EP3539521B1 - Fauteuil roulant - Google Patents

Fauteuil roulant Download PDF

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Publication number
EP3539521B1
EP3539521B1 EP19158262.6A EP19158262A EP3539521B1 EP 3539521 B1 EP3539521 B1 EP 3539521B1 EP 19158262 A EP19158262 A EP 19158262A EP 3539521 B1 EP3539521 B1 EP 3539521B1
Authority
EP
European Patent Office
Prior art keywords
friction wheel
wheel drive
wheelchair
lever
brake
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
EP19158262.6A
Other languages
German (de)
English (en)
Other versions
EP3539521A1 (fr
Inventor
Andreas Nahrwold
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.)
Meyra GmbH
Original Assignee
Meyra 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
Priority claimed from DE102018129289.9A external-priority patent/DE102018129289A1/de
Application filed by Meyra GmbH filed Critical Meyra GmbH
Publication of EP3539521A1 publication Critical patent/EP3539521A1/fr
Application granted granted Critical
Publication of EP3539521B1 publication Critical patent/EP3539521B1/fr
Active 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
    • A61G5/02—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
    • A61G5/04—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
    • 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
    • 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
    • A61G5/1018—Wheelchairs having brakes engaging the wheel on the running surface
    • 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
    • A61G5/1035—Wheelchairs having brakes manipulated by wheelchair user

