EP2762121B1 - Rollstuhl mit Aufstehvorrichtung für körperlich behinderte Personen - Google Patents

Rollstuhl mit Aufstehvorrichtung für körperlich behinderte Personen Download PDF

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Publication number
EP2762121B1
EP2762121B1 EP14152745.7A EP14152745A EP2762121B1 EP 2762121 B1 EP2762121 B1 EP 2762121B1 EP 14152745 A EP14152745 A EP 14152745A EP 2762121 B1 EP2762121 B1 EP 2762121B1
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EP
European Patent Office
Prior art keywords
rocker
support assembly
stand
frame
wheelchair
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EP14152745.7A
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English (en)
French (fr)
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EP2762121A1 (de
Inventor
François Porcheron
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4 Power 4
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4 Power 4
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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
    • A61G5/06—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

Definitions

  • the present invention relates to a standing wheelchair for persons with reduced mobility.
  • Wheelchairs for persons with disabilities traditionally include a backrest and a seat arranged to accommodate a disabled person and allow him to move in a sitting position.
  • the backrest and the seat are relatively movable relative to each other, and relative to the frame, between a sitting position allowing a disabled person to sit in the chair to move, and a standing or vertical position in which the backrest and the seat are substantially vertical to straighten the disabled person and maintain in a vertical position.
  • a rudder mounted free to rotate relative to the frame, about a longitudinal axis of the chair.
  • the ends of the rudder are each connected to a freewheel wheelchair.
  • the rudder compensates at least in part for the roll movements of the chassis when the wheelchair rolls on an uneven surface, the freewheels are not at the same height.
  • such a rudder halves the differences in level between the right side and the left side of the chair when the latter moves on an uneven surface, which results for the user by a significantly increased comfort and better capabilities crossing for the chair.
  • the freedom of rotation of the spreader poses a problem during verticalization.
  • the verticalization of the chair is accompanied by an elevation of the center of gravity and the offset of the center of gravity to the front of the chair which, combined with the movements of the rudder, can cause a loss of stability of the chair when the latter is in the standing position.
  • the weight of the verticalized disabled person is then likely to lead to a risk of falling sideways.
  • the present invention aims to overcome this disadvantage by providing a wheelchair standing for person with reduced mobility, offering a substantially increased stability in the vertical position to limit any risk of a user falling, while offering the advantage of limiting the roll of the chassis for better user comfort and better crossing capabilities.
  • the subject of the present invention is a mobility wheelchair for a person with reduced mobility
  • the chair comprising a frame, and a support assembly intended to support a user, the support assembly being movable relative to the frame, between a sitting position in which the support assembly is arranged to receive and support a user in a seated position, and a vertical position in which the support assembly is arranged to straighten the user in a standing position
  • the chair also comprising a spreader, mounted free to rotate relative to the chassis, two wheels connected by the spreader, and the locking means of the spreader arranged to allow the free rotation of the spreader relative to the frame when the support assembly is in the sitting position and to lock the rotation of the spreader relative to the frame when the support assembly is in the vertical position, thus reversibly transforming an articulated frame into a rigid frame.
  • the articulated frame is transformed into a rigid frame when the chair is verticalized, because of immobilization of the lifter by the locking means, so that the chair according to the invention provides increased stability in the vertical position.
  • rigid frame means a chassis with four wheels necessarily resting on the same plane
  • articulated chassis means a frame relative to which, in opposition to the rigid chassis, the four wheels do not necessarily all rest on the same plan.
  • the lifter When the chassis is rigid, the lifter may be substantially horizontal and stationary relative to the chassis; when the chassis is articulated, the rudder is free to rotate relative to the chassis.
  • the locking means are movable relative to the frame
  • the chair comprises connecting means connecting the locking means to a movement transmission element, driven in displacement relative to the frame by the verticalization of the frame. support assembly, so that the displacement of the support assembly from the seated position to the vertical position causes a simultaneous movement of the locking means in the direction of the rudder to block the rudder.
  • the locking means are kinematically connected to the support assembly.
  • the locking of the spreader is therefore directly related to the verticalization kinematics.
  • the locking means are arranged to concomitantly block the rudder when the support assembly is moved in a vertical position, so that no action of the user is necessary to lock the rudder to avoid a fall of the user in case of forgetfulness.
  • the locking means comprise a bearing surface arranged at a distance from the spreader when the support assembly is in the seated position and arranged to bear against the rudder when the support assembly is moved to the position. verticalized, pressing the bearing surface against the rudder blocking the rotation of the rudder relative to the frame as the verticalization of the support assembly.
  • the locking means exert, via the support surface, an increasing progressive pressure on the spreader bar until the verticalization of the support assembly is complete. . This results in a progressive blockage of the rudder.
  • the spreader is arranged across the path described by the bearing surface during the verticalization of the support assembly, so that the bearing surface bears against the rudder before the support assembly. reaches the vertical position.
