EP1454606A1 - Faltbarer Rollstuhl - Google Patents

Faltbarer Rollstuhl Download PDF

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Publication number
EP1454606A1
EP1454606A1 EP03005074A EP03005074A EP1454606A1 EP 1454606 A1 EP1454606 A1 EP 1454606A1 EP 03005074 A EP03005074 A EP 03005074A EP 03005074 A EP03005074 A EP 03005074A EP 1454606 A1 EP1454606 A1 EP 1454606A1
Authority
EP
European Patent Office
Prior art keywords
wheelchair
folding
backrest
kinematic
seat
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.)
Withdrawn
Application number
EP03005074A
Other languages
English (en)
French (fr)
Inventor
Berto Vassilli
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.)
Vassilli SRL
Original Assignee
Vassilli SRL
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 Vassilli SRL filed Critical Vassilli SRL
Priority to EP03005074A priority Critical patent/EP1454606A1/de
Publication of EP1454606A1 publication Critical patent/EP1454606A1/de
Withdrawn legal-status Critical Current

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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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0866—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable folding down backrest, e.g. where the backrest folds down onto the seat support
    • 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
    • A61G5/1054—Large wheels, e.g. higher than the seat portion
    • 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
    • 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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet

Definitions

  • the present invention concerns the wheelchairs for disabled persons, and in particular its opening and closing kinematic mechanisms.
  • the collapsing always concerns the approaching of the tubular structures which make up the two lateral walls.
  • the way by which this collapsing can be performed is reached by different methods.
  • One way is for example that of lifting the two lateral pipes which keep the seat sheet and to move them closer at the same time.
  • Another way is that of disengaging locking mechanisms and to move the two armrests closer. In all cases, these operations must be executed not with one only hand buth with both hands, which grip two parts (generally symetrically opposed) of the wheelchair and perform the closing of this latter.
  • This invention is intended therefore to solve the above-mentioned inconveniences, by giving a solution to the closing of the wheelchair for disabled persons, which can be made even by one only hand and in practical conditions.
  • the object of this patent is characterized by what is described under claim 1.
  • the system of kinematic mechanisms which connects and moves the two bearing structures of the sides of the wheelchair is made up by two pairs of rods, like each other, at a proper distance one from the other, each pair of rods being parallel to the other, and by a central element , being parallel to the bearing structures of the sides, located next to the geometrical symmetry axis of said bearing structures.
  • This central connection is equipped on each of its ends with metal gusset plates, to which each of the ends of the equal rods of the above-mentioned couples are hinged.
  • each rod ensues to be hinged by one end to one of the bearing structures of the sides and by the other end it ensues to be hinged with one of the vanes of the gusset plate secured to the central element.
  • the set of the two bearing structures and of the central element with the four hinged rods make up two quadrilaterals, having their opposed sides arranged parallel to each other.
  • the largest width of the quadrilaterals is reached when the rods are nearly in perpendicular position to the other two sides. This is the largest width the wheelchair can reach.
  • a sliding bushing whose sliding is adjusted through two specific rods, appears to be mounted on the central element.
  • Each rod appears to be hinged on one end to one of the two wings integral with the bushing and on the other end hinged to the bearing structure of the opposed side.
  • the pushing or pulling action is applied on the rods when one of the two stanchions of the backrest is upsetted or raised from the seat.
  • the stanchions are so hinged as to form a lever with unequal arms.
  • the kinematic chain which starts from the end of the lower arm, gives motion to one of the above-mentioned rods.
  • a special reversing element is fitted in the kinematic chain.
  • Fig. 1 shows a normal wheelchair viewed from side with rings for manual movement, with a dummy on it. The kinematic mechanisms for the closing are not shown.