Definitions

  • the invention relates to a wheelchair of the type mentioned in the preamble of claim 1.
  • Such wheelchairs are generally known and can, for example, be designed as push wheel wheelchairs. They have a frame on which drive wheels having tires are arranged. The known wheelchairs also have a brake which can be brought into engagement for braking the wheelchair and disengaged for driving operation.
  • the invention is based on the object of specifying a wheelchair of the type mentioned in the preamble of claim 1, which is improved in particular with regard to its practicality.
  • the friction wheel drive according to the invention can be assembled and disassembled in a simple and quick manner and also be retrofitted to existing wheelchairs.
  • Another advantage of the friction wheel drive according to the invention is that it only slightly increases the weight of the wheelchair while at the same time significantly expanding its functionality.
  • the friction wheel drive when appropriately arranged on the frame of the wheelchair, does not increase the width of the wheelchair and also does not impair its foldability.
  • the assembly of a friction drive according to the invention does not require any permanent changes to the frame of the wheelchair, in particular no interventions in the form of bores or the like.
  • the braking position is one in the direction of travel of the wheelchair's front end position, the neutral position of a rear end position in the direction of travel of the wheelchair and the friction wheel drive position of an intermediate position of the actuating element. In this way, the manner of actuating the brake known from conventional wheelchairs is retained.
  • the actuating lever is expediently mounted pivotably about a lever axis which is stationary with respect to the frame of the wheelchair, as an advantageous development of the invention provides.
  • the friction wheel drive can be permanently installed on the wheelchair.
  • the friction wheel drive is designed as a friction wheel drive unit which is designed such that it can be mounted on the wheelchair or removed from the wheelchair without tools. In this way, the friction wheel drive can be assembled and used by a user of the wheelchair as required, for example to negotiate an incline, and can be dismantled again after use without the need for tools.
  • An advantageous further development of the aforementioned embodiment provides locking means for locking the friction wheel drive unit in the assembly position. This prevents the friction wheel drive unit from being released in an undesirable manner during use.
  • lever gear has a first sub-gear assigned to the friction wheel drive and a second sub-gear assigned to the brake.
  • the first partial transmission has a two-armed first lever which is rotatably mounted about a first axis which is stationary with respect to the frame of the wheelchair, wherein one end of the two-armed first lever in the assembly position of the friction drive carries a friction wheel of the friction drive and its other end is rotatably connected to one end of a first bent lever, the other end of which is eccentrically rotatably connected to the lever axis of the actuating lever and / or that the second Partial transmission has a one-armed second lever which is rotatably mounted about a second axis fixed in relation to the frame of the wheelchair, a free end of the second lever carrying a braking element of the brake and one end of a second bent with the second lever rotatable away from its ends Lever is connected, the other end of which is rotatably connected to the operating lever eccentrically to its main axis.
  • an advantageous development provides that the stationary main axis, the stationary first axis and the stationary second axis are arranged on a straight line.
  • the first partial transmission forms a dead center arrangement which is in the dead center position in the friction wheel drive position and / or that the second partial transmission forms a dead center arrangement, which is in the braking position at dead center.
  • a corresponding dead center arrangement prevents the lever mechanism from moving from the selected position (braking position or friction wheel drive position) into another position in an undesired manner, that is to say without actuating the actuating element.
  • the friction wheel drive unit has a measuring roller
  • the assembly position of the friction wheel drive unit is preferably spring-loaded against a tire of the wheelchair and is in rotary drive connection with a rotary encoder which is in signal transmission connection with a control device which is designed and programmed in such a way that the friction wheel drive unit can be controlled as a function of output signals from the rotary encoder is or is being controlled.
  • the measuring roller can for example and in particular serve to determine the actual speed of a drive wheel of the wheelchair to which the friction wheel drive is assigned, which, for example, deviates from the speed assumed on the basis of the speed of the friction wheel drive due to slip.
  • An advantageous further development of the aforementioned embodiment accordingly provides that the control device is designed and programmed in such a way that the actual speed of the wheelchair drive wheel driven by the friction wheel drive unit can be determined or determined from the output signals of the rotary encoder.
  • a friction wheel drive unit is assigned to each of the two drive wheels of the wheelchair and the rotary encoders of the measuring rollers of the friction wheel drive units are in signal transmission connection with the control device, which is designed and programmed in such a way that both friction wheel drive units are dependent on Output signals of the rotary encoders are or are being controlled.
  • the speeds of the friction wheel drive units assigned to the two drive wheels can be controlled or regulated independently of one another in such a way that the wheelchair will travel straight ahead even if slip occurs between the friction wheel drive unit and the drive wheel is when a user of the wheelchair has actuated a control unit of the friction wheel drive for straight travel.
