EP2428193B1 - Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur - Google Patents

Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur Download PDF

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Publication number
EP2428193B1
EP2428193B1 EP11192335.5A EP11192335A EP2428193B1 EP 2428193 B1 EP2428193 B1 EP 2428193B1 EP 11192335 A EP11192335 A EP 11192335A EP 2428193 B1 EP2428193 B1 EP 2428193B1
Authority
EP
European Patent Office
Prior art keywords
wheels
wheel
vehicle according
vehicle
ground
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
Application number
EP11192335.5A
Other languages
German (de)
English (en)
Other versions
EP2428193A3 (fr
EP2428193A2 (fr
Inventor
Kurt Hunziker
Thomas RÄBER
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.)
Levo AG Wohlen
Original Assignee
Levo AG Wohlen
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Filing date
Publication date
Application filed by Levo AG Wohlen filed Critical Levo AG Wohlen
Publication of EP2428193A2 publication Critical patent/EP2428193A2/fr
Publication of EP2428193A3 publication Critical patent/EP2428193A3/fr
Application granted granted Critical
Publication of EP2428193B1 publication Critical patent/EP2428193B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • 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
    • A61G5/14—Standing-up or sitting-down aids
    • 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
    • A61G5/043—Mid 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
    • A61G5/04—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
    • A61G5/042—Front wheel drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S180/00—Motor vehicles
    • Y10S180/907—Motorized wheelchairs

