EP3205320B1 - Mécanisme de traction pour un système auxiliaire de mobilité d'une chaise roulante - Google Patents

Mécanisme de traction pour un système auxiliaire de mobilité d'une chaise roulante Download PDF

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Publication number
EP3205320B1
EP3205320B1 EP15797369.4A EP15797369A EP3205320B1 EP 3205320 B1 EP3205320 B1 EP 3205320B1 EP 15797369 A EP15797369 A EP 15797369A EP 3205320 B1 EP3205320 B1 EP 3205320B1
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EP
European Patent Office
Prior art keywords
driving plate
traction mechanism
retractable pin
connecting rod
linked
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.)
Active
Application number
EP15797369.4A
Other languages
German (de)
English (en)
Other versions
EP3205320A1 (fr
Inventor
Pablo Alejandro Bach Castillo
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.)
Batec Mobility SL
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Batec Mobility SL
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Publication date
Application filed by Batec Mobility SL filed Critical Batec Mobility SL
Publication of EP3205320A1 publication Critical patent/EP3205320A1/fr
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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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/024—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular operating means
    • A61G5/026—Cranks or hand wheels
    • 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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/027—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person by using auxiliary detachable mechanisms
    • 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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/021—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular propulsion mechanisms
    • A61G5/023—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person having particular propulsion mechanisms acting directly on hubs or axis
    • 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
    • A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system