  • An advantageous further development of the aforementioned embodiment provides that the speeds of the friction wheel drive units can be controlled or regulated independently of one another as a function of the output signals of the measuring rollers.
  • the brake has a carrier element connected to the frame of the wheelchair, on which a brake element is arranged, which is between an engagement position in which the brake is engaged and a disengaged position in which the brake is disengaged, is movable, a receptacle for mounting the friction wheel drive unit being formed on the carrier element.
  • the carrier element of the brake simultaneously forms a receptacle and a mounting point for the friction wheel drive unit.
  • the or each friction wheel (friction roller) of the friction drive can consist of any suitable material, depending on the respective requirements.
  • the friction wheel can be made of steel, for example stainless steel, and can be provided with knurling on its outer circumference. In this way, the friction wheel is not susceptible to environmental influences and mechanical wear.
  • the actuating element is in operative connection with the friction wheel drive in such a way that the actuating element switches the friction wheel drive electrically.
  • the friction wheel drive electrically switched on or off when the actuating element is brought into a corresponding position. In this way, a separate switch for electrically switching the friction wheel drive breaks.
  • At least one joystick can be provided, which can be arranged for example and in particular on a housing of a friction wheel drive unit.
  • more than one joystick can also be provided, for example a separate joystick for two friction wheel drive units on the housing of each of the friction wheel drive units. It is also possible, for example, to arrange a joystick on a push handle of the wheelchair so that the friction wheel drive is operated by an attendant.
  • the friction wheel drive can also be controlled, for example, via a smartphone that the wheelchair user or an accompanying person carries with them. Control via a separate hand-held transmitter is also possible depending on the respective requirements. When using a corresponding wireless control unit, this is preferably in control connection with the friction wheel drive via a radio connection.
  • the electrical and mechanical components of a friction wheel drive unit in particular the actually electric motor drive, an associated electronic control device and a battery or a rechargeable battery, can be accommodated or arranged in or on a housing of a friction wheel drive unit according to the respective requirements.
  • the tires of the wheelchair are equipped with a tire pressure monitoring system.
  • a tire pressure monitoring system By maintaining a predetermined or predetermined tire pressure, it is ensured that a friction wheel of the friction wheel drive is always in a defined position System is located on the assigned tire of the wheelchair.
  • a friction wheel drive unit on a frame of a wheelchair, for example and in particular an adapter connected to the frame via a clamp connection can be used.
  • an adapter connected to the frame via a clamp connection can be used.
  • existing wheelchairs can be equipped or retrofitted with a friction wheel drive according to the invention in a simple and uncomplicated manner.
  • both wheels of the wheelchair are to be driven, a separate friction wheel drive unit is assigned to each wheel. According to the invention, however, it is also possible to use a friction wheel drive unit on only one wheel, so that the corresponding wheel is driven by an electric motor and the user of the wheelchair drives the other wheel by hand.
  • a corresponding embodiment is particularly relevant for people with half-width restrictions.
  • Fig. 1 is shown in a perspective view an embodiment of a manually operated wheelchair 2 according to the invention, which is designed as a push rim wheelchair.
  • the wheelchair 2 has a frame 4 on which drive wheels 6, 8 with tires are arranged.
  • the wheelchair 2 has a brake 10 which can be brought into engagement for braking the wheelchair 2 and disengaged for driving operation.
  • the wheelchair 2 also has a friction wheel drive 12 which can be engaged for motorized driving and disengaged for manual driving.
  • the brake 10 and the friction wheel drive 12 are operatively connected to a common actuating element for engaging and disengaging the brake 10 and the friction wheel drive 12.
  • the common actuating element is a manually operable actuating element in the form of an actuating lever 14 (cf. Fig. 1 ).
  • the operating lever 14 has a neutral position in which both the brake and the friction wheel drive are disengaged, a braking position in which the brake is engaged and the friction wheel drive is disengaged, and a Friction wheel drive position in which the brake is disengaged and the friction wheel drive is engaged.
  • the braking position corresponds to a front end position in the direction of travel of the wheelchair 2
  • the neutral position corresponds to a rear end position in the direction of travel of the wheelchair
  • the friction wheel drive position corresponds to an intermediate position of the actuating lever 14.
  • the friction wheel drive 12 has friction wheel drive units which are designed in such a way that they can be mounted on the wheelchair 2 or removed from the wheelchair 2 without tools. Only a friction wheel drive unit 16 assigned to the wheel 8 is explained in more detail below. A corresponding friction wheel drive unit assigned to the wheel 6 is constructed accordingly. It is therefore not explained in more detail here and is also omitted from the drawing for reasons of clarity.
  • the friction drive unit 16 is in Fig. 2 and Fig. 3 together with the wheelchair 2 and in Fig. 4 and Fig. 5 shown in and of itself without the wheelchair 2.