  • the rudder forms an obstacle to the complete travel of the support surface.
  • the bearing surface is arranged relative to the rudder to bear against the rudder during verticalization, whatever the position of the rudder relative to the frame at the time of verticalization.
  • the support surface catches the game of the rudder and gradually returns to the horizontal as the kinematic verticalization.
  • the bearing surface is symmetrical with respect to a median plane including the longitudinal axis of rotation of the rudder.
  • the distance between the longitudinal axis and the bearing surfaces is substantially the same on each side of the longitudinal axis, so that the forces exerted by the locking members on the rudder are similar on both sides longitudinal axis, which prevents any risk of imbalance of the chair due to the support of the locking members against the rudder.
  • the locking means comprise a locking lever movable in rotation relative to the frame around a first pivot connection P1
  • the connecting means comprise a second pivot connection P2 of axis substantially parallel to the axis. of the first pivot link P1
  • the arrangement of the first pivot link P1 and the second pivot link P2 being such that the verticalization of the support assembly causes the locking lever to rotate about the first pivot link P1 in order to press the bearing surface against the rudder to lock the rudder.
  • first pivot link P1 forms the tilting point of the locking lever
  • second pivot connection P2 forms the fulcrum on which the forces are exerted so that the bearing surface presses on or under the rudder .
  • the second pivot link P2 is arranged to describe a downward path when the support assembly is moved to the verticalized position, the center of gravity of the support assembly in the verticalized position being arranged so that the weight of the support assembly is transmitted to the locking lever via the second pivot link P2 so as to accentuate the support of the bearing surface against the rudder in the verticalized position.
  • the weight of the support assembly is transmitted to the locking lever, which presses, because of the cantilever between the first pivot link P1 and the second pivot link P2, further under the rudder .
  • the first pivot link P1 is arranged between the spreader and the second pivot link P2, the bearing surface being arranged to bear under or on the spreader bar.
  • the chair comprises a link secured to the frame, the link comprising a proximal end attached to the frame, and a distal end offset in front or rear of the spreader and connected by the first pivot link P1 to the locking lever, so that the locking lever is deported forward or backward of the rudder.
  • the bearing surface comprises a surface of an elastomeric abutment attached to the locking lever.
  • an elastomeric stop contributes in particular to the progressivity of the locking of the spreader.
  • the figures 1 and 2 show a wheelchair 1 wheelchair for person with reduced mobility, respectively in a vertical position, wherein the chair 1 can support a person in a standing position, and in a sitting position, in which the chair 1 can support a nobody in a sitting position.
  • the chair 1 therefore corresponds to a standing chair.
  • the chair 1 comprises a frame 2, and a support assembly, intended to support a user, movable relative to the frame 2, between the sitting position ( figures 2 , 4 , 6 and 8 ) in which the support assembly is arranged to receive and support a user in a seated position, and the vertical position ( figures 1 , 3 , 5 and 7 ) in which the support assembly is arranged to straighten the user in a standing position.
  • the support assembly may comprise a seat 4, a backrest 6 and a footrest 8.
  • the backrest 6 is for example connected to the seat 4 by a pivot connection of transverse axis, while the seat 4 is by example connected to the frame 2 by a pivot link P10 transverse axis.
  • the seat 4 In sitting position, the seat 4 can be substantially horizontal and the backrest 6 substantially vertical so that a user can be received sitting. In a vertical position, the seat 4 and the backrest 6 can be substantially coplanar, substantially vertical, to straighten the user by placing it in a position in which the user is standing.
  • the chair 1 also comprises a lifter 10, mounted free to rotate relative to the frame 2, about a pivot link P20 of longitudinal axis.
  • the chair 1 comprises two wheels 12 connected by the spreader bar 10. Each end of the spreader bar 10 can thus be connected to one of the idler wheels 12 by a pivot connection P30 with a vertical axis.
  • the wheels 12 can be crazy, as in the embodiment of the Figures 1 to 8 . They can be motorized or not.
  • the wheels 12 may correspond to the front wheels of the wheelchair 1, as in the embodiment shown in FIGS. Figures 1 to 8 .
  • the rear wheels can then correspond to 14 driving wheels, the chair 1 moving in propulsion.
  • the wheels 12 could correspond to the rear wheels of the wheelchair 1, while the front wheels could correspond to 14-wheel drive, the chair 1 then moving in traction.
  • the chair 1 can be motorized, and can therefore include one or more motors 16, for example electric.
  • the chair 1 may include moving means for moving the support assembly from the sitting position to the vertical position and vice versa.
  • the displacement means may comprise a jack 18, for example an electric jack.
  • the jack 18 may comprise an end connected to the frame 2, for example by a pivot connection, and an end connected to the seat 4, for example by another pivot connection.
  • the chair 1 comprises means for blocking the lifter 10, arranged to allow free rotation of the spreader 10 relative to the frame 2 when the support assembly is in the seated position but arranged to block the rotation of the 10 relative to the frame 2 when the support assembly is in the vertical position.
  • the locking means of the lifter 10 comprise at least one locking lever 20 having a bearing surface 22.
  • the locking means comprise two locking levers 20 arranged symmetrically with respect to a substantially vertical median plane, including, for example, the longitudinal axis of rotation of the spreader bar relative to the chassis 2.