Definitions

  • the invention relates to a vehicle with Mittenradantrieb, in particular wheelchair or Aufrichtrollstuhl, with a chassis and arranged on the chassis seat device, wherein the chassis has a front part and a rear part, which are articulated to each other by means of a joint, and two separately motor-driven center gears, two front wheels and at least one rear wheel.
  • FIG. 1 shows the US 5,904,214 a mid-wheel drive wheelchair with two center wheels, two front wheels designed as swivel wheels, and a rear wheel.
  • the seat is located above the center wheels.
  • Each of the two center wheels is separately driven by a motor.
  • This has the advantage that the wheelchair can be turned in a small space, for example in an elevator car. To turn it in place, the wheelchair user operates the controller so that the two center wheels are rotated in opposite directions. The user and the wheelchair are turned around their own axis.
  • the front wheels must not hinder the turning. Therefore, the front wheels are designed as swivel wheels.
  • This wheelchair has the disadvantage that the front wheels must be designed as swivel wheels, so they do not hinder the turning. There is therefore little space for the footrest available.
  • a particular disadvantage is that with this wheelchair obstacles, if they exceed a certain amount, can not be overcome in slow speed.
  • WO 2005/051279 is a six-wheeled wheelchair has become known in which on each side of the chassis, a two-armed lever is articulated by means of a hinge. At each lever arm a wheel is arranged. The wheels of this pair of wheels are coupled together by a chain or a gear transmission and jointly driven by a motor. The arrangement of the two pairs of wheels and the rear wheels is chosen so that the weight of the chair user is approximately evenly distributed to the pairs of wheels and the rear wheels. In terms of function, these wheels are therefore front wheels. Thanks to the articulated arrangement of the two-armed lever on the chassis, both wheels of the wheel pairs always remain in contact with the ground, even on uneven terrain. This wheelchair does not have the benefits of before. described wheelchair with center drive on. A turn on the spot is not possible.
  • the wheelchair according to the US 2007/0152427 is not a wheelchair with Mittenradantrieb. He basically has four or eight articulated wheel units whose wheels are individually driven by a motor.
  • an electric wheelchair which has a frame, on which front two drive shafts are arranged, which are driven by electric motors. Each drive shaft drives via a transmission two front wheels arranged one behind the other. Next two rear wheels are provided.
  • the description explicitly refers to in-line arranged pairs of front wheels. There is thus no wheelchair with Mittenradantrieb before. The described wheelchair can thus not be turned in a narrow space by rotation of center wheels in opposite directions.
  • the GB 2 325 903 discloses a vehicle having a chassis comprising a front part and a rear part which are hinged together by means of a hinge. At the front of the front wheels and the center wheels are arranged, which are drivable by a four-wheel drive with one or more engines. On level ground, both the front and the rear wheels are in contact with the ground, which has the night part that turning in a confined space is not possible because the non-steerable front wheels prevent this. Also, it is virtually impossible to overcome an obstacle in forward drive without starting. Rather, reverse driving is expressly required to overcome the obstacle (page 7, lines 2ff.). To allow the overcoming of an obstacle, the rear wheels are arranged elevated. They are usually not in contact with the ground.
  • a sensor is provided, with which an actuator is controllable, which gives away the front part with respect to the rear part to raise by means of a lever system, an auxiliary wheel pair, so that it can easily climb over the obstacle.
  • the pivoting of the rear part also causes a lifting of the center wheels.
  • a roll-up wheelchair the user should be able to perform a rotation about its own axis, both in the sitting position and in the standing position.
  • a vehicle of the type mentioned is characterized in that the front wheels are separately driven by a motor and that drive means are provided, with which the front part of the chassis is adjustable with respect to the rear part to bring the center wheels out of contact with the ground.
  • the front wheels are not in contact with the ground. Therefore, they do not hinder the seated user of the vehicle from turning together with the vehicle about its own axis.
  • the invention also allows the standing user to perform a rotation about its own axis, because by means of said drive means, the front part of the chassis can be adjusted to bring the center wheels out of contact with the ground.
  • the front wheels are driven separately from each other, they can, as otherwise the center wheels, are driven in opposite directions, so that the standing user is rotated about its own axis. Since the center wheels are not in contact with the ground, they do not constitute an obstacle to such a rotation.
  • the construction of the vehicle according to the invention has the further advantage that it is relatively simple, but nevertheless ensures good driving characteristics. Unlike the wheelchair according to the GB 2 325 903 an obstacle can be overcome when driving forward. Due to the fact that the front wheels are normally not in contact with the ground, ie are arranged in an elevated position, they can easily overcome this when hitting an obstacle. Further, because the front wheels do not need to be designed as swivel wheels, there is plenty of room for the footrest available.
  • the wheelchair behaves like a vehicle with four-wheel drive, for example, on snow-covered roads. In fact, four wheels are driven. Although the rear wheel does not have a motorized drive, this does not adversely affect the handling because of the weight of the user in a vehicle with Mittenradantrieb relies mainly on the center wheels.
  • the front part forms a two-armed lever, wherein the middle wheels are arranged on one arm and the front wheels on the other arm.
  • Spring means for example a spring-joint element or a spring, may be provided to keep the front wheels normally out of contact with the ground. In this raised position, the front wheels facilitate overcoming obstacles.
  • an auxiliary wheel can be provided behind the center wheel.
  • a common motor drive usually an electric motor to provide.
  • the center wheel, the front wheel and possibly the auxiliary wheel can be in operative connection with each other by an endless chain, an endless toothed belt, a gear transmission, a cardan shaft or another device.
  • a user-operable motor for example a linear motor serve.
  • a connection for example a Bowden cable or a cable.
  • This coupling then causes the front part of the chassis to be lowered during a transition from the sitting position to the standing position, so that the front wheels come into contact with the ground and the center wheels are brought out of contact with the ground.
  • a connection for example a Bowden cable or a cable.
  • Fig. 1 shown vehicle is designed as a Trorichtrollstuhl.
  • This consists essentially of the wheels 13,15,17 having the chassis 11 and the seat device 19.
  • This is provided with a Aufrichtmechanismus, not shown, which allows the user to move out of the in the FIGS. 1 and 5 shown sitting position in the in the FIGS. 6 and 7 to be shown standing position.
  • the seating device is arranged so that in the sitting position the weight of the chair occupant rests essentially on the center wheels and in the standing position on the front wheels. Erecting mechanisms have been known for a long time.
  • a Aufrichtmaschine as described in the Swiss patent application no. 1132/07 is described.
  • the chassis 11 can also be combined with a usual for ordinary wheelchairs seat device.
  • the vehicle can also be designed for other purposes, for example as a golf cart.
  • the chassis 11 has a front part 21 and a rear part 23, which are connected by means of a hinge 25 hinged together.
  • the center wheels 13 are each by a motor 27 (only one is in Fig. 1 visible) can be separately driven by a motor.
  • the front wheels 15 are driven by a motor. This significantly improves the off-road capability of the vehicle. It is essential, however, that the drive of the front wheels 15 takes place separately from each other. Thus, when the front wheels 15 in the standing position of the user in opposite directions are rotated, the user is pivoted about its own axis. This makes it easier for the user to perform activities standing.
  • the front part 21 forms a two-armed lever.
  • the center wheels 13 and the other arm 31 the front wheels 15 are arranged.
  • spring means 33 for example a coil spring or a spring joint element
  • the two-armed lever 21 is biased against a preferably made of elastomeric material stop 35 on the rear part 23 to keep the front wheels 15 when driving on a flat roadway normally out of contact with the ground.
  • the front wheels 15 can come into contact with the road and participate in the braking process.
  • the two-armed lever 21 is cushioned by the spring 33, so that the user feels no shock.
  • Fig. 7 It can be seen that the footrest 48 can be generous dimensional, because the front wheels 15 are not designed as swivel wheels.
  • the motor 27 For driving the Mittenrads 13, the front wheel 15 and optionally an auxiliary wheel 43 of each side of the vehicle, the motor 27 is provided.
  • the center wheel 13 and the front wheel 15 are connected by an endless chain 45 with each other in operative connection.
  • endless toothed belts, gear drives, cardan shafts or other devices It would also be possible to use endless toothed belts, gear drives, cardan shafts or other devices.
  • Fig. 8 shows, two rear wheels 17 are advantageously arranged on a rocker 49, which are pivotable about a central pivot axis 51.
  • pivot axis 51 may serve a spring joint element, for example of the type ROSTA.