  • the friction wheel drive unit 16 has a friction wheel 18 which is in rotary drive connection with an electric motor 20 (cf. Fig. 2 and Fig. 3 ) In the assembly position of the friction wheel drive unit 16, the friction wheel 18 rests against the radial outer surface of the drive wheel 8, so that when the friction wheel 18 rotates, the drive wheel 8 is driven in rotation.
  • the friction wheel drive unit 16 and the additional friction wheel drive unit assigned to the drive wheel 6 are in control connection with a common control device, so that the friction wheel drive units drive the drive wheels 6, 8 of the wheelchair 2 according to the direction and speed of travel desired by a user of the wheelchair 2.
  • the user of the wheelchair 2 receives assistance when required in motorized driving mode.
  • the user of the wheelchair 2 can, if necessary, assemble the friction wheel drive 12 in the form of the friction wheel drive unit 16 and the further friction wheel drive unit without tools and dismantle it in a corresponding manner without tools if he wants to return to manual driving mode.
  • Fig. 2 and Fig. 3 show the friction wheel drive unit 14 in the state dismantled from the wheelchair 2.
  • locking means 22 are provided, which will be described below with reference to FIG Figures 12 to 16 are explained in more detail.
  • a carrier element 24 of the brake 10 can be seen, which is connected to the frame 4 of the wheelchair 2 by means of a clamping block 26.
  • a braking element is located on the carrier element 24 28 arranged, which is movable between an engagement position in which the braking element 28 is engaged and a disengaged position in which the braking element 28 is disengaged.
  • a receptacle 30 is formed on the carrier element 24, into which the friction wheel drive unit 16 can be inserted for mounting on the wheelchair 2 with a plug-in axle 32.
  • the carrier element 24 of the brake 10 thus forms a receptacle and an assembly point for the friction wheel drive unit 16. The assembly of the friction wheel drive unit 16 on the receptacle 30 is described below with reference to FIG Figures 12 to 16 explained in more detail.
  • FIG. 4 shows the friction wheel drive unit 16 in the mounting position on the carrier element 24.
  • FIG Fig. 4 the friction wheel drive unit 16 is shown exclusively together with the carrier element 24, while the other components of the wheelchair 2 are omitted.
  • braking element 28 can be seen, which by means of the actuating lever 14 in its braking position for braking the wheelchair 2 is in engagement with the radial outer surface of the tire of the drive wheel 8.
  • the friction wheel 18 can be seen that in the friction wheel drive position it is in engagement with the radial outer surface of the tire of the drive wheel 8.
  • the radial outer surface of both the friction wheel 18 and the braking element 28 can preferably consist of an elastomeric material.
  • the components of the friction wheel drive unit 16 are accommodated in a housing 34.
  • a locking lever 35 of the locking means 22 can also be seen, the function of which is explained in more detail below.
  • Fig. 5 shows the friction wheel drive unit 16 without the housing 34, wherein battery cells 36 can be seen which serve to feed the electric motor 20 of the friction wheel drive unit 16.
  • the battery cells 36 are rechargeable battery cells.
  • Fig. 6 shows in a perspective view a detail of the friction wheel drive unit 16 in the area of the friction wheel 18.
  • the friction wheel 18 is in rotary drive connection with the electric motor 20 such that the friction wheel 18 rotates when the output shaft of the electric motor 20 rotates and the drive wheel 8 rotates when the friction wheel drive unit 16 is in the assembly position of the wheelchair 2 rotates.
  • Figure 7A shows the actuating lever 14 in the neutral position in which both the friction wheel 18 and the braking element 28 are disengaged from the radial outer surface 38 of the drive wheel 8. In this neutral position, the wheelchair 2 can be driven manually by its user
  • Figure 7B shows the actuating lever 14 in the friction wheel drive position in which the friction wheel 18 is in engagement with the radial outer surface 38 of the drive wheel 8, so that the drive wheel 8 is driven in rotation by means of the friction wheel drive unit 16. At the same time, the braking element 28 is disengaged in the friction wheel drive position.
  • Figure 7C shows the actuating lever 14 in the braking position in which the braking element 28 is in engagement with the radial outer surface 38 of the drive wheel 8, so that the wheelchair 2 is braked. At the same time, in the braking position, the friction wheel 18 is disengaged from the radial one Outer surface 38 of drive wheel 8.
  • the actuating lever 14 is rotatably mounted about a lever axis 40 which is stationary with respect to the frame 4 of the wheelchair 2 and is in operative connection with the brake 10 (braking element 28) and the friction wheel drive 12 (friction wheel 18 of the friction wheel drive unit 16) via a lever mechanism 42, specifically in this way that in the neutral position ( Figure 7A ) Both the brake 10 and the friction wheel drive 12 are disengaged, in the friction wheel drive position (cf. Figure 7B ) the brake 10 is disengaged and the friction wheel drive 12 is engaged and in the braking position the brake 10 is engaged and the friction wheel drive 12 is disengaged (cf. Figure 7C ) is located.
  • the lever gear 42 has a first sub-gear 44 assigned to the friction wheel drive 12 and a second sub-gear 46 assigned to the brake 10.
  • the first partial transmission 42 has a two-armed first lever 48 which is rotatably mounted on the carrier element 24 and thus on the frame 4 of the wheelchair 2 about a first axis 50 which is stationary with respect to the frame 4 of the wheelchair 2.
  • One end of the two-armed first lever 48 has the receptacle 30 and thus carries the friction wheel 18 in the assembly position of the friction drive unit 16.
  • the other end of the first lever 48 is rotatable (pivot point 51) connected to one end of a first bent lever 52, the other end of which to the lever axis 40 of the actuating lever 14 eccentrically and rotatably (pivot point 49) is connected to the same.