  • Each locking lever 20 is rotatable relative to the frame 2 about a first pivot connection P1, here transverse axis, between an unlocking position in which the lever or levers 20 allow rotation of the rudder 10 relatively to the frame 2, and a locking position in which the lever or levers 20 prevent the rotation of the spreader 10 relative to the frame 2, in other words in which they immobilize the spreader 10 relative to the frame 2.
  • the bearing surface or surfaces 22 are arranged at a distance from the spreader bar 10 when the support assembly is in the seated position and are arranged to bear against the lifter 10 when the support assembly is moved to the vertical position.
  • the support of the bearing surfaces 22 against the spreader 10 blocks the rotation thereof relative to the frame 2. It is important to note that this blocking can advantageously be done as the verticalization of the assembly of support. In other words, the blockage can be progressive.
  • the chair 1 also comprises connecting means, comprising a second pivot link P2, of axis substantially parallel to the axis of the first pivot link P1, connecting the lever or levers 20 to a block of motion transmission, moved relative to the frame 2 due to the verticalization of the support assembly.
  • This transmission element may be part of the support assembly. This is for example the footrest 8.
  • the displacement of the support assembly from the seated position to the verticalized position causes a simultaneous movement of the lever or levers 20 in the direction of the lifter 10 to block the spreader 10, which has the effect of stiffening the frame 2 .
  • the arrangement of the first pivot connection P1 and the second pivot connection P2 is such that the verticalization of the support assembly causes the locking lever 20 to rotate around the first pivot connection P1 in order to bear on the surface 22 bearing against the lifter 10 to block the latter.
  • the displacement means such as the jack 18, can contribute to maintaining the bearing surface or surfaces 22 against the spreader bar 10 when the support assembly is in the verticalized position, by blocking, for example, the support assembly in the vertical position.
  • the lifter 10 can be arranged across the path described by the bearing surface or surfaces 22 during the verticalization of the support assembly, so that the bearing surface or surfaces 22 bear against the lifter 10 before the support assembly reaches the vertical position, the locking of the spreader 10 being thus carried out regardless of its position relative to the frame 2.
  • the bearing surface or surfaces 22 are advantageously symmetrical with respect to a substantially vertical median plane, including, for example, the longitudinal axis of rotation of the spreader 10 with respect to the frame 2. vertical position, the lifter 10 is maintained in a substantially horizontal position, parallel to the transverse axis Y.
  • the longitudinal axis about which the rudder 10 pivots can be arranged in the center of the rudder 10, the latter being itself substantially symmetrical with respect to a median plane including its longitudinal axis of rotation relative to the chassis 2.
  • the trajectory described by the bearing surface (s) 22 corresponds substantially to a central circle-circle placed on the axis of the first pivot link P1.
  • the first pivot link P1, the second pivot link P2, and the bearing surface 22 together form a triangle which is mobile in rotation with respect to the frame 2 about a transverse axis of rotation, one angles of this triangle, that formed by the first pivot link P1, remaining fixed relative to the frame 2.
  • the second pivot link P2 is arranged to describe a downward path when the support assembly is moved to the verticalized position, the center of gravity of the support assembly in the verticalized position being substantially above the second link pivot P2, to accentuate the support of the surface or surfaces 22 of support against the rudder 10.
  • the first pivot connection P1 can be arranged between the crossbar 10 and the second pivot link P2, the bearing surface 22 being arranged to bear under the crossbar 10.
  • the second pivot connection P2 can be arranged in front of the first pivot connection
  • the first pivot link P1 can be arranged in front of the spreader bar 10.
  • the chair 1 may comprise, for each locking lever 20, a rod 24 integral with the frame 2, the link 24 comprising a proximal end attached to the frame 2, and a distal end offset in front of the spreader 10 and connected by the first pivot connection P1 to the locking lever 20, so that the locking lever 20 is offset in front of the spreader bar 10.
  • the footrest 8 may be pivotally mounted about a pivot link P40, with a transverse axis, relative to a drive member 26 pivotally mounted about a pivot link P50, with a transverse axis, relative to the frame 2, so that the pivot links P50, P40, P2 and P1 form the four vertices of a deformable quadrilateral of which only the segment [P50, P1] remains fixed relative to the frame 2 during the uprighting of the chair 1.
  • the drive member 26 extends a lower seat tube 27 forming a lever arm for driving down the footrest 8 to deform the quadrilateral P50, P40, P2, P1 in connection with the verticalization kinematics .
  • the lower seat tube 27 pivots around the pivot connection P50 during the verticalization kinematics, to deform a deformable parallelogram formed by the pivot links P50, P10, P60, P70 of which only the pivot connection P10 is fixed relative to to the chassis 2.
  • the drive member 26 transfers the mass of the user deported towards the front of the chair 1 during verticalization in order to relieve the jack 18.
  • bearing surface 22 may comprise a surface of an elastomeric abutment 28 attached to the corresponding locking lever 20.
  • the locking means may comprise a lug arranged to be housed in a bore formed on the spreader 10 in order to block the rotation of the rudder.
  • the blocking would be neither below nor above the rudder 10, but in a through manner.
  • the bearing surface 22 could then correspond to the lateral surface of the lug.
  • This lug could be attached to the footrest 8.
  • the locking means may also comprise, in replacement or in addition, a strap forming a loop within which the rudder 10 extends.
  • the support surface 22 could then correspond to one of the faces of the rudder. this strap.
  • bearing surface 22 can be arranged to support, not under, but on the spreader 10.

