EP0977533A1 - Mecanisme ameliore permettant a des sieges de se soulever - Google Patents

Mecanisme ameliore permettant a des sieges de se soulever

Info

Publication number
EP0977533A1
EP0977533A1 EP98922931A EP98922931A EP0977533A1 EP 0977533 A1 EP0977533 A1 EP 0977533A1 EP 98922931 A EP98922931 A EP 98922931A EP 98922931 A EP98922931 A EP 98922931A EP 0977533 A1 EP0977533 A1 EP 0977533A1
Authority
EP
European Patent Office
Prior art keywords
seat
assembly
footrest
backrest
chassis
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Withdrawn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
EP98922931A
Other languages
German (de)
English (en)
Inventor
Karl Wingett Smith
Michael John Billington
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.)
Individual
Original Assignee
Individual
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 GBGB9710659.5A external-priority patent/GB9710659D0/en
Application filed by Individual filed Critical Individual
Publication of EP0977533A1 publication Critical patent/EP0977533A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A61G5/14—Standing-up or sitting-down aids
    • 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
    • A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds

Definitions

  • GB 2266838 describes an articulated body support assembly, comprising essentially a seat, leg support panel and footrest, all hinged together at adjacent edges.
  • any or all panels - particularly the leg support panel - may be replaced with link means with or without rigid or flexible coverings.
  • These means together with the footrest, backrest and armrests may also be jointly or separately adjustable to confer additionally elevated leg support and /or reclining feature. This feature may also optionally afford full length support in stretcher/bed form.
  • the footrest(s) may be reduced to simple bar structure which may be articulated or rigid.
  • the whole mechanism in whatever form is essentially mounted upon a chassis structure which may constitute a chair (wheeled or static, rigid or folding), toilet frame, commode or alternatively form part of an ambulance or other vehicle for the transport of the infirm.
  • a chassis structure which may constitute a chair (wheeled or static, rigid or folding), toilet frame, commode or alternatively form part of an ambulance or other vehicle for the transport of the infirm.
  • a backrest with or without attached armrests may be attached on or near the rear of the seat component so as to rise and fall with the seat thereby affording back support and user safety throughout the range of motion.
  • Armrests may be alternatively part of the base frame - in which case they will not move with the seat - or be attached to the seat at points other than those used for backrest attachment. This latter feature enables armrest elevation to differ from backrest elevation.
  • the backrest is preferably, but not essentially, constrained to maintain a near constant attitude to the floor datum throughout its travel while elevating (and lowering), this is achieved by use of
  • RECTIFIED SHEET (RULE 91) appropriate guide means within the framework.
  • suitable guide means are parallel linkages or guided sliders.
  • Stand-Easy Chairs in which the seat and, in some instance, other parts rotate, rise and tilt to assist impaired mobility are well known; many are powered by electric actuators requiring trailing cables etc, others utilise spring means which require adjustment to suit user weight variations. Stand-Easy differs from these in requiring no external power source or adjustments. Stand-Easy mechanisms are thus more suited to situations where an excess of cables might constitute a safety hazard, or where electrical supplies are not readily available (such as wheelchairs, etc) and where there may be more then one user
  • the fundamental principal of operation requires that the assembly of seat, foot support(s) and their link means are mounted on a horizontal transverse pivotal axis set in a floor-standing or wheeled framework.
  • the transverse axis is necessarily set back from the forward edge of the seat.
  • the footrest(s) When the seat is in its "sitting" position the footrest(s) are necessarily raised above floor level.
  • leaning forward and/or pressing down on the footrest and/or armrests if fixed and non-elevating not only causes a forward weight shift but also creates torque to rotate the seat so raising its rear.
  • the further options include "fixed back” or “elevating back” seats, fixed or elevating armrests, reclining backs, elevating leg supports, etc
  • a reclining back feature can be combined with an elevating legrest as in Figure 8 or the two components can be designed to function separately Suitable adjustment means include variable length parallel link(s) for which purpose lockable gas struts are ideal.
  • Other well known means include screw and nut, lockable ratchet, slider/clamp, etc.
  • armrests are fitted to either the backrest or some other attachment to the seat to the rear of the main transverse pivotal axis they will rise and fall with the rear of the seat; use of parallel connecting links or other guide means can ensure that the armrests maintain an essentially constant attitude in relation to the floor datum. This is not a common feature in such seating but, together with the similarly-moving backrest it affords unique support, both physical and mental, for the infirm.
  • damper means be incorporated into the mechanism which can become dynamically unstable in transition due to the variation of input force and resistance throughout.
  • the seat should also be lockable in its "horizontal" position lest unsolicited transition be initiated by the occupant leaning forward.
  • This lock or latch should preferably be of self-latching type.
  • a further feature enables use as a high seat, the footrest(s) being designed to fold away.
  • Figure 1 shows the essential components in the sitting position
  • Figure 2 shows the effect of rotation to the erected state in which the footrest has reached floor level.
  • the preferred angular rotation can be determined by geometry variation.
  • Figures 3 and 4 show similar transitions of a seat equipped with backrest and elevating armrests. Attitude of backrest and armrests is determined by geometry of the parallel link(s) shown.
  • Figure 5 identifies the minimum components: a seat (1) rotates about a transverse pivotal axis (4) having attached at or near its forward edge a footrest(s) (2) by link means (3).
  • link (3) in hinged to the seat and constrained to move in a predetermined path by further links (5), all being incorporated within a framework.
  • Figure 7 illustrates the footrest fold feature enabling use as a high seat.
  • FIG. 8 illustrates the optional recline feature in which a backrest (6) and leg support (10) are joined together by a link (7) secured in any intermediate position by a clamp (9).
  • Link 7 may by design comprise two independent components, one linking the backrest to the frame in a position approximating to clamp 9, by use of lockable gas strut or other variable length means the backrest inclination can be varied in use.
  • Leg support 10 is itself an option; variable length link means corresponding to the forward part of link 7 shown enables variation independent of backrest attitude. The feasibility exists to incorporate leg support 10 with footrest link(s) 3 and/or rotation of footrest 2 to extend the physical length of legrest available.
  • Figure 9 illustrates the essential components mounted within a rudimentary floor standing framework. For safety reasons it is not recommended that this simple variant be used without a backrest unless backed by a solid wall.