  • the second partial transmission 44 has a one-armed second lever 54 which is rotatably mounted about a second axis 56 which is stationary with respect to the frame 4 of the wheelchair 2.
  • a The free end of the second lever 54 carries the braking element 28.
  • one end of a second bent lever 58 is rotatably connected (fulcrum 57) away from its ends, the other end rotatable (fulcrum 55) with the actuating lever 14 eccentric to it Lever axis 40 is connected.
  • the stationary lever axis 40, the stationary first axis 50 and the stationary second axis 56 are arranged on a straight line.
  • the first partial transmission 44 forms a dead center arrangement which is in the friction wheel drive position (cf. Figure 7B ) is in the dead center.
  • the second partial transmission 46 forms a dead center arrangement in a corresponding manner, which is in the braking position (cf. Figure 7C ) is in the dead center.
  • the resulting kinematics is such that when the actuating lever 14 is moved starting from the in Figure 7A neutral position shown in the direction of the in Figure 7B
  • the friction wheel drive position shown moves both the friction wheel 18 and the braking element 28 radially in the direction of the tire of the drive wheel 8.
  • the length ratios of the levers of the lever mechanism 42 are selected so that in the friction wheel drive position (cf. Figure 7B ), in which the friction wheel 18 rests radially on the tire of the drive wheel 8, the braking element 28 is still radially spaced from the tire of the drive wheel 8.
  • the actuation of both the brake 10 and the friction wheel drive 12 by means of the common actuating lever 14 enables particularly simple and intuitive operation of the wheelchair 2.
  • the braking position corresponds to the front end position of the actuating lever 14 in the direction of travel, as is the case with manually operated wheelchairs is well known without friction drive. A rethinking or relearning is therefore not necessary for a user of a conventional wheelchair.
  • the locking means 32 have a rotatably arranged on the housing 34 of the friction wheel drive unit 16 plug-in axle 32, which is connected to the locking lever 32 in a rotationally fixed manner.
  • the plug-in axle 32 has a transverse pin 60 in the region of its free end.
  • the receptacle 30 is in an outer part 62 (cf. in particular Fig. 15 ), which is rotatably arranged on an inner part 64 which is non-rotatably connected to the carrier element 24.
  • a spring 66 acts between the outer part 62 and the inner part 64.
  • Fig. 14 shows the outer part 62 in the assembled state on the inner part 64.
  • Fig. 15 shows the outer part 62 in the state dismantled from the inner part 64.
  • Fig. 16 shows the components that form the receptacle 30 in an exploded view.
  • the plug-in axle 32 is inserted into the receptacle 30 as far as it will go.
  • the rotational position of the plug-in axle 32 is predetermined by the transverse pin 60, which engages in grooves 68, 70 of the receptacle 30.
  • the plug-in axle 32 is then closed by means of the locking lever 35 in Fig. 2 Twisted counterclockwise until a projection 72 on the locking lever 35 in a recess 74 shaped complementarily to the projection 72 (cf. Fig. 12 and Fig. 13 ) engages on a sleeve 76.
  • the part of the locking lever 35 carrying the projection 72 is relative to the sleeve 76 in the axial direction of the plug axis 32 in FIG Fig. 12 spring-loaded to the left.
  • the transverse pin 60 is rotated relative to the grooves 68, 70 and thus secured against axial movement, so that in this way the friction wheel drive unit 16 is locked on the carrier element 24 and thus on the frame 4 of the wheelchair 2.
  • the spring 66 is tensioned at the same time, so that the friction wheel drive unit 16 with a measuring roller 78 rotatably mounted on the housing 34 of the friction wheel drive unit 16 is spring-loaded into engagement with the radial outer surface of the tire of the drive wheel 8 .
  • the friction wheel drive unit 16 rests against the radial outer surface of the tire on the one hand with the friction wheel 18 and on the other hand with the measuring roller 78. This ensures a defined contact between the friction wheel drive unit 16 and the tire.
  • the measuring roller 78 is in a rotary drive connection with a rotary encoder, which in turn is in signal transmission connection with a control device for controlling the friction wheel drive unit 16.
  • the speed of the drive wheel 8 can deviate from the speed specified by the friction wheel drive unit 16. If different slip would occur on the two drive wheels 6, 8, the speeds of the drive wheels 6, 8 would be different, so that despite the same speed of the friction wheel drive units assigned to the drive wheels 6, 8, the wheelchair 2 would not drive straight ahead, but rather a curve.
  • the speeds of the friction wheel drive units can be controlled or regulated independently of one another in such a way that the wheelchair 2 travels straight ahead when the user of the wheelchair 2 specifies this via an operating unit of the friction wheel drive 12.
  • any desired cornering can be implemented by appropriately different control or regulation of the rotational speeds of the friction wheel drive units 16 assigned to the drive wheels 6, 8.
  • the measuring rollers 78 enable further driving functions. Since the measuring rollers 78 are always in engagement with the tires of the drive wheels 6, 8 of the wheelchair 2, the actual speed of the drive wheels 6, 8 is also measured in the neutral position of the actuating lever 14, i.e. when the wheelchair 2 is operated manually. It is then possible, for example, for the user to accelerate the wheelchair 2 manually to a desired speed and for the speed reached to be stored by the control device. The stored desired speed can then be set and kept constant by appropriate control or regulation of the speeds of the friction wheel drive units when the user of the wheelchair switches on the friction wheel drive 12 by bringing the operating lever 14 into the friction wheel drive position.