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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)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (10)

  1. Aufsteh-Rollstuhl (1) für Personen mit eingeschränkter Mobilität, wobei der Rollstuhl (1) ein Gestell (2) und eine Trageinheit umfasst, die dazu bestimmt ist, einen Benutzer zu tragen, wobei die Trageinheit in Bezug zum Gestell (2) zwischen einer Sitzposition, in der die Trageinheit derart angeordnet ist, dass sie einen Benutzer aufnimmt und in einer sitzenden Position trägt, und einer stehenden Position, in der die Trageinheit derart angeordnet ist, dass sie den Benutzer in eine aufrechte Position aufrichtet, beweglich ist, wobei der Rollstuhl (1) auch einen Steuerhebel (10), der frei drehbar in Bezug zu dem Gestell (2) montiert ist, zwei Räder (12), die durch den Steuerhebel (10) verbunden sind, umfasst, dadurch gekennzeichnet, dass Feststellmittel des Steuerhebels (10) derart angeordnet sind, dass sie die freie Drehung des Steuerhebels (10) in Bezug zum Gestell (2) gestatten, wenn die Trageinheit in der Sitzposition ist, und dass sie die Drehung des Steuerhebels (10) in Bezug zum Gestell (2) feststellen, wenn die Trageinheit in der stehenden Position ist, wodurch auf reversible Weise ein gelenkiges Gestell (2) in ein starres Gestell (2) umgewandelt wird.
  2. Rollstuhl (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Feststellmittel in Bezug zum Gestell (2) beweglich sind, und der Rollstuhl (1) Verbindungsmittel umfasst, die die Feststellmittel mit einem Element zur Bewegungsübertragung verbinden, das in Verschiebung in Bezug zum Gestell (2) durch die Aufstehvorrichtung der Trageinheit angetrieben wird, damit die Verschiebung der Trageinheit von der Sitzposition in die Stehposition eine gleichzeitige Verschiebung der Feststellmittel in Richtung des Steuerhebels (10) hervorruft, um den Steuerhebel (10) festzustellen.
  3. Rollstuhl (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Feststellmittel derart angeordnet sind, dass sie den Steuerhebel (10) begleitend mit der Verschiebung der Trageinheit in Stehposition feststellen, so dass keine Betätigung des Benutzers notwendig ist, um den Steuerhebel (10) festzustellen, um ein Herunterfallen des Benutzers im Falle von Vergessen zu vermeiden.
  4. Rollstuhl (1) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Feststellmittel eine Stützfläche (22) umfassen, die in einem Abstand zum Steuerhebel (10) angeordnet ist, wenn sich die Trageinheit in der Sitzposition befindet, und die dazu vorgesehen ist, am Steuerhebel (10) zur Anlage zu gelangen, wenn die Trageinheit in die Stehposition verschoben wird, wobei die Anlage der Stützfläche (22) an dem Steuerhebel (10) die Drehung des Steuerhebels (10) in Bezug zum Gestell (2) im Zuge der Aufrichtung der Trageinheit feststellt.
  5. Rollstuhl (1) nach Anspruch 4, dadurch gekennzeichnet, dass der Steuerhebel (10) quer über die Bahn angeordnet ist, die von der Stützfläche (22) bei der Aufrichtung der Trageinheit in Stehposition beschrieben wird, so dass die Stützfläche (22) an dem Steuerhebel (10) zur Anlage gelangt, bevor die Trageinheit die Stehposition erreicht.
