WO2001026598A1 - Fauteuil roulant - Google Patents

Fauteuil roulant Download PDF

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Publication number
WO2001026598A1
WO2001026598A1 PCT/DK2000/000575 DK0000575W WO0126598A1 WO 2001026598 A1 WO2001026598 A1 WO 2001026598A1 DK 0000575 W DK0000575 W DK 0000575W WO 0126598 A1 WO0126598 A1 WO 0126598A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
wheel
side arms
wheel chair
relative
Prior art date
Application number
PCT/DK2000/000575
Other languages
English (en)
Inventor
Henrik Haaning
Original Assignee
Invacare Rea Ab
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
Application filed by Invacare Rea Ab filed Critical Invacare Rea Ab
Priority to EP00967613A priority Critical patent/EP1223906B1/fr
Priority to DE60017277T priority patent/DE60017277T2/de
Priority to AU77725/00A priority patent/AU7772500A/en
Priority to AT00967613T priority patent/ATE286373T1/de
Publication of WO2001026598A1 publication Critical patent/WO2001026598A1/fr

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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
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
    • 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
    • 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards

Definitions

  • the present invention relates generally to the technical field of wheel chairs and wheel chair systems allowing a modification of the wheel chair to a specific individual adapta- tion of the wheel chair to specific applications or in conformity with specific purposes.
  • wheel chair structures which allow for the adjustment of the sizes of the wheels for modifying or adapting a wheel chair in relation to a specific individual or patient.
  • wheel chair structures which are of modular type are known allowing a wheel chair to be designed on the basis of a set of components belonging to a wheel chair system for adapting the wheel chair to the specific individual or patient.
  • size adjustable wheel chair structures and modular wheel chair structures are disclosed in DE 295 15 846, DE 297 04 034, EP 0 526 088, GB 2 238 275, NL 7 113 766, US 3,761 ,126, US 4,462,604, US 5,143,391 , US 5,176,393 and WO 93 08782. Reference is made to the above patent applications and patents and the above US patents are further hereby incorporated in the present specification by reference.
  • the adaptation and modification of the wheel chair is established through the adjustment of a pair of elements which at the same time provide an adjustment of the size of the wheel chair in relation to the dimensions of the wheels to be used for the wheel chair and also an adjustment of the location of the centre of gravity of the wheel chair ensuring that the centre of gravity is always located within the area covered by the wheels of the wheel chair thereby in all embodiments including any specific dimensions of wheels and any accompanying adjustment of the centre of gravity provides a stable and safe wheel chair structure.
  • the wheel chair allows for a particular wide range ability of adjustment of the position of the seat and of the back rest and further a particular large range of adjustment of the angular position of the back rest.
  • the seat may be adjusted in its longitudinal direction between two end positions varying between 26 cm and 38 cm allowing the seat to be lengthwise reposi- tioned up till 38 cm from its initial position.
  • the height of the back rest relative to the seat may be adjusted up till 25-40 cm allowing the back rest to be raised or lowered up till 40 cm in relation to the initial position of the back rest.
  • the angular position of the back rest may be adjusted between +4° and -30°as the positive angular position defines a position in which the upper edge of the back rest is tilted for- ward in relation to the vertical position of the back rest whereas the negative values of the angular position defines positions in which the upper edge of the back rest is tilted backwardly relative to the vertical position of the back rest.
  • the possibility of modifying the wheel or adjusting the wheel chair in conformity with the individual intended to use the wheel chair may be accomplished by the simple shifting of a pair of supporting elements relative to frame components of the wheel chair, still providing a safe and stable, yet easily adjustable wheel chair structure.
  • the wheel chair may be modified by accommodating rear wheels within the range 17"-24" allowing the wheel chair to be modified in relation to the user and further to be modified e.g. as the user grows from being a child to become an adult.
  • the wheel chair structure including the ability of adjustment and adaptation to a specific individual as to the dimensions of the wheel chair for complying with the physical size requirements of the individual also allows the adaptation of the wheel chair as to its components including side supports, arm rests, back head rest, feet or leg rest etc. still ensuring the combined light weight structure and ability of adjusting or adapting the wheel chair to the size of the individual using the wheel chair.
  • the wheel chair structure allows the wheel chair to be configurated in accordance with specific requirements as a set of accessory equipment may be used and easily fixated in relation to the frame or any other particular element of the wheel chair structure as the accessory equipment is provided with easy catch and locking elements allowing a swift and easy mounting and demounting of the equipment.
  • a wheel chair comprising: a frame having two side arms defining a front end and a rear end of the frame, a pair of front wheels fixated rotably and pivotably to the side arms of the frame at the front end thereof, a seat assembly having a buttocks supporting element and first fixation means for fixating the seat assembly relative to the frame, a back rest assembly having a back supporting element and second fixation means for fixating the back supporting element relative to the frame, a pair of rear wheels mounted rotably at the side arms of the frame at the rear end thereof, and a pair of wheel fixation assemblies mounted movably to the side arms of the frame for fixating the pair of rear wheels relative to the frame at respective side arms thereof so as to allow the wheels to be shifted between at least two positions along the side arms and positioning the rear wheels in corresponding
