EP3764967B1 - Rollstuhl - Google Patents

Rollstuhl Download PDF

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Publication number
EP3764967B1
EP3764967B1 EP19710767.5A EP19710767A EP3764967B1 EP 3764967 B1 EP3764967 B1 EP 3764967B1 EP 19710767 A EP19710767 A EP 19710767A EP 3764967 B1 EP3764967 B1 EP 3764967B1
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EP
European Patent Office
Prior art keywords
reverser
tube
fact
poles
motors
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Active
Application number
EP19710767.5A
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English (en)
French (fr)
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EP3764967A1 (de
Inventor
Jean-Pierre Aubert
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.)
Np Technologies Holding Sarl
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Np Technologies Holding Sarl
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Publication of EP3764967A1 publication Critical patent/EP3764967A1/de
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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
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/048—Power-assistance activated by pushing on hand rim or on handlebar
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/32—General characteristics of devices characterised by sensor means for force
    • 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
    • A61G5/1051—Arrangements for steering

Definitions

  • the present invention relates to wheelchairs which find a particularly advantageous application for moving severely disabled people, in particular with the help of a third person, and for helping the latter to move the chair.
  • Wheelchairs are already known which comprise controllable means for moving and driving them. These means, such as, for example, control devices known by the term “joysticks”, are available to the disabled person who can manipulate them himself, provided that he is physically and/or intellectually capable of doing so.
  • Such armchairs are for example described and illustrated in the US5778996 and US8132634 .
  • the disabled person can still move around, if only to walk around, for example, the wheelchair is driven by a third person. It is then also possible that the ground on which the wheelchair must be moved is not very rolling, or even that the third person is not strong enough to push the wheelchair, which limits the possibilities of movement of the wheelchair.
  • the purpose of the present invention is to produce a wheelchair which makes it possible to help a third person to move it and to drive it.
  • the object of the invention comprises "at least one" element having a given function
  • the embodiment described may comprise several of these elements.
  • the embodiment of the object according to the invention as illustrated comprises several elements of identical function and if, in the description, it is not specified that the object according to this invention must necessarily comprise a number particular of these elements, the object of the invention may be defined as comprising "at least one" of these elements.
  • the present invention relates to a wheelchair for a disabled person.
  • the wheelchair according to the invention comprises a carrier frame 10 with a seat 11 to receive a person, at least two wheels 21, 22, and means for mounting these two wheels 21, 22 in rotation relative to the frame 10 respectively in two substantially parallel planes.
  • These two wheels can be of any type, preferably pneumatic as illustrated in the figure 1 . But they could be, for example, of the caterpillar type or the like.
  • the chair further comprises an energy source 30 and two electric motors 23, 24 controllable from respective control inputs 25, 26 connected to the energy source 30, for example a rechargeable battery, these two electric motors being respectively coupled to the two wheels 21, 22 to drive them in rotation and being capable of being controlled in two directions of rotation.
  • the wheelchair further comprises two inverters of the electric type, known per se, 41, 42, each inverter having two connection positions and comprising a first part of inverter 101 and a second part of inverter 102, these two inverter parts being movable relative to each other.
  • These two inverters 41, 42 are interposed in series, figure 2 , between the energy source 30 and respectively the respective control inputs 25, 26 of the two electric motors 23, 24,
  • One of the two inverter parts 101 comprises two contact poles 43, 44 and the other inverter part 102 comprises a handle 45, the two inverter parts being capable of being controlled in movement by one to the other so that the handle can come, from a rest position (in which it is not in contact with one or the other of the two poles), in contact with one two poles 43, 44 or with each other.
  • Means 53 are also provided for fixedly mounting the first inverter part 101 of each inverter on the frame 10 via attachment means 12 schematically illustrated on the figure 1 and 4 , and means 50 for controlling the movement of the second inverter part 102 of each inverter relative to the first inverter part so as to bring the lever 45 into contact with one or the other of the two poles 43, 44.
  • the attachment means 53 mentioned above may consist of tabs, angles or the like and, as illustrated, hollow elbows 53-1, 53-2 forming an integral part of the frame 10 via the attachment means 12, as those illustrated on the figure 1 , 3 and 4 .
  • the means 50 for controlling the movement of the second inverter part 102 of each inverter 41, 42 relative to the first part 101 comprise a tube 51, on which an able-bodied person can act by pushing or traction, as will be explained below, means 53 for fixing this second inverter part 102 of each inverter 41, 42 to the tube 51, and means for mounting this tube in displacement relative to the first inverter part 101 of each inverter.