  6. Rollstuhl (1) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Stützfläche (22) in Bezug zum Steuerhebel (10) derart angeordnet ist, dass sie an dem Steuerhebel (10) während der Verschiebung in Stehposition zur Anlage gelangt, unabhängig von der Position des Steuerhebels (10) in Bezug zum Gestell (2) zum Zeitpunkt der Aufrichtung.
  7. Rollstuhl (1) nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Stützfläche (22) zu einer Mittelebene, die die Längsdrehachse des Steuerhebels (10) einschließt, symmetrisch ist.
  8. Rollstuhl (1) nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, das die Feststellmittel einen Feststellhebel (20) umfassen, der in Drehung in Bezug zum Gestell (2) um eine erste Schwenkverbindung (P1) beweglich ist, und dass die Verbindungsmittel eine zweite Schwenkverbindung (P2) mit einer Achse im Wesentlichen parallel zur Achse der ersten Schwenkverbindung (P1) umfassen, wobei die Anordnung der ersten Schwenkverbindung (P1) und der zweiten Schwenkverbindung (P2) derart ist, dass die Aufrichtung der Trageinheit in Stehposition die Drehung des Feststellhebels (20) um die erste Schwenkverbindung (P1) hervorruft, um die Stützfläche (22) am Steuerhebel (10) zur Anlage zu bringen, um den Steuerhebel (10) festzustellen.
  9. Rollstuhl (1) nach Anspruch 8, dadurch gekennzeichnet, dass die zweite Schwenkverbindung (P2) derart angeordnet ist, dass sie eine absteigende Bahn beschreibt, wenn die Trageinheit in die Stehposition verschoben wird, wobei der Schwerpunkt der Trageinheit in der Stehposition derart vorgesehen ist, dass das Gewicht der Trageinheit auf den Feststellhebel (20) über die zweite Schwenkverbindung (P2) übertragen wird, um die Anlage der Stützfläche (22) am Steuerhebel (10) in der Stehposition zu verstärken.
  10. Rollstuhl (1) nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die erste Schwenkverbindung (P1) zwischen dem Steuerhebel (10) und der zweiten Schwenkverbindung (P2) angeordnet ist, wobei die Stützfläche (22) derart vorgesehen ist, dass sie unter oder auf dem Steuerhebel (10) zur Anlage gelangt.
EP14152745.7A 2013-02-01 2014-01-27 Rollstuhl mit Aufstehvorrichtung für körperlich behinderte Personen Active EP2762121B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1350897A FR3001632B1 (fr) 2013-02-01 2013-02-01 Fauteuil roulant verticalisateur pour personne a mobilite reduite

Publications (2)

Publication Number Publication Date
EP2762121A1 EP2762121A1 (de) 2014-08-06
EP2762121B1 true EP2762121B1 (de) 2015-09-30

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EP14152745.7A Active EP2762121B1 (de) 2013-02-01 2014-01-27 Rollstuhl mit Aufstehvorrichtung für körperlich behinderte Personen

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FR (1) FR3001632B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104706480B (zh) * 2015-03-25 2016-09-07 谢空成 一种多功能轮椅

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6206119B1 (en) * 1999-05-05 2001-03-27 Donald P. H. Wu Electrical wheelchair with double frame structure
US7766106B2 (en) * 2005-07-14 2010-08-03 Pride Mobility Products Corporation Powered wheelchair configurations and related methods of use
CH713464B1 (de) * 2007-08-24 2018-08-15 Levo Ag Wohlen Fahrzeug mit Mittenradantrieb, insbesondere Rollstuhl oder Aufrichtrollstuhl.

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EP2762121A1 (de) 2014-08-06
FR3001632A1 (fr) 2014-08-08

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