  • the rear wheels are linked to the frame of the wheel chair through a pair of wheel fixation assemblies which allow the rear wheels to be shifted between at least two positions and preferably between a number or an infinite number of positions for allowing the wheel chair to be modified and adapted to a specific individual and at the same time adjust the seat assembly including the buttocks supporting element for maintaining the buttocks supporting element in a position in which the centre of gravity of the wheel chair is always maintained within the area covered by the wheels of the wheel chair thereby providing a safe and stable wheel chair structure irrespective of the possibility of adjusting or modifying the wheel chair in relation to a specific individual constituting the intentional user of the wheel chair.
  • a wheel chair comprising: a frame having two side arms defining a front end and a rear end of the frame, a pair of front wheels fixated rotably and pivotably to the side arms of the frame at the front end thereof, a seat assembly having a buttocks supporting element and first fixation means for fixating the seat assembly relative to the frame, a back rest assembly having a back supporting element and second fixation means for fixating the back supporting element relative to the frame, a pair of rear wheels mounted rotably at the side arms of the frame at the rear end thereof, and a pair of wheel fixation assemblies mounted movably to the side arms of the frame for fixating the pair of rear wheels relative to the frame at respective side arms thereof so as to allow the wheels to be shifted between at least two positions along the side arms and positioning the rear wheels in corresponding
  • the wheel chair according to the second aspect of the present invention allows the same possibility of adjusting and modifying the wheel chair in relation to the intentional user, still maintaining a safe and reliable wheel chair structure as the back rest being connected to the wheel fixation assemblies are shifted or moved along with the rear wheels as the wheel fixation assemblies are moved between the at least two alternative positions thereby providing a safe and stable wheel chair structure still fulfilling the overall purpose of allowing the wheel chair to be modified or adjusted in relation to a specific intentional user.
  • a frame having two side arms defining a front end and a rear end of the frame, a pair of front wheels fixated rotably and pivotably to the side arms of the frame at the front end thereof, a seat assembly having a buttocks supporting element and first fixation means for fixating the seat assembly relative to the frame, a back rest assembly having a back supporting element and second fixation means for fixating the back supporting element relative to the frame, a pair of rear wheels mounted rotably at the side arms of the frame at the rear end thereof, and a pair of wheel fixation assemblies mounted movably to the side arms of the frame for fixating the pair of rear wheels relative to the frame at respective side arms thereof so as to allow the wheels to be shifted between at least two positions along the side arms and positioning the rear wheels in corresponding alternative positions, the first and second fixation means being connected to the wheel fixation assemblies at respective side arms of the frame so as to establish connection between the seat assem- bly and the back rest assembly, respectively, to the frame through the first and second fixation means and the
  • the seat assembly including the buttocks supporting element and the back rest assembly including the back supporting element are together moved or shifted along with the rear wheels as the wheel fixation assemblies are moved or shifted between the at least two positions for modifying the dimensions of the wheel chair still providing a structure in which the centre of gravity of the wheel chair is always located within the area covered by the wheels of the wheel chair.
  • terms such as up and down, front and back, lengthwise, longitu- dinal, transversal etc. always refer to the normal orientation of the wheel chair in which the wheel chair is located on a horizontal supporting surface and in which the longitudinal orientation of the wheel chair is determined from the back of the wheel chair in which the rear wheels are located to the front of the wheel chair at which the front wheels are located as the individual using the wheel chair is sitting in the wheel chair having his front facing from the rear of the wheel chair to the front of the wheel chair as in a conventional wheel chair.
  • the wheel fixation assemblies characteristic of the present invention may according to alternative embodiments be implemented in accordance with numerous alternative techniques including plate elements which are bolted onto the frame of the wheel chair by separate locking elements which are fixated by means of locks onto the wheel chair or simply by combined plate and bushing elements which are received on the side arms as the bushing elements of the wheel fixation elements are received on the side arms allowing the wheel fixation assemblies to be moved or shifted along the side arms still safely maintained on the side arms through the corporation between the side arms and the bushings of the wheel fixation assemblies.
  • the plate elements of the wheel fixation assemblies may be adapted with elements serving the purpose of locking or fixating the wheel fixation assemblies relative to the frame thereby ensuring that the wheel fixation assemblies and also the rear wheels and the seat assembly and/or the back rest assembly are safely arrested relative to the frame of the wheel chair.
  • the means for locking the wheel fixation assemblies relative to the frame of the wheel chair may comprise bolts, screws, bayonet couplings, locking pins etc.
  • the wheel fixation assemblies may further in- elude locking elements for locking the seat assembly and/or the back rest assembly relative to the wheel fixation assemblies and preferably further allow the seat assembly and/or the back rest assembly to be pivoted relative to the wheel fixation assemblies and/or removed from the wheel chair for allowing the substitution of the seat assembly and/or the back rest assembly by a different element of a different dimension or struc- ture for allowing the wheel chair to be modified for complying with the requirements of the intentional user of the wheel chair.