  • the tube 51 can be made of any material, preferably an electrically insulating material such as plastic, or even a metallic material, but taking care to provide, if necessary depending on the structure of the inverters, insulators between the tube and the inverters.
  • each inverter 41, 42 comprising a lever 45 and this lever being consisting of an elastic lamella
  • means 52-1, 52-2 are provided for fixing a first end of each lamella to the tube 51 so that the second end of the lamella is, in the rest position, i.e. that is to say when no force (manual or otherwise) is exerted on the tube 51 with respect to one of the two parts of the inverter, located between the two poles 43, 44 and without contact with them.
  • These means 52-1, 52-2 comprise a sleeve mounted to slide in a substantially congruent manner inside the tube, the sleeve comprising a slot in which the first end of the lamella 45 is fixed.
  • the tube 51 is arranged so that its two ends freely move around, at least partially if not completely, respectively the inverter part 101 of each inverter 41, 42, figure 4 .
  • the means for mounting the tube 51 in displacement relative to the first inverter part 101, of each inverter comprise elastic means able to act elastically directly or indirectly on the tube relative to the frame. in a direction perpendicular to the longitudinal axis of the tube 51.
  • These elastic means capable of acting along a perpendicular to the longitudinal axis of the tube 51 can be made in several ways, for example as illustrated by at least one annular seal 58 made of a material of very low elasticity, for example foam, interposed between the first part 101 of each inverter and the inner wall of the tube 51.
  • Such annular seals 58 made of an elastic material are therefore capable of being crushed in a diametrical direction by application of a force, in particular transmitted by the tube 51, and of returning to their initial state when this force is cancelled.
  • These seals can also constitute means for preventing impurities, dust or the like from penetrating into the inverters and/or the tube 51.
  • the elastic means capable of acting along a perpendicular to the longitudinal axis of the tube 51 are constituted by the lamella elastic 45 itself and means for securing the second end of the slat to the inverter part 101, which is fixed to the frame, comprising the two contact poles 43, 44 so that the slat portion between its first and second ends passes between these two poles 43, 44.
  • the means for securing the second end of the slat to the part of the inverter 101 concerned may consist of two lugs 103, 104 made of electrically insulating material and integral with this part of the inverter, which grip the second end of the lamella. This realization has not been specifically illustrated, but is relatively visible in the Lo magnifying part on the picture 3 .
  • the strip when no force is exerted on the tube, the strip is not subjected to any elastic deformation, it is in the rest position and is not in contact with one or the other of the two poles 43, 44.
  • the tube 51 consists of two half-tubes 51-1, 51-2 and means 60 for butting them together so as to substantially coaxial.
  • These means 60 are advantageously constituted by a box, the electronic motor control circuit then being at least partly housed in this box.
  • the means for connecting the energy source 30 to the two electric motors 23, 24, they are then constituted by wired connections via the electronic circuit, the wired connections passing inside the half-tubes 51-1, 51- 2.
  • the chair further comprises means 200 for determining the intensity of the force which is exerted on the slats to control the speed of rotation of the motors.
  • These means 200 comprise for example force sensors (or strain gauges), four in number, two per inverter, these sensors being able to output signals which are a function of the force which is exerted on the tube 51 and therefore on the slats, and an electronic control circuit which processes these signals to control the motors so as to modulate their speed of rotation according to the value of the intensity of the electrical signal delivered by the sensors.
  • force sensors or strain gauges
  • sensors being able to output signals which are a function of the force which is exerted on the tube 51 and therefore on the slats
  • an electronic control circuit which processes these signals to control the motors so as to modulate their speed of rotation according to the value of the intensity of the electrical signal delivered by the sensors.
  • Such an electronic control circuit is within the domain of those skilled in the art in the field of electronics and will therefore not be further defined here, still for the sole purpose of simplifying the present description.
  • the motors 23, 24 be brushless motors known per se and referred to by technicians under the term “brushless”.
  • These brushless motors themselves comprise control elements for rotating them in one direction or the other and elements for modulating their speed of rotation.
  • the wheelchair as described above can be used in the following way:
  • the able-bodied third person For the able-bodied third person to be able to easily control the chair, it suffices for him to exert pushes or pulls on the tube 51 in the plane of the direction which makes the reversers act, according to combinations of the four arrows A, BC and D ( figure 4 ) which schematically illustrate the four possible forces.
  • This practical wheelchair will allow people with disabilities, whether fully dependent or not, generalized accessibility without limitation or restriction to all areas of life: social life, education, schooling for young children and adolescents, adapted jobs, leisure and culture for adults.