  • Fig. 2 shows the same wheelchair of Fig. 1 viewed from side with the backrest collapsed on the seat. Being a side view, it does not show the reduction of space occupied obtained through the closing condition.
  • Fig. 3 is an axonometric view of the wheelchair as per Fig. 1.
  • Fig. 4 shows the wheelchair as per Fig. 2 in an intermediate closing stage, connected with the backrest collapsing.
  • Fig. 5 shows the wheelchair as per Fig. 3 in its final closing stage with the completion of the backrest collapsing.
  • Fig. 6 shows schematically the bearing structure of a wheelchair side, supporting the section iron for the seat sheet and the post for the backrest sheet. It can be noticed that the backrest post appears to be hinged in an intermediate position so as to originate lower down the shortest arm of a lever. There are shown the two areas crossed by the axis for the hinging of the rods which are part of the kinematic mechanisms system for the closing of the wheelchair. Next to said areas, placed underneath, there are schematically shown the corresponding sections.
  • Fig. 7 shows schematically the bearing structure for a wheelchair side which supports the section bar for the seat sheet and the corresponding post for the backrest sheet. It can noticed that the backrest post appears to be hinged in an intermediate position, so as to originate lower down the shortest arm of a lever. There are shown the elements of the kinematic chain which, operated from the lower end of the post, transmit the motion to one of the rods of the kinematic mechanisms which control the opening (or closing) of the wheelchair. In this drawing, the post is in upright position compared to seat and the wheelchair is in open position.
  • Fig. 8 schematically shows viewed from the top the elements of the bearing structures of the sides spaced out each other having the wheelchair in opened position and the system of kinematic mechanisms of pantographic type which couple them.
  • the four identical rods with almost normal arrangement in respect to the elements belonging to the sides and hinged with one end to the said elements and with the other end hinged to the sides of the two end gussets integral with the thin central element parallel to the sides.
  • This sleeve is connected to each one of the two elements of the bearing structure of the sides by two rods each one of them having one end hinged to an element of the side and the other end is hinged on one of the two vanes of the sleeve.
  • the function of the sleeve connected with its rods to the two elements of the sides limits the translation of the central element when the opening of the wheelchair has reached its maximum opening.
  • Fig. 9 shows schematically what already shown in fig. 7 with the difference that the post of the backrest is collapsed on the structural section of the seat. In this position the wheelchair is closed.
  • the rods of the kinematic chain which transmit the movement from the lower end of the backrest post to one of the rods of the kinematic mechanism invert their function depending if they perform the folding or opening of the wheelchair taking alternatively the function of tie rods or the function of rafters.
  • Fig. 10 shows in a schematic way what already shown in fig. 8 with the difference that the structural elements of the sides of the wheelchair are now close up each other and the plates and the central element which compose the panthografic kinematism of the system appears closed up on the central part. In this situation the wheelchair appears folded.
  • Numeral 1 shows the posts of the backrest; numeral 2 a bracket which connects the section bar 3 of the seat with the bearing structure 4 of the side; numeral 5 the dummy; numeral 6 the handgrips of the posts 1; numeral 7 the fabric backrest; numeral 8 the fabric seat; numeral 9 the armrests; numeral 10 the hinging of the post 1 with the brackets 2; numeral 11.
  • numeral 19 the plates which together with the plates 18, with the structural elements 4 of the sides and of the central element 22 compose the panthografic system for the folding and opening of the wheelchair; numeral 20 the hinging axis of the ends of the plates 18 on the structural bearing elements of the sides 4; numeral 21 the hinging axis of the ends of the plates 19 on the structural bearing elements of the sides 4; numeral 24 the hinging axis of the ends of the plates 19 on the sides of the gusset 23 integral with the central element 22; numeral 25 the hinging axis of the ends of the plates 18 to the sides of the gusset 26 integral to the central element 22; numeral 27 the sleeve which wraps the central element 22 equipped with vanes 28; numeral 30 the rods which connects the sleeve 27 with the structural bearing elements of the sides 4, these rods 30 having one of the ends which is hinged