  • the frame of the wheel chair and/or the wheel fixation assemblies may according to alternative embodiments of the wheel chair according to the present invention be provided with locking elements for allowing additional elements such as arm rests, side supports, back head rest, leg or feet supports to be mounted on the wheel chair and fixated relative to a relevant part of the wheel chair including the frame, the wheel fixation assemblies, the seat assembly and/or the back rest assembly.
  • the additional element such as the side support or supports, the arm rest or arm rests and/or the back head rest may be provided with hook-like catching and locking elements allowing the additional elements in question to be easily mounted on and locked and fixated relative to the frame or any other element of the wheel chair thereby providing an easily adjustable wheel chair structure allowing for easy modification of the structure in accordance with specific requirements and also allowing a particular easy disassembling of the wheel chair provided the wheel chair is to be transported e.g. in a car or van.
  • the seat assembly is advantageously fixed to the frame of the wheel chair by means of locking means and is disengageable from and raisable from the frame of the wheel chair by disengaging the locking means.
  • the seat assembly is shiftable between two positions, a substantially horizontal position in which the seat assembly locks to the frame of the wheel chair and a substantially vertical position in which the seat assembly is disengaged and raisable from the frame of the wheel chair thereby allowing the seat assembly to be disconnected from and demounted in relation to the wheel chair.
  • the seat assembly further according to the above preferred embodiment of the wheel chair according to the present invention is provided with locking elements for locking the seat assembly in its substantially horizontal position thereby preventing unintentional disassembling and disconnection of the seat assembly from the frame of the wheel chair.
  • the wheel fixation assemblies are continuously movable along the side arms of the frame between two end positions and being fixable in the end positions and number of intermediate positions preferably an infinite number of intermediate positions between the end positions thereby allowing the wheel chair to be perfectly adapted and fit to the intentional user.
  • the wheel fixation assemblies which are positioned at opposite sides of the wheel chair at the side arms of the frame of the wheel chair are linked together through a transversal bar thereby providing a rigid structure of the two wheel fixation assemblies and the transversal bar and further ensuring that the two wheel fixation assemblies are always moved together and provide a symmetrical adjustment of the wheel fixation assemblies and thereby also a symmetrical adjustment of the rear wheels and the seat assembly and/or the back rest assembly relative to the frame of the wheel chair.
  • the wheel chair according to the present invention may be made from any relevant and useful materials including metal materials such as steel or aluminum or lightweight metal alloys including aluminum or titanium alloys and further relevant and useful plastics materials including fibre, e.g. carbon fibre reinforced plastics materials.
  • Fig. 1 is an overall, perspective and schematic view of a first and presently preferred embodiment of a wheel chair according to the present invention
  • Fig. 2 is a perspective and schematic view illustrating the first embodiment of the wheel chair according to the present invention also shown in fig. 1 in a disassembled state in which the wheel chair may be moved from one location to another,
  • Figs. 3a-k are elevational side views of alternative embodiments of the wheel chair according to the present invention.
  • Figs. 4a and 4b are perspective and schematic view illustrating a feature of the wheel chair according to the present invention allowing the seat assembly of the wheel chair to be easily disassembled
  • Fig 4c is a perspective and schematic view similar to the view of Fig. 4b, illustrating a feature of a modified embodiment of the wheel chair according to the present invention
  • Fig. 5a, 5b and 5c are perspective and schematic views illustrating catch and locking elements of additional components of the wheel chair allowing easy locking and disassembling of the additional elements in relation to the wheel chair.
  • Fig. 6 is a perspective and schematic view of a feet support assembly of the wheel chair according to the present invention.
  • Figs. 7a and 7b are perspective and schematic views of a pair of tilting-preventing safety wheels in an operational mode and in a concealed inoperational mode, respectively.
  • FIG. 1 an overall, perspective and schematic view of a first and presently preferred embodiment of a wheel chair according to the present invention is shown designated the reference numeral 10 in its entirety.
  • the wheel chair comprises two rear wheels or rear wheel assemblies 12 and 14 and two minor front wheels 16 and 18.
  • the rear wheels 12 and 14 each have a bearing one of which belonging to the rear wheel 14 is designated the reference numeral 20.
  • the bearing is journalled in a bearing assembly 22 which constitutes a central supporting component of the overall frame of the wheel chair 10.
  • the frame of the wheel chair 10 comprises a lower section including two arms 24 and 26 the front end of which are provided with bushings 28 and 30 in which journals- nalling pins are received which journalling pins are connected to front wheel journalling cranks 32 and 34, respectively, for receiving the front wheels 16 and 18, respectively.
  • the arms 24 and 26 are further interconnected through a transversal bar 36 which serves the purpose of establishing a rigid, H-formed lower frame section in which the arms 24 and 26 are positioned in a mutual parallel arrangement.
  • the bearing assembly 22 received on and supported by the arm 26 along with its counterpart received on and supported by the arm 24 are interconnected through a transversal bar 38 providing a rigid connection between the two bearing assemblies.
  • the bearing assembly 22 and its counterpart received on and supported by the arm 24 are mounted on the arms 24, 26 of the lower frame section allowing the bearing assemblies to be moved along the arms 24, 26 for positioning the bearing assemblies in a specific distance from the front wheels 16, 18 thereby providing the possibility of ad- justing the distance between the journals of the rear wheels 12, 14 relative to the front wheels 16, 18. It is to be understood that the bearing assemblies received on and supported by the arms 24, 26 one of which is illustrated in fig.