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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)
  • Braking Arrangements (AREA)
  • Handcart (AREA)

Claims (14)

  1. Fauteuil roulant manuel (2), par exemple un fauteuil roulant à main courante, avec un cadre (4) sur lequel sont disposés des roues d'entraînement (6, 8) comprenant des pneus,
    avec un frein (10), qui peut être enclenché pour le freinage du fauteuil roulant (2) et désenclenché pour la conduite,
    avec un entraînement à roue de friction par moteur électrique (12), qui peut être enclenché pour un mode de conduite motorisé et désenclenché pour un mode de conduite manuel,
    dans lequel le frein (10) et l'entraînement à roue de friction (12) sont en interaction avec un élément d'actionnement commun pour l'enclenchement et de désenclenchement du frein (10) et de la roue de friction (12),
    dans lequel l'élément d'actionnement commun comprend un élément d'actionnement actionnable manuellement qui est conçu comme un levier d'actionnement (14),
    caractérisé en ce que
    le levier d'actionnement (14) est en interaction, par l'intermédiaire d'un mécanisme à levier (42), avec le frein (10) et l'entraînement à roue de friction (12), qui est conçu de façon à ce que
    - dans la position neutre, le frein (10) ainsi que l'entraînement à roue de friction (12) soient désenclenchés,
    - dans la position de freinage, le frein (10) soit enclenché et l'entraînement à roue de friction (12) soit désenclenché et
    - dans la position d'entraînement à roue de friction, le frein (10) soit désenclenché et l'entraînement à roue de friction (12) soit enclenché.
  2. Fauteuil roulant selon la revendication 1, caractérisé en ce que le levier d'actionnement (14) est logé de manière pivotante autour d'un axe de levier (40) fixe par rapport au cadre du fauteuil roulant (2).
  3. Fauteuil roulant selon la revendication 2, caractérisé en ce que
    la position de freinage correspond à une position finale avant dans la direction de déplacement du fauteuil roulant (2), la position neutre correspond à une position finale arrière dans la direction de déplacement du fauteuil roulant (2) et la position à roue de friction correspond à une position intermédiaire de l'élément d'actionnement.
  4. Fauteuil roulant selon l'une des revendications précédentes, caractérisé en ce que l'entraînement à roue de friction (12) comprend au moins une unité d'entraînement à roue de friction (16) qui est conçue de façon à pouvoir être montée sans outil sur le fauteuil roulant (2) respectivement démontée sans outil du fauteuil roulant (2).
  5. Fauteuil roulant selon la revendication 4, caractérisé en ce que des moyens de verrouillage (22) sont prévus pour le verrouillage de l'unité d'entraînement à roue de friction (16) dans la position de montage.
  6. Fauteuil roulant selon l'une des revendications précédentes, caractérisé en ce que le mécanisme à levier (42) comprend un premier mécanisme partiel (44) correspondant à l'entraînement à roue de friction (12) et un deuxième mécanisme partiel (46) correspondant au frein (10).
  7. Fauteuil roulant selon la revendication 6, caractérisé en ce que le premier mécanisme partiel (44) comprend un premier levier à deux bras (48) qui est logé de manière rotative autour d'un premier axe (50) fixe par rapport au cadre (4) du fauteuil roulant (2), dans lequel une extrémité du premier levier à deux bras (48) supporte, dans la position de montage de l'entraînement à roue de friction (12), une roue de friction (18) de l'entraînement à roue de friction (12) et son autre extrémité est reliée de manière rotative avec une extrémité d'un premier levier plié (52), dont l'autre extrémité est reliée, de manière rotative de façon excentrique par rapport à l'axe de levier (40) du levier d'actionnement (14), avec celui-ci et/ou en ce que le deuxième mécanisme partiel (46) comprend un deuxième levier à deux bras (54) qui est logé de manière rotative autour d'un deuxième axe (56) fixe par rapport au cadre (4) du fauteuil roulant (2), dans lequel une extrémité libre du deuxième levier (54) supporte un élément de frein (28) du frein (10) et, avec le deuxième levier (54), à distance de ses extrémités, est reliée de manière rotative une extrémité d'un deuxième levier plié (58), dont l'autre extrémité est reliée de manière rotative avec le levier d'actionnement (14), de manière excentrique par rapport à son axe de levier (40).