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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)
  • Seats For Vehicles (AREA)
EP03005074A 2003-03-07 2003-03-07 Faltbarer Rollstuhl Withdrawn EP1454606A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03005074A EP1454606A1 (de) 2003-03-07 2003-03-07 Faltbarer Rollstuhl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03005074A EP1454606A1 (de) 2003-03-07 2003-03-07 Faltbarer Rollstuhl

Publications (1)

Publication Number Publication Date
EP1454606A1 true EP1454606A1 (de) 2004-09-08

Family

ID=32798795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005074A Withdrawn EP1454606A1 (de) 2003-03-07 2003-03-07 Faltbarer Rollstuhl

Country Status (1)

Country Link
EP (1) EP1454606A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458168A (en) * 2008-03-08 2009-09-09 Evac & Chair Internat Ltd Collapsible wheelchair
WO2014020377A1 (en) * 2012-07-31 2014-02-06 Invacare International Sàrl Foldable wheelchair frame including a self locking device
WO2014046551A1 (en) * 2012-09-18 2014-03-27 Thompson Lafferty Design Limited A rear steer portable wheelchair
EP2799054A1 (de) * 2013-04-30 2014-11-05 Roma Medical Aids Limited Sitzgerät mit Klapprückenlehne

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712830A (en) * 1985-05-06 1987-12-15 Composites Aquitaine S.A. Folding chair comprising quick unlocking means
US5593173A (en) * 1994-11-08 1997-01-14 Quickie Designs Inc. Vertical folding wheelchair frame
DE19653324A1 (de) * 1996-09-06 1998-03-12 Matthias Bohner Rollstuhl
US6173986B1 (en) * 1999-06-07 2001-01-16 Jack Sicher Rowing arms driven wheel chair
DE10040902A1 (de) * 1999-08-19 2001-03-22 Moll Thissen Josef Zusammenklappbarer und wiederentklappbarer Stuhl, insbesondere Rollstuhl
WO2002056816A1 (en) * 2001-01-18 2002-07-25 Sunrise Medical Hhg Inc. Assistive opening and closing devices for wheelchairs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712830A (en) * 1985-05-06 1987-12-15 Composites Aquitaine S.A. Folding chair comprising quick unlocking means
US5593173A (en) * 1994-11-08 1997-01-14 Quickie Designs Inc. Vertical folding wheelchair frame
DE19653324A1 (de) * 1996-09-06 1998-03-12 Matthias Bohner Rollstuhl
US6173986B1 (en) * 1999-06-07 2001-01-16 Jack Sicher Rowing arms driven wheel chair
DE10040902A1 (de) * 1999-08-19 2001-03-22 Moll Thissen Josef Zusammenklappbarer und wiederentklappbarer Stuhl, insbesondere Rollstuhl
WO2002056816A1 (en) * 2001-01-18 2002-07-25 Sunrise Medical Hhg Inc. Assistive opening and closing devices for wheelchairs

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458168A (en) * 2008-03-08 2009-09-09 Evac & Chair Internat Ltd Collapsible wheelchair
WO2014020377A1 (en) * 2012-07-31 2014-02-06 Invacare International Sàrl Foldable wheelchair frame including a self locking device
EP3120819A1 (de) * 2012-07-31 2017-01-25 Invacare International Sàrl Rahmen für einen faltbaren rollstuhl mit einer selbstsichernden vorrichtung
US9642756B2 (en) 2012-07-31 2017-05-09 Invacare International Sarl Foldable wheelchair frame including a self locking device
WO2014046551A1 (en) * 2012-09-18 2014-03-27 Thompson Lafferty Design Limited A rear steer portable wheelchair
US9629763B2 (en) 2012-09-18 2017-04-25 Thompson Lafferty Design Limited Rear steer portable wheelchair
EP2799054A1 (de) * 2013-04-30 2014-11-05 Roma Medical Aids Limited Sitzgerät mit Klapprückenlehne
GB2513584B (en) * 2013-04-30 2017-02-01 Roma Medical Aids Ltd Seat Appliance with Folding Backrest

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