  • the bearing assemblies interconnected through the transversal bar 38 are fixated in their intentional position by means of preferably fixation screws or alternatively clamps, lugs, pins or the like for maintaining the bearing assemblies in a specific and fixed position in relation to the arms 24, 26.
  • the bearing assemblies described above serve, apart from journalling the rear wheels 12 and 14 relative to the arms 24, 26 of the lower section of the frame, the further purpose of maintaining a seat assembly 40 including a leg rest assembly 42 and further a back rest assembly 44 relative to the lower section of the frame including the parallel arms 24, 26 and the transversal bar 36.
  • the seat assembly 40 is generally composed of two side bars 46, 48 on which a buttocks supporting element 50 is resting constituted by a piece of leather or plastics foil.
  • the side bars 46 and 48 are interconnected by means of two transversal bars, one of which is shown in fig. 1 and designated the reference numeral 88.
  • the side bar 46 of the seat assembly 40 is further provided with a fitting 52 from which a pin 54 protrudes downwards.
  • the side bar 48 is provided with a similar fitting and pin corresponding to the fitting 52 and the pin 54 serving the same purpose as the fitting 52 and the pin 54.
  • the pin 54 is received in a bushing of the bearing assembly 22 for fixating the seat assembly 40 and also the leg rest assembly 42 and the back rest assembly 44 relative to the bearing assembly 22.
  • the above described fitting and pin of the side bar 48 of course cooperate with the bearing assembly 32 positioned and fixated to the side bar 24.
  • the fitting 52 apart from interconnecting the seat assembly 40 to the two bearing assemblies one of which is designated the reference numeral 22, serves the purpose of allowing the seat assembly 40 and also the back rest assembly 42 to be tilted relative to the bearing assemblies round a rotational axis parallel with the transversal bar 38 and extending through the fitting 52 and the additional fitting positioned at the side bar 48.
  • the fitting 52 and its counterpart at the side bar 48 may be adapted to allow the seat assembly 40 to be shifted lengthwise and arrested in a specific position as the side bars 46 and 48 may be repositioned relative to the corresponding fittings 52 thereby allowing not only a tilting of the seat assembly 40 relative to the supporting frame of the wheel chair, but also a lengthwise adjustment of the seat assembly 40 and further the back rest assembly 44 relative to the supporting frame of the wheel chair 10.
  • the wheel chair 10 further as stated above comprises a leg rest assembly 42 which is tiltable relative to the seat assembly 40 by means of hinges 56, 58 connected to the side bars 46, 48, respectively, and includes two arms 60, 62 which constitute elongatable arms allowing a feet rest 64 connected to the arms 60, 62 to be positioned at a specific distance from the seat assembly 40 for adapting the position of the feet rest 64 relative to the person to be positioned and transported by means of the wheel chair 10.
  • the back rest assembly 44 comprise two parallel side bars one of which is illustrated in fig. 1 and designated the reference numeral 66 which side bars support a back supporting element 68 similar to the buttocks supporting element 50.
  • the side bars one cf which is designated the reference numeral 66 are linked to the fittings one of which is designated the reference numeral 52 for fixating the back rest assembly 44 relative to the seat assembly 40 preferably in a fixed angular orientation relative to the seat assembly or alternatively in a tiltable orientation allowing the back rest assembly 44 to be rotated round the rotational axis of the fitting 52 relative to the seat assembly 40.
  • two handles 70 and 72 protrude upwardly and further support two side supports 74, 76, respectively.
  • a back head rest 78 protrudes upwardly.
  • the wheel chair 10 is further provided with a patient fixation element 80 positioned on the seat assembly 40, however in alternative embodiments as is illustrated in figs. 3a- 3k, the wheel chair may be implemented with arm rests, side plates, a combined side support and arm rest or alternatively without side supports and a patient fixation element 80 allowing the wheel chair to be adapted to specific applications and purposes.
  • Fig. 1 two additional elements constituting safety roller supporting arms 82 and 84 are further illustrated constituting elements well known in the art per se.
  • the wheel chair 10 is illustrated in a disassembled state in which the handles 70, 72 along with the side supports 74, 76 have been removed from the back rest assembly 44 which has further been folded onto the seat assembly 40 thereby producing a shallow assembly including the seat assembly 40 and the back rest assembly 44. Further the back head rest 78 is disassembled from the remaining elements of the wheel chair along with the wheels 12, 14.
  • Fig. 2 the lower section of the frame is further illustrated in the top part of the draw- ings presenting the arms 24, 26 together with the bearing assemblies 22 and the additional bearing assembly fixated to the arm 24 which bearing element is designated the reference numeral 22'.
  • the bearing assemblies 22 and 22' are as illustrated in Fig. 2 interconnected by the transversal bar 38 and the safety roller supporting arms 82 and 84 are illustrated in positions in which they are folded down into positions parallel with the transversal bar 38.
  • the ability of the wheel chair 10 allowing the seat assembly 40 to be raised and lowered and further shifted lengthwise in relation to the frame of the wheel chair and further the ability of the back rest assembly 44 to be tilted in relation to the seat assembly 40 allows an extreme wide-ranging adjustability of the wheel chair as the seat assembly 40 may be shifted lengthwise in relation to an initial position up to 26- 38 cm allowing the seat assembly to be positioned in relation to the frame for accomo- dating different size of rear wheels and further allowing the position of the seat assembly 40 to be adjusted in relation to a specific user.
  • back rest assembly 44 may be raised or lowered up to 45-40 cm and tilted forward from a horizontal position up to 4° and lowered or tilted backwards until a position of 30° in relation to the vertical orientation is obtained.