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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)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (8)

  1. Rollstuhl, umfassend:
    - einen Tragrahmen (10) mit einem Sitz (11) für die Aufnahme einer Person,
    - mindestens zwei Räder (21, 22),
    - Mittel, um die beiden Räder (21, 22) jeweils in zwei im Wesentlichen parallelen Ebenen drehbar in Bezug auf den Rahmen (10) zu montieren,
    - eine Energiequelle (30),
    - zwei Elektromotoren (23, 24), die von jeweiligen Steuereingängen (25, 26), die mit der Energiequelle (30) verbunden sind, steuerbar sind, wobei die beiden Elektromotoren jeweils mit einem der beiden Räder (21, 22) gekoppelt sind, um sie rotatorisch anzutreiben, und in zwei Drehrichtungen steuerbar sind,
    - zwei Umschalter (41, 42), wobei jeder Umschalter zwei Verbindungspositionen besitzt und einen ersten Umschalterabschnitt (101) und einen zweiten Umschalterabschnitt (102) aufweist, die relativ zueinander beweglich sind, wobei die beiden Umschalter (41, 42) zwischen der Energiequelle (30) und entsprechend einem der jeweiligen Steuereingänge (25, 26) der beiden Elektromotoren (23, 24) in Reihe geschaltet sind, wobei einer der beiden Umschalterabschnitte (101) zwei Kontaktpole (43, 44) aufweist und der andere Umschalterabschnitt (102) einen aus einer elastischen Lamelle gebildeten Hebel (45) aufweist, wobei die beiden Umschalterabschnitte so steuerbar sind, dass sie sich relativ zueinander verlagern, derart, dass der Hebel aus einer Ruheposition in Kontakt mit einem oder mit dem anderen der beiden Pole (43, 44) in Kontakt gelangen kann,
    - Mittel (53) zum festen Montieren des ersten Umschalterabschnitts (101) jedes Umschalters an dem Rahmen (10) und
    - Mittel (50) zum Steuern der Verlagerung des zweiten Umschalterabschnitts (102) jedes Umschalters (41, 42) in Bezug auf den ersten Umschalterabschnitt, um den Hebel (45) in Abhängigkeit von der für die beiden Motoren (23, 24) gewünschten Drehrichtung in Kontakt mit dem einen oder dem anderen der beiden Pole (43, 44) zu bringen, wobei die Mittel (50) zum Steuern der Verlagerung des zweiten Umschalterabschnitts (102) jedes Umschalters (41, 42) in Bezug auf den ersten Abschnitt (101) ein Rohr (51), Mittel (53) zum Befestigen dieses zweiten Umschalterabschnitts (102) jedes Umschalters (41, 42) an dem Rohr (51) und Mittel zum Montieren dieses Rohrs so, dass es in Bezug auf den ersten Umschalterabschnitt (101) jedes Umschalters verlagerbar ist, umfassen, wobei die Mittel zum Befestigen eines ersten Endes jeder Lamelle an dem Rohr (51) derart, dass sich das zweite Ende der Lamelle in der Ruheposition zwischen den beiden Polen (43, 44) und ohne Kontakt mit ihnen befindet, eine Muffe aufweisen, die im Wesentlichen kongruent innerhalb des Rohrs gleitend montiert ist, wobei die Muffe einen Schlitz aufweist, in dem das erste Ende der Lamelle (45) befestigt ist, dadurch gekennzeichnet, dass das Rohr so beschaffen ist, dass seine beiden Enden bei freier Verlagerung zumindest teilweise den ersten Umschalterabschnitt (101) jedes Umschalters (41, 42) umschließen.
  2. Stuhl nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Montieren des Rohrs verlagerbar in Bezug auf den ersten Umschalterabschnitt (101) jedes Umschalters elastische Mittel aufweisen, die geeignet sind, auf das Rohr in Bezug auf den Rahmen in einer Richtung senkrecht zu der Längsachse dieses Rohrs (51) elastisch einzuwirken.