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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)
  • Handcart (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Claims (16)

  1. Véhicule comportant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticalisateur, comportant un châssis (11) et un dispositif d'assise (19) disposé sur le châssis (11), sachant que le châssis (11) présente une partie avant (21) et une partie arrière (23) reliées entre elles de manière articulée au moyen d'une articulation (25), ainsi que deux roues médianes (13) pouvant être entraînées de manière motorisée séparément l'une de l'autre, deux roues avant (15) et au moins une roue arrière (17), les roues avant pouvant être entraînées de manière motorisée séparément l'une de l'autre, et dans lequel des moyens d'entraînement (37, 37') sont prévus, lesquels permettent de déplacer la partie avant (21) du châssis (11) par rapport à la partie arrière (23) pour changer la distance entre les roues avant (15) et le sol, et dans lequel les roues avant (15) sont adaptées pour être maintenues hors de contact avec le sol, alors que les roues médianes (13) restent en contact avec le sol.
  2. Véhicule selon la revendication 1, dans lequel la partie avant (21) forme un levier à deux bras, les roues médianes (13) étant disposées sur un bras (29) et les roues avant (15) étant disposées sur l'autre bras (31).
  3. Véhicule selon la revendication 2, dans lequel des moyens à ressort (33), par exemple un élément articulé à ressort ou un ressort, sont prévus, lesquels précontraignent la partie avant (21) contre une butée (35) au niveau de la partie arrière (23), pour maintenir les roues avant (15) hors de contact avec le sol dans des conditions habituelles, alors que les roues médianes (13) restent en contact avec le sol.
  4. Véhicule selon l'une quelconque des revendications 1 à 3, dans lequel une roue auxiliaire (43) est prévue derrière la roue médiane (13).
  5. Véhicule selon l'une quelconque des revendications 1 à 4, dans lequel un dispositif d'entraînement motorisé commun (27) est prévu de chaque côté du véhicule pour la roue médiane (13), la roue avant (15) et éventuellement la roue auxiliaire (43).
  6. Véhicule selon la revendication 5, dans lequel la roue médiane (13), la roue avant (15) et éventuellement la roue auxiliaire (43) sont en liaison fonctionnelle entre elles par l'intermédiaire d'une chaîne sans fin (45), d'une courroie dentée sans fin, d'une transmission par engrenage, d'un arbre cardan ou d'un autre dispositif.
  7. Véhicule selon l'une quelconque des revendications 1 à 6, dans lequel la roue arrière (17) est avec suspension.
  8. Véhicule selon l'une quelconque des revendications 1 à 7, dans lequel deux roues arrière (17) sont prévues, et dans lequel les roues arrière (17) sont disposées sur une bascule (49) qui peut être pivotée autour d'un axe de pivotement (51) central.
  9. Véhicule selon la revendication 8, dans lequel un élément articulé à ressort sert d'axe de pivotement (51).
  10. Véhicule selon l'une quelconque des revendications 1 à 9, dans lequel un moteur (37', Fig. 2) pouvant être activé par l'utilisateur, par un exemple un moteur linéaire, sert de moyen d'entraînement servant à déplacer la partie avant.
  11. Véhicule selon l'une quelconque des revendications 1 à 9, dans lequel un mécanisme verticalisateur pour le dispositif d'assise (19) et des moyens sont prévus afin de déplacer le mécanisme verticalisateur d'une position assise dans une position debout et inversement, et dans lequel le dispositif d'assise (19) est couplé à la partie avant (21) du châssis (11) par un moyen d'assemblage (37) afin d'amener les roues avant (15) en contact avec le sol lors du passage de la position assise à la position debout.
  12. Véhicule selon la revendication 11, dans lequel une tige de traction (37) ou un câble de transmission sert de moyen d'assemblage, lequel relie le siège (41) avec le bras (29) du levier (21) à deux bras, supportant les roues médianes (13).
  13. Véhicule selon l'une quelconque des revendications 1 à 12, dans lequel les moyens d'entraînement (37, 37') sont prévus pour éloigner les roues médianes (13) du contact avec le sol et pour amener les roues avant (15) en contact avec le sol.
  14. Véhicule selon l'une quelconque des revendications 1 à 10 et 13, dans lequel le véhicule n'est pas de fauteuil roulant verticalisateur.
  15. Véhicule selon l'une des revendications 1 à 14, dans lequel le véhicule est un fauteuil roulant.
  16. Véhicule selon l'une des revendications 1 à 9 et 12 à 15, dans lequel les moyens d'entraînement (37, 37') sont un dispositif mécanique étant par exemple activé par un utilisateur.
EP11192335.5A 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur Not-in-force EP2428193B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01327/07A CH713464B1 (de) 2007-08-24 2007-08-24 Fahrzeug mit Mittenradantrieb, insbesondere Rollstuhl oder Aufrichtrollstuhl.
EP08714776A EP2114335B1 (fr) 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP08714776.5 Division 2008-03-20
EP08714776A Division EP2114335B1 (fr) 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur

Publications (3)

Publication Number Publication Date
EP2428193A2 EP2428193A2 (fr) 2012-03-14
EP2428193A3 EP2428193A3 (fr) 2012-07-18
EP2428193B1 true EP2428193B1 (fr) 2015-08-05

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP11192335.5A Not-in-force EP2428193B1 (fr) 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur
EP08714776A Active EP2114335B1 (fr) 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08714776A Active EP2114335B1 (fr) 2007-08-24 2008-03-20 Véhicule comprenant un entraînement de roue médiane, en particulier fauteuil roulant ou fauteuil roulant verticaliseur

Country Status (9)

Country Link
US (1) US8118321B2 (fr)
EP (2) EP2428193B1 (fr)
JP (1) JP5320397B2 (fr)
AU (1) AU2008291611B2 (fr)
CA (1) CA2693447C (fr)
CH (1) CH713464B1 (fr)
NZ (1) NZ582409A (fr)
TW (1) TWI407948B (fr)
WO (1) WO2009026731A1 (fr)

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Also Published As

Publication number Publication date
EP2428193A3 (fr) 2012-07-18
AU2008291611B2 (en) 2013-10-10
NZ582409A (en) 2012-01-12
CA2693447C (fr) 2014-08-12
EP2428193A2 (fr) 2012-03-14
US8118321B2 (en) 2012-02-21
WO2009026731A1 (fr) 2009-03-05
TWI407948B (zh) 2013-09-11
EP2114335A1 (fr) 2009-11-11
US20110215540A1 (en) 2011-09-08
TW200916083A (en) 2009-04-16
EP2114335B1 (fr) 2012-06-27
CH713464B1 (de) 2018-08-15
CA2693447A1 (fr) 2009-03-05
JP5320397B2 (ja) 2013-10-23
JP2010536512A (ja) 2010-12-02
AU2008291611A1 (en) 2009-03-05

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