  • the feature of easy disassembling of the wheel chair is further illustrated in the detail of figs. 4a and 4b illustrating the locking of the seat assembly 40 relative to the frame.
  • Figs. 3a-3k various alternative embodiments or implementations of wheel chairs including the bearing assembly characteristic of the present invention allowing the easy adjustment of the positions of the rear wheels relative to the front wheels and further the one point fixation of the seat assembly and further the back rest assembly relative to the wheel supporting lower section of the wheel chair frame.
  • the various embodiments of the wheel chair may be implemented with additional or supplementary elements improving the comfort of the wheel chair or adapting the wheel chair to a specific individual taking into due consideration the state of health and dis- ableness of the individual or patient.
  • the concept of providing a simple side element interconnecting the wheel supporting frame and the seat rest and optionally also the back rest allows a stable wheel chair to be produced from a minimum number of components and providing a light weight and elegant, still stable and rigid wheel chair structure.
  • the seat assembly 40 and the back rest assembly 44 connected to the seat assembly 40 are easily disconnected from the wheel chair allowing an easy demounting and disassembling of the wheel chair or in the alternative a swift and easy mounting of the seat assembly 40 and along therewith also the back rest assembly 44.
  • figs. 4a and 4b a detail of the wheel assembly 22 and specific details of the seat assembly 40 are shown illustrating the above easy disassembling feature of the wheel chair.
  • the elements illustrated in figs. 4a and 4b previously described above with reference to figs. 1 and 2 are designated the same reference numerals as above.
  • the transversal bar 38 of the wheel assembly 22 is shown along with the arm 26 of the frame of the wheel chair.
  • the transversal bar 38 is provided with an enlarged part 92 from which two plate elements 94 and 96 extend upwardly which plate elements support a transversal pin 98 shown in fig. 4b.
  • two transversal bars 88 and 90 extend to the opposite side bar 46.
  • the transversal bar 88 constitutes a front transversal bar
  • the transversal bar 90 constitutes a rear transversal bar which is hidden in fig. 1 whereas the front transversal bar 88 is disclosed in fig. 1.
  • an arm 100 extends rearwardly to a catch or lock 102.
  • the arm 100 centrally comprises a handle 106 which is provided with inner threads in which two threaded pins 108 and 110 are received so as to allow the length of the arm 100 to be adjusted through rotating the handle 106 relative to the pins 108 and 110 thereby causing the length of the arm 100 to be elongated or shortened by turning the handle 106 in the one direction or alternatively in the opposite direction.
  • the specific position of the arm 100 which fixates the seat assembly 40 relative to the frame and also defines the orientation of tilt of the seat assembly 40 relative to the frame is set and maintained by means of two counter nots 112 and 114.
  • the catch or lock 102 comprises a bifurcated element which is adapted to be received between the two plate elements 94 and 96 and has a central recess 118 illustrated in fig. 4b for cooperating with the transversal pin 98.
  • the catch or lock further comprises a locking element 116 which is rotatably received within the bifurcated element 102 and has a locking plate which is rotably disengagable from a position below the transversal pin 98 through depressing the locking element 116 from the position shown in fig. 4a causing the catch or lock to be shifted from being engaged in its locking engagement with the transversal pin 98 of the enlarged part 92 of the transversal bar 38 to be disengaged from its locking engagement with the transversal pin 98.
  • the seat assembly 40 may be rotated from its substantially horizontal po- sition shown in fig. 4a to a vertical position shown in fig. 4b in which the seat assembly is released or disengaged from the frame of the wheel chair.
  • the seat assembly 40 is provided with a rotation pin 120 which is journalled in a claw 122, 124 of the pin 54 as the pin 120 is provided with a reduced width in the orientation parallel with the side bars 46 and 48 allowing the pin 120 to be disengaged from the claws 122, 124 in the vertical position shown in fig.
  • the arm 100 is locked to two side plates one of which is shown in figs. 4a and 4b and designated the reference numeral 126 by means of a wire 128.
  • the plate 126 having a counterpart at the opposite side bar 46 supports the pin 120.
  • Fig. 4c a modified structure of the fixation of the seat assembly relative to the side bars of the wheel chair and the fixation of the wheel bearings relative to the side bars is shown.
  • elements or components identical to elements or components described above are designated the same reference numerals and elements or components fulfilling the same purpose as elements or components described above, however slightly modified, are designated the same integer as the element or component previously described, however added an indication, such as a mark for identifying the difference.
  • a mark for identifying the difference is Generally, only components differing from the previously described components and elements not present in the above-described embodiment are given a specific discussion.
  • Fig. 4c the left-hand side bar 26' of the wheel chair is shown on which the bearing assembly 22' is mounted.
  • the bearing 20 of the left-hand rear wheel is mounted on the bearing assembly 22'.
  • the bearing 20 is mounted and fixated by means of a nut 23 cooperating with a thread 21 of the bearing 20.
  • the bearing assembly 22' comprises a bracket 25 on which a bar 152 of the seat assembly is fixated by means of a pair of nuts 154 and 156, as the bar 152 is provided with a plurality of through-going holes for allowing the position of the bar 152 to be adjusted relative to the bracket 25 and in doing so, allowing the height of the seat assembly to be adjusted relative to the supporting ground and allowing an overall adjusting of the position of the seat assembly relative to the size if the wheel mounted on the bearing assembly 22'.
  • the bar 152 is at its lower end connected to a transversal bar 38' and at its top end through a crank connected to a plate 158, to which a substantially L-shaped profiled element 160 is bolted which further co-operates with a profiled component 162 of the seat assembly.