Definitions

  • the present invention patent application aims to register a traction mechanism for an auxiliary mobility system for a wheelchair incorporating remarkable innovations and advantages.
  • the invention focuses on traction or drive mechanisms for motor accessories intended to be mounted on wheelchairs for physically handicapped people, particularly accessories consisting of a wheel, a directional means, such as for example a handlebar, and means of impulsion in order to move the chair.
  • Wheelchairs intended for use by people with a disability of the lower extremities are well known in the state of the art.
  • auxiliary mobility systems to be coupled to wheelchairs, facilitating the use of these wheelchairs, such as the one described in Spanish Patent no. ES 2425316 and shown in Figure 1 as a reference, are also known in the state of the art.
  • the operation of such systems may be essentially mechanical, based on the use of a rotating plate associated to a fully electric drive chain through the use of electric batteries and a hybrid operation, in which there may be a manual drive and an electric drive through the use of driving means associated to the shaft of the wheel.
  • driving means transmit movement to a rotating wheel for driving its rotation.
  • the present invention has been developed with the aim of providing a traction mechanism that constitutes a novelty within the field of application, and solves the drawbacks mentioned above while also contributing other additional advantages, which will become evident from the description provided below.
  • an object of the present invention is to provide a traction mechanism for an auxiliary mobility system for a wheelchair, specifically of the type comprising two rotating plates, separated and being able to be coupled to each other, integrally in a first position, each of these rotating plates being linked to a corresponding upper limb of a user through a connecting rod, a first driving plate being linked to a drive chain for transmitting the movement to a wheel and a second driven plate which receives movement from the first driving plate.
  • the invention is characterized in that it comprises coupling/decoupling means which link the driving plate to the connecting rod associated to said driving plate, and a means for detecting motion linked to the activation of an electric motor, such that in a first position of movement transmission to the wheel, the connecting rod is coupled to the driving plate; in a second position disconnected from movement, the connecting rod is decoupled from the driving plate, and wherein the electric motor can be activated after receiving a signal from the means for detecting when the connecting rod is rotated. And a third operating position in which the connecting rod is decoupled and the coupling/decoupling means (explained below) are unlocked.
  • the coupling/decoupling means comprise a retractable pin, which is coupled to the connecting rod linked to the driving plate, the driving plate having a coupling region for joining to the retractable pin.
  • the coupling/decoupling means include resilient means linked to the retractable pin.
  • the retractable pin may be housed inside a bushing fixed to the connecting rod linked to the driving plate, the bushing having positioning means for adjusting the position of the retractable pin.
  • the positioning means consist of a flange at the end of the bushing with an oblique cut with respect to the longitudinal axis of the bushing itself.
  • one end of the retractable pin includes an integral lever, which is rotatably displaceable over the oblique cut.
  • the coupling region in the driving plate consists of a protruding portion parallel to a meshing region for the drive chain in the driving plate, the protruding portion having an arcuate trajectory slit.
  • the two connecting rods are integrally joined to each other by means of a hub that passes through the two rotating plates, and which is axially aligned with the rotating plates.
  • the hub may include a motion sensor, which depending on the detected motion starts the motor.
  • This previously described mechanism is especially intended to be used with a conventional brake handle, i.e., like the handles provided on a bicycle, although it should be mentioned that it can be replaced by a coaster brake system when the user has certain hand movement limitations.
  • an advantage of the invention is the fact that it enables a wheelchair for the disabled with a coupled auxiliary mobility system to be moved, such that the movement of the wheels of the wheelchair themselves and the wheel of the auxiliary system is not transmitted to the connecting rods, nor does it interfere with the operation of a coaster brake, should it be incorporated into the drive assembly.
  • the mechanism described above enables the wheelchair with the coupled auxiliary system to be moved both forward and backward, without the movement of the wheel moving the connecting rods and interfering with the coaster brake (should it be installed), thus improving the maneuverability and safety of the wheelchair.
  • the traction mechanism indicated generally under reference (1) is intended to form part of an auxiliary mobility system for a wheelchair (not shown) comprising two rotating plates (2, 3) separated and capable of being coupled to each other in a first position, each of these rotating plates (2, 3) being linked to a corresponding upper limb of a user through a respective connecting rod (4, 5).
  • the two connecting rods (4, 5) are identical to each other and are made of any suitable material commonly used in the manufacture of connecting rods for bicycles.
  • a first driving plate (2) is linked to a drive chain (12) through a cogwheel that enables the transmission of the movement to a wheel forming part of the auxiliary mobility system and a second driven plate (3), which receives movement from the first driving plate (2).
  • Such traction mechanism (1) comprises means for coupling/decoupling (to be explained in more detail below), which link the driving plate (2) to the connecting rod (4) associated to said driving plate (2), such that in a first position of movement transmission to the wheel, the connecting rod (4) is coupled to the driving plate (2) while in a second position disconnected from movement, said connecting rod (4) is decoupled with respect to the driving plate (2).
  • the means for coupling/decoupling they comprise a retractable pin (10), which is coupled to the connecting rod (4) linked to the driving plate (2), the driving plate (2) having a coupling region for joining to the retractable pin; and resilient means linked to the retractable pin (10).
  • the coupling region in the driving plate (2) consists of a protruding section (20) which is parallel to a meshing region for the drive chain in the driving plate (2), the protruding section (20) having an elongated slit (201) with an arcuate trajectory.
  • This retractable pin (10) is housed inside a bushing (6) fixed to the connecting rod linked to the driving plate (2), the retractable pin (10) passing through a hole (42) carried out in the connecting rod (4), the bushing (6) having positioning means for adjusting the position of the retractable pin (10).
  • the positioning means consist of a flange (60) on the end of the bushing (6) with an oblique cut with respect to the longitudinal axis of the bushing (6) itself.
  • the retractable pin can adopt three different operating positions, dud to the geometry defined by the oblique cut of the bushing (6).
  • an ergonomic lever (9) is provided at one end of the retractable pin (10) and integral to said retractable pin (10), which is rotatably displaceable on the oblique cut, such operating positions being as follows:
  • this second position is especially useful in situations where the user is physically tired, the chair is on a steep slope, in narrow places or in traffic situations with other vehicles since the user does not have to make an effort, he only has to move the connecting rods.
  • the third operating position is particularly useful for starting to move with very little effort, in the case of users with reduced strength, in case of fatigue or having to move the wheelchair on a slope.
  • the two connecting rods (4, 5) are integrally joined to each other by means of a hub (7) that passes through the two rotating plates (2, 3), each of the ends of the hub (7) having extensions (70) with a rectangular cross section that are coupled to holes (40) in each of the connecting rods (4).
  • the motion sensor is arranged in said hub (7).

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Agricultural Machines (AREA)
  • Handcart (AREA)

Claims (7)

