. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das mindestens eine Ritzel (15) von der Motorwelle direkt oder über ein Getriebe antreibbar ist.Device according to one of claims 1 to 4, characterized in that the at least one pinion (15) of the motor shaft is driven directly or via a transmission.
EP02026624A 2001-12-20 2002-11-29 Driving and braking device for wheelchair Expired - Lifetime EP1321120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20120619U 2001-12-20
DE20120619U DE20120619U1 (en) 2001-12-20 2001-12-20 Drive and brake assist device for wheelchairs

Publications (3)

Publication Number Publication Date
EP1321120A2 true EP1321120A2 (en) 2003-06-25
EP1321120A3 EP1321120A3 (en) 2003-11-05
EP1321120B1 EP1321120B1 (en) 2005-07-27

Family

ID=7965418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026624A Expired - Lifetime EP1321120B1 (en) 2001-12-20 2002-11-29 Driving and braking device for wheelchair

Country Status (6)

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US (1) US6827166B2 (en)
EP (1) EP1321120B1 (en)
JP (1) JP3831905B2 (en)
AT (1) ATE300270T1 (en)
DE (2) DE20120619U1 (en)
ES (1) ES2242817T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060124368A1 (en) * 2003-03-28 2006-06-15 Plishner Paul J Vehicle with a distributed motor
KR100995241B1 (en) * 2008-09-03 2010-11-23 정혜선 Wheel Chair Having Assistant Braking Device
DE102010008265B4 (en) * 2010-02-17 2013-05-02 Aat Alber Antriebstechnik Gmbh minicar
DE102011011385B4 (en) * 2011-02-17 2013-01-10 Aat Alber Antriebstechnik Gmbh wheelchair

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043554A (en) * 1979-02-02 1980-10-08 Biddle Eng Co Ltd Motorised wheelchairs
EP0430794A1 (en) * 1989-11-28 1991-06-05 Pierre José Soto Collapsible wheelchair and bag for transporting such a chair when collapsed
JPH07215261A (en) * 1994-02-03 1995-08-15 Araya Kogyo Kk Wheel
DE19748877A1 (en) * 1997-11-06 1999-05-12 Fritz Conzelmann Electric wheelchair drive with devices for climbing steps

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669619A (en) * 1995-08-22 1997-09-23 Kim; Il Yoo Portable wheelchair
US6148942A (en) * 1998-10-22 2000-11-21 Mackert, Sr.; James M. Infant stroller safely propelled by a DC electric motor having controlled acceleration and deceleration
US6494278B1 (en) * 2000-10-02 2002-12-17 Ervin Weisz Electric wheelchair drive system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043554A (en) * 1979-02-02 1980-10-08 Biddle Eng Co Ltd Motorised wheelchairs
EP0430794A1 (en) * 1989-11-28 1991-06-05 Pierre José Soto Collapsible wheelchair and bag for transporting such a chair when collapsed
JPH07215261A (en) * 1994-02-03 1995-08-15 Araya Kogyo Kk Wheel
DE19748877A1 (en) * 1997-11-06 1999-05-12 Fritz Conzelmann Electric wheelchair drive with devices for climbing steps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11, 26. Dezember 1995 (1995-12-26) & JP 07 215261 A (ARAYA KOGYO KK), 15. August 1995 (1995-08-15) *

Also Published As

Publication number Publication date
ES2242817T3 (en) 2005-11-16
ATE300270T1 (en) 2005-08-15
JP2003210530A (en) 2003-07-29
DE50203742D1 (en) 2005-09-01
DE20120619U1 (en) 2002-03-21
US20030116370A1 (en) 2003-06-26
JP3831905B2 (en) 2006-10-11
US6827166B2 (en) 2004-12-07
EP1321120B1 (en) 2005-07-27
EP1321120A3 (en) 2003-11-05

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