  • the profiled component has a bottom groove for receiving the head of a bolt for fixating the profiled component relative to the L-shaped component 162.
  • the component 162 is connected to a transversal plate part 90' and further connected to a horizontal bar 164 constituting a side bar of the seat assembly.
  • the side bar 164 is welded to or otherwise rigidly fixated to a vertical bar 166 constituting a supporting component of the back rest assembly and is at its front end connected to a solid block 168 to which a further transversal plate part 88' is mounted and fixated.
  • the structure shown in Fig. 4c generally allows for a more flexible adjustment of the position of the seat and the back rest of the wheel chair relative to the size of the rear wheels by the provisions of the height adjustable positioning of the bar 152 relative to the bracket 25 and the possibility of positioning the component 162 relative to the L- shaped component 160.
  • the structure shown in Fig. 4c prevents the back rest from being shifted to a position behind the horizontal axes defined by the bearings of the rear wheels and thereby prevents the wheel chair from being adjusted into a hazardous or dangerous configuration.
  • a locking system is shown allowing an additional element such as a side support, an arm rest a back head rest or any additional element to be fixated and locked relative to the frame of the wheel chair or to the seat or back rest assemblies of the wheel chair.
  • the lock is shown designated the reference numeral 130 in its entirety comprising two claw parts 132 and 134 which are interconnected by means of a through-going pin 136 and engaged by means of a spring 138 attempting to press the two parts 132 and 134 apart.
  • the locking part 132 is pivotably connected to a handle 140 comprising a plate element 142 and an eccentric actuator element 144 which coop- erates with a circular cylindrical wall part of the claw part 132.
  • the handle 140 As the handle 140 is swung from its position shown in figs. 5a and 5b in which the plate element 142 is positioned juxtaposed the two claw parts 132 and 134 causing the claw parts to be pressed towards one another and towards an open position, the claw part 132 is allowed to move away from the part 134 thereby causing the two claw parts 132 and 134 to be separated.
  • the locking element 130 may according to two alternative applications be used in connection with a further fixation element 150 in which the claw part 134 engages and causes the material of the locking element 150 to be slightly deformed and pressed against the arm or tubular element such as the arm 26 of the frame as illustrated in fig. 5b.
  • two parallel locks 130 may be used for catching and locking in relation to a hollow tubular element or arm 26' which is provided with a through-going recess 27' for allowing the claw part 134 of the lock 130 to engage and fixate the lock relative to the arm or tubular 26'.
  • a further plate element or pin 150 is shown which is connected to and supported by the two locks 130 and is fixated relative to the tubular element or arm 26' as the locks are caused to press round the tubular element 26' for fixating the locks 130 and thereby also the plate 150 relative to the tubular element or arm 26'.
  • a modified embodiment of the leg rest assembly 42' is shown.
  • the leg rest assembly 42 is of a structure comprising two supporting arms 60 and 62, as the leg rest assembly 42' shown in Fig. 6 includes a single supporting arm 60', which is received within a fitting 61 and a front transversal bar 70 of the seat assembly, which front transversal bar 170 is also shown in Fig. 4c.
  • the arm 60' may be lengthwise adjusted and supports two individual feet rest plates 64 ⁇ and 64 2 for supporting the right and the left foot of the patient, respectively. As it is indicated in Fig.
  • the two feet sup- porting plates 64 ⁇ and 64 2 may be individually tilted and raised or lowered relative to the common arm 60' for adjusting the position of the feet supporting plates 64 ⁇ and 64 2 individually and also allowing the feet supporting plates 64 ⁇ and 64 2 to be tilted relative to one another and relative to the supporting arm 60'.
  • the feet supporting plates 64 ⁇ and 64 2 are rotably connected to a bushing 63 which is mounted on the arm 60' for allowing the above-described individual adjustment of the feet supporting plates 64 ⁇ and 64 2 relative to the supporting bushing and thereby relative to the arm 60.
  • Figs. 7a and 7b a particularly relevant feature of the wheel chair is shown, as the wheel chair is preferably and advantageously provided with a pair of safety wheel sup- porting arms which are mounted at the rear wheels of the wheel chair.
  • the left- hand rear wheel 14' is shown along with the left-hand side bar 26' and the left-hand bearing assembly 22'.
  • the remaining components of the wheel fixation and also the seat and back rest assemblies are omitted for clarity.
  • the safety wheel supporting arm shown in Fig. 7a and 7b includes a basically U-shaped plate component 170 which is rigidly connected to the wheel chair and fixated to the bearing of the rear wheel 14, such as by means of the through-going bolt 21 shown in Fig. 4c.
  • the U-shaped plate 170 supports a tiltable arm 172.
  • the arm 172 has its lower end positioned just above the supporting surface and positions a safety or security rear wheel 144 in a position behind the transversal axes of the two rear wheel bearings.
  • the arm 172 may be tilted or swung from the operational position or mode shown in Fig. 7a to a hidden or inoperable position shown in Fig. 7b by simply swinging the arm 172 to a position parallel with and positioned behind the back rest and below the seat of the wheel chair.
  • the arm 172 is, as is evident from Fig.
  • a similar or second security or safety wheel supporting arm assembly is used at the right hand rear wheel and is swung to the opposite side in the inoperational mode or position, positioned parallel with the arm 172 shown in Fig. 7b.
  • the arm 172 is, as is illustrated in Figs. 7a and 7b, of a two part structure having a inner and an outer tubular part for allowing the arm 172 to be lengthwise adjusted for adjusting the overall length of the position of the wheel 174 relative to the size and the position of the rear wheels, such as the rear wheel 14' shown in Figs. 7a and 7b.