  3. Stuhl nach Anspruch 2, dadurch gekennzeichnet, dass die elastischen Mittel, die geeignet sind, in einer Richtung senkrecht zu der Längsachse des Rohrs (51) zu wirken, durch die elastische Lamelle (45) gebildet sind und Mittel zum Befestigen des zweiten Endes der Lamelle an dem Umschalterabschnitt (101) zwei Kontaktpole (43, 44) aufweisen, so dass der Lamellenabschnitt zwischen seinem ersten und seinem zweiten Ende zwischen diesen beiden Polen (43, 44) verläuft.
  4. Stuhl nach Anspruch 3, dadurch gekennzeichnet, dass die elastischen Mittel, die geeignet sind, in einer Richtung senkrecht zu der Längsachse des Rohrs (51) zu wirken, durch mindestens eine Ringdichtung (58) gebildet sind, die aus einem Material mit sehr geringer Elastizität hergestellt ist und zwischen dem ersten Abschnitt jedes Umschalters und der Innenwand des Rohrs eingefügt ist.
  5. Stuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Rohr (51) aus zwei Halbrohren (51-1, 51-2) und aus Mitteln (60), um sie im Wesentlichen koaxial aneinanderzufügen, gebildet ist.
  6. Stuhl nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel (60) zum im Wesentlichen koaxialen Aneinanderfügen der beiden Halbrohre durch ein Gehäuse gebildet sind, wobei ein Teil der elektronischen Steuerschaltung der Motoren in diesem Gehäuse aufgenommen ist, und dass die Mittel zum Verbinden der Energiequelle (30) mit den beiden Elektromotoren (23, 24) durch Drahtverbindungen über die elektronische Schaltung gebildet sind, wobei die Drahtverbindungen im Inneren der Halbrohre (51-1, 51-2) verlaufen.
  7. Stuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er ferner Mittel (200) zum Bestimmen der Stärke der Kraft, die auf die Lamellen ausgeübt wird, um die Drehzahl der Motoren zu steuern, umfasst.
  8. Stuhl nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Motoren (23, 24) bürstenlose Motoren sind.
EP19710767.5A 2018-03-15 2019-03-04 Rollstuhl Active EP3764967B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1870289A FR3078885A1 (fr) 2018-03-15 2018-03-15 Fauteuil roulant
PCT/IB2019/000104 WO2019175653A1 (fr) 2018-03-15 2019-03-04 Fauteuil roulant

Publications (2)

Publication Number Publication Date
EP3764967A1 EP3764967A1 (de) 2021-01-20
EP3764967B1 true EP3764967B1 (de) 2022-02-09

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ID=62528758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19710767.5A Active EP3764967B1 (de) 2018-03-15 2019-03-04 Rollstuhl

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EP (1) EP3764967B1 (de)
FR (1) FR3078885A1 (de)
WO (1) WO2019175653A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778996A (en) * 1995-11-01 1998-07-14 Prior; Ronald E. Combination power wheelchair and walker
NL1026178C2 (nl) * 2004-05-12 2005-11-15 Ludgerus Beheer B V Rolstoel met aandrijfondersteuning en krachtsensor voor gebruik daarbij.
US8132634B1 (en) * 2008-07-24 2012-03-13 Flowers Ip Llc Electronic steering assembly for dual motor vehicle

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Publication number Publication date
FR3078885A1 (fr) 2019-09-20
WO2019175653A1 (fr) 2019-09-19
EP3764967A1 (de) 2021-01-20

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