  1. Un mécanisme de traction (1) pour un système auxiliaire de mobilité, comprenant deux plaques rotatives, séparées et pouvant être couplées l'une à l'autre de façon intégrale dans une première position, chacune desdites plaques rotatives est destinée à être engagée par un membre supérieur correspondant d'un utilisateur par le biais d'une tige de connexion, un premier disque d'entraînement (2) étant relié à une chaîne de transmission pour transmettre le mouvement à une roue et un deuxième disque d'entraînement recevant le mouvement du premier disque d'entraînement (2), caractérisé en ce qu'il comprend un moyen de couplage/découplage reliant le disque d'entraînement à la tige de connexion liée audit disque d'entraînement (2), et un moyen de détection du mouvement lié à l'actionnement d'un moteur électrique et au mouvement de la tige de connexion,
    ledit moyen de couplage/découplage comprenant une goupille rétractable (10), qui est couplée à la tige de connexion reliée au disque d'entraînement (2), le disque d'entraînement ayant une région de couplage pour l'union avec la goupille rétractable (10), la région de couplage du disque d'entraînement étant constituée par une partie faisant saillie parallèle à une région d'engrènement pour la chaîne de transmission dans le disque d'entraînement (2), le partie faisant saillie ayant une fente de trajectoire arquée.
  2. Le mécanisme de traction (1) selon la revendication 1, caractérisé en ce que le moyen de couplage/découplage inclut un moyen résiliant relié à la goupille rétractable (10).
  3. Le mécanisme de traction (1) selon la revendication 1, caractérisé en ce que la goupille rétractable est logée dans une douille fixée à la tige de connexion reliée au disque d'entraînement (2), la douille ayant un moyen de positionnement pour ajuster la position de la goupille rétractable (10).
  4. Le mécanisme de traction (1) selon la revendication 3, caractérisé en ce que le moyen de positionnement se compose d'un flanc dans une extrémité de la douille avec une coupe oblique par rapport à l'axe longitudinale de la douille elle-même.
  5. Le mécanisme de traction (1) selon les revendications 1 et 4, caractérisé en ce qu'une extrémité de la goupille rétractable (10) inclut un levier intégral, qui peut être déplacé par rotation sur la coupe oblique.
  6. Le mécanisme de traction (1) selon la revendication 1, caractérisé en ce que les deux tiges de connexion (4, 5) sont assemblées de façon intégrale l'une avec l'autre moyennant un moyeu (7) qui passe à travers les deux plaques rotatives.
  7. Le mécanisme de traction (1) selon les revendications 1 et 6, caractérisé en ce que le moyen de détection du mouvement se compose d'au moins un capteur de mouvement disposé dans le moyeu (7).
EP15797369.4A 2014-10-10 2015-10-08 Mécanisme de traction pour un système auxiliaire de mobilité d'une chaise roulante Active EP3205320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201431492A ES2526715B1 (es) 2014-10-10 2014-10-10 Mecanismo tractor para un sistema auxiliar de movilidad para una silla de ruedas
PCT/ES2015/070734 WO2016055685A1 (fr) 2014-10-10 2015-10-08 Mécanisme de traction pour un système auxiliaire de mobilité d'une chaise roulante

Publications (2)

Publication Number Publication Date
EP3205320A1 EP3205320A1 (fr) 2017-08-16
EP3205320B1 true EP3205320B1 (fr) 2018-12-12

Family

ID=52273634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15797369.4A Active EP3205320B1 (fr) 2014-10-10 2015-10-08 Mécanisme de traction pour un système auxiliaire de mobilité d'une chaise roulante

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Country Link
EP (1) EP3205320B1 (fr)
ES (2) ES2526715B1 (fr)
WO (1) WO2016055685A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1540324A (fr) * 1967-03-06 1968-09-27 Dispositif moteur et directeur adaptable à un fauteuil d'handicapé physique, pour réaliser une voiturette
US5501480A (en) * 1993-06-04 1996-03-26 Ordelman; Hendrik J. Auxiliary frame for a wheelchair and wheelchair for use with an auxiliary frame
EP0629390A1 (fr) * 1993-06-04 1994-12-21 Hendrik Jan Ordelman Cadre auxiliaire pour fauteuil roulant et fauteuil roulant utilisant ce cadre auxiliaire
US5899476A (en) * 1997-12-08 1999-05-04 Noyola; Rufino Auxiliary frame with propulsion and steering means for attachment to wheelchair
US6883632B2 (en) * 2001-06-29 2005-04-26 Mchardy Lang J. Manual-electric wheelchair drive device
US6669222B1 (en) * 2002-08-09 2003-12-30 John M. Barrett Folding unicycle attachment for a wheelchair
US20080246246A1 (en) * 2005-09-30 2008-10-09 Pat Pending Marketing, Inc. Wheelchair propulsion and exercise attachment
DE102012109833B4 (de) * 2012-10-16 2015-11-26 Bettina Kuhlmann Zugmittel mit einem Motor und einer Steuerung für einen Rollstuhl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2526715B1 (es) 2015-08-13
EP3205320A1 (fr) 2017-08-16
ES2526715A1 (es) 2015-01-14
WO2016055685A1 (fr) 2016-04-14
ES2715118T3 (es) 2019-05-31

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