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Prostheses (AREA)
  • Handcart (AREA)

Abstract

L'invention porte sur un fauteuil roulant comprenant un cadre constitué de deux bras latéraux ; d'un paire de roues avant fixées rotatives et pivotant par rapport aux bras latéraux ; un ensemble siège pourvu d'un élément supportant les fesses et un premier dispositif de fixation destiné à fixer l'ensemble siège par rapport au cadre ; d'un ensemble dossier doté d'un élément soutenant le dos et d'un second élément de fixation pour fixer l'élément soutenant le dos par rapport au cadre ; d'une paire de roues arrière montées rotatives au niveau des bras latéraux du cadre et d'une paire d'ensembles de fixation des roues montés amovibles par rapport aux bras latéraux du cadre. L'ensemble de fixation des roues fixe les roues arrière par rapport au cadre au niveau des bras latéraux respectifs, ce qui permet aux roues de se décaler entre au moins deux positions le long des bras latéraux et de positionner les roues arrière dans des positions alternatives correspondantes. Les premier et/ou second dispositifs de fixation sont raccordés aux ensembles de fixation des roues pour établir une connexion entre l'ensemble siège et/ou l'ensemble dossier, respectivement, par rapport au cadre et permettre à l'un ou l'autre de ces ensembles, ou aux deux, de se décaler le long de l'ensemble de fixation des roues entre au moins deux positions par rapport aux bras latéraux. Le but de cette invention est de conférer également à ce fauteuil roulant une structure élégante et légère, facilement interchangeable, et dans laquelle l'emplacement du centre de gravité du fauteuil est toujours situé dans la zone recouverte par les roues, assurant ainsi une structure stable et sûre.
PCT/DK2000/000575 1999-10-11 2000-10-11 Fauteuil roulant WO2001026598A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00967613A EP1223906B1 (fr) 1999-10-11 2000-10-11 Fauteuil roulant
DE60017277T DE60017277T2 (de) 1999-10-11 2000-10-11 Rollstuhl
AU77725/00A AU7772500A (en) 1999-10-11 2000-10-11 A wheel chair
AT00967613T ATE286373T1 (de) 1999-10-11 2000-10-11 Rollstuhl