  8. Fauteuil roulant selon la revendication 7, caractérisé en ce que l'axe de levier fixe (40), le premier axe fixe (50) et le deuxième axe fixe (56) sont disposés sur une droite.
  9. Fauteuil roulant selon l'une des revendications 6 à 8, caractérisé en ce que le premier mécanisme partiel (44) forme une disposition de point mort qui se trouve dans la position d'entraînement à roue de friction au point mort et/ou en ce que le deuxième mécanisme partiel (46) forme une disposition de point mort qui se trouve dans la position de freinage au point mort.
  10. Fauteuil roulant selon l'une des revendications 4 à 9, caractérisé en ce que l'unité d'entraînement à roue de friction (16) comprend un rouleau de mesure (78), la position de montage de l'unité d'entraînement à roue de friction s'appuie de préférence avec un ressort contre un pneu du fauteuil roulant (2) et est en liaison d'entraînement rotatif avec un capteur rotatif, qui est en liaison de transmission de signaux avec un dispositif de commande qui est conçu et programmé de façon à ce que l'unité d'entraînement à roue de friction (14) puisse être contrôlée ou soit contrôlée en fonction de signaux de sortie du capteur rotatif.
  11. Fauteuil roulant selon la revendication 10, caractérisé en ce que le dispositif de commande est conçu et programmé de façon à ce que, à partir des signaux de sortie du capteur rotatif, la vitesse de rotation respectivement la vitesse périphérique réelle de la roue d'entraînement (8) du fauteuil roulant (2), entraînée par l'unité d'entraînement à roue de friction (16), puisse être déterminée ou soit déterminée.
  12. Fauteuil roulant selon la revendication 10 ou 11, caractérisé en ce que, à chacune des deux roues d'entraînement (6, 8) du fauteuil roulant (2), correspond une unité d'entraînement à roue de friction (16) et les capteurs rotatifs des rouleaux de mesure des unités d'entraînement à roues de friction (16) sont en liaison de transmission de signaux avec le dispositif de commande, qui est conçu et programmé de façon à ce que les deux unités d'entraînement à roues de friction (16) puissent être contrôlées ou soient contrôlées en fonction de signaux de sortie des capteurs rotatifs.
  13. Fauteuil roulant selon la revendication 12, caractérisé en ce que les vitesses de rotation des unités d'entraînement à roues de friction (16) peuvent être contrôlées ou régulées indépendamment entre elles en fonction des signaux de sortie des capteurs rotatifs des rouleaux de mesure.
  14. Fauteuil roulant selon l'une des revendications précédentes, caractérisé en ce que le frein (10) comprend un élément porteur (24) relié avec le cadre (4) du fauteuil roulant (2), sur lequel est disposé un élément de frein (28), qui est mobile entre une position d'enclenchement, dans laquelle l'élément de frein (28) est enclenché, et une position de désenclenchement, dans laquelle l'élément de frein (28) est désenclenché, dans lequel, sur l'élément porteur (24), est réalisé un logement pour le montage de l'unité d'entraînement à roue de friction (16).
EP19158262.6A 2018-03-13 2019-02-20 Fauteuil roulant Active EP3539521B1 (fr)

Applications Claiming Priority (2)

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DE102018105767 2018-03-13
DE102018129289.9A DE102018129289A1 (de) 2018-03-13 2018-11-21 Rollstuhl

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EP3539521B1 true EP3539521B1 (fr) 2021-04-07

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PL242854B1 (pl) * 2020-12-23 2023-05-02 Wheelstair Spolka Z Ograniczona Odpowiedzialnoscia Urządzenie jezdne do wózka inwalidzkiego, wózek inwalidzki do urządzenia jezdnego oraz urządzenie jezdne z wózkiem inwalidzkim
CA3208311A1 (fr) * 2021-01-15 2022-07-21 Motion Composites Inc. Support de moteur articule pour fauteuil roulant

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DE9314786U1 (de) * 1993-09-25 1994-02-10 Faß, Ruprecht, 38118 Braunschweig Abnehmbarer Antrieb für Rollstühle
GB2367274B (en) * 2000-09-27 2003-07-16 Royce Hill Husted Maneuverable power chair

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