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99610064A EP1116480A1 (fr) 1999-10-11 1999-10-11 Fauteuil roulant
EP99610064.0 1999-10-11

Publications (1)

Publication Number Publication Date
WO2001026598A1 true WO2001026598A1 (fr) 2001-04-19

Family

ID=8242564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2000/000575 WO2001026598A1 (fr) 1999-10-11 2000-10-11 Fauteuil roulant

Country Status (5)

Country Link
EP (2) EP1116480A1 (fr)
AT (1) ATE286373T1 (fr)
AU (1) AU7772500A (fr)
DE (1) DE60017277T2 (fr)
WO (1) WO2001026598A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2008541C2 (en) * 2012-03-27 2013-09-30 Univ Delft Tech Adjustable wheelchair and method for adjusting said adjustable wheelchair, and wheelchair assembly.

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880798B1 (fr) * 2005-01-14 2007-04-13 Dupont Medical Sa Fauteuil roulant
US8490994B2 (en) 2007-12-21 2013-07-23 Sunrise Medical Gmbh & Co. Kg Wheelchair frame and wheelchair with cross-brace
ATE496605T1 (de) 2008-10-10 2011-02-15 Sunrise Medical Gmbh & Co Kg ROLLSTUHL MIT FUßSTÜTZE
EP2704918A2 (fr) 2011-05-04 2014-03-12 ELMOS Semiconductor AG Procédé pour détecter un milieu de volume déterminable et transférable d'une première unité à une deuxième unité
CN112569061B (zh) * 2020-12-08 2023-04-28 郑州大学第一附属医院 一种泌尿科患者术后康复用可调节高度的理疗椅及其使用方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7113766A (fr) 1970-10-09 1972-04-11
US3761126A (en) 1972-03-01 1973-09-25 L Mulholland Adjustable chair for children with cerebral palsy
US4462604A (en) 1981-05-18 1984-07-31 Valutec Ag Size-adjustable erecting wheelchair
GB2238275A (en) 1989-11-24 1991-05-29 E W Marshall & Son Ltd Adjustable wheel chair
US5143391A (en) * 1990-04-27 1992-09-01 Medical Composite Technology Modular wheelchair
US5176393A (en) 1990-04-27 1993-01-05 Medical Composite Technology Modular wheelchair
EP0526088A1 (fr) 1991-07-23 1993-02-03 TZORA FURNITURE INDUSTRIES Ltd. Chaises roulantes
WO1993008782A1 (fr) * 1991-11-08 1993-05-13 Medical Composite Technology Fauteuil roulant et cadre de fauteuil roulant
DE29515846U1 (de) 1995-10-06 1995-12-07 Mahlmeister, Georg, 97215 Uffenheim Fahrbares Sitzschalenuntergestell
DE29704034U1 (de) 1997-03-06 1997-07-24 Sopur Medizintechnik GmbH, 69254 Malsch Rollstuhl

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7113766A (fr) 1970-10-09 1972-04-11
US3761126A (en) 1972-03-01 1973-09-25 L Mulholland Adjustable chair for children with cerebral palsy
US4462604A (en) 1981-05-18 1984-07-31 Valutec Ag Size-adjustable erecting wheelchair
GB2238275A (en) 1989-11-24 1991-05-29 E W Marshall & Son Ltd Adjustable wheel chair
US5143391A (en) * 1990-04-27 1992-09-01 Medical Composite Technology Modular wheelchair
US5176393A (en) 1990-04-27 1993-01-05 Medical Composite Technology Modular wheelchair
EP0526088A1 (fr) 1991-07-23 1993-02-03 TZORA FURNITURE INDUSTRIES Ltd. Chaises roulantes
WO1993008782A1 (fr) * 1991-11-08 1993-05-13 Medical Composite Technology Fauteuil roulant et cadre de fauteuil roulant
DE29515846U1 (de) 1995-10-06 1995-12-07 Mahlmeister, Georg, 97215 Uffenheim Fahrbares Sitzschalenuntergestell
DE29704034U1 (de) 1997-03-06 1997-07-24 Sopur Medizintechnik GmbH, 69254 Malsch Rollstuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2008541C2 (en) * 2012-03-27 2013-09-30 Univ Delft Tech Adjustable wheelchair and method for adjusting said adjustable wheelchair, and wheelchair assembly.
WO2013147601A1 (fr) 2012-03-27 2013-10-03 Technische Universiteit Delft Fauteuil roulant réglable, procédé de réglage dudit fauteuil roulant et ensemble fauteuil roulant

Also Published As

Publication number Publication date
EP1223906B1 (fr) 2005-01-05
AU7772500A (en) 2001-04-23
EP1223906A1 (fr) 2002-07-24
EP1116480A1 (fr) 2001-07-18
DE60017277D1 (de) 2005-02-10
ATE286373T1 (de) 2005-01-15
DE60017277T2 (de) 2005-12-08

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