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

Abstract

Selon cette invention, un siège pivote autour d'un axe horizontal transversal reculé par rapport au bord antérieur. Un repose-pied est fixé par des attaches appropriées, ou d'autres éléments, à un point ou plusieurs points adjacents du bord antérieur du siège. Lorsque le siège est à l'horizontale, le repose-pieds est relevé au-dessus du niveau du sol. Lorsque le siège tourne autour de son axe, le repose-pieds descend sur le sol au fur et à mesure que l'arrière du siège se soulève et ce, afin d'aider l'utilisateur à se lever. Un tel déplacement dépend d'un ou de plusieurs des éléments suivants, à savoir, (i) que le moment résulte du poids de l'occupant réparti sur le siège; (ii) qu'une partie du poids de l'occupant agit sur le repose-pied; (iii) qu'une force nette, applicable seulement au déplacement des accoudoirs, s'applique aux accoudoirs; et (iv) qu'un utilisateur applique une force d'entrée supplémentaire. Le siège peut être équipé d'un dossier ainsi que de bras fixes ou amovibles. Ce dossier peut éventuellement être incliné ou, selon un mode de réalisation, lié à un repose-jambes ou à une adaptation du repose-pieds qui se soulève. Selon un autre mode de réalisation, des mécanismes indépendants de soutien des jambes peuvent être préférés. Ce mécanisme est également adapté à une utilisation avec un actionneur motorisé. La totalité de l'ensemble doit systématiquement être fixée dans un cadre approprié qui peut être statique ou à roulettes, rigide ou pliable, et ce, dans le but de servir de chaise, de cadre d'appui pour toilette, de chaise percée, de siège roulant ou de toute autre forme de siège, ou bien, lorsque les possibilités d'ajustement et de mouvements sont suffisantes, de lit, de civière et/ou de fauteuil permettant de verticaliser l'utilisateur.
EP98922931A 1997-05-24 1998-05-21 Mecanisme ameliore permettant a des sieges de se soulever Withdrawn EP0977533A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9710659 1997-05-24
GBGB9710659.5A GB9710659D0 (en) 1997-05-24 1997-05-24 "Stand-easy 2"-An improved mechanism for elevating seats
GB9803727A GB2326823A (en) 1997-05-24 1998-02-23 Elevating seat
GB9803727 1998-02-23
PCT/GB1998/001472 WO1998052509A1 (fr) 1997-05-24 1998-05-21 Mecanisme ameliore permettant a des sieges de se soulever

Publications (1)

Publication Number Publication Date
EP0977533A1 true EP0977533A1 (fr) 2000-02-09

Family

ID=26311579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98922931A Withdrawn EP0977533A1 (fr) 1997-05-24 1998-05-21 Mecanisme ameliore permettant a des sieges de se soulever

Country Status (3)

Country Link
EP (1) EP0977533A1 (fr)
AU (1) AU7539298A (fr)
WO (1) WO1998052509A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19926511A1 (de) * 1999-06-10 2000-12-14 Herbert Brustmann Fahrbarer Stuhl
WO2009010600A1 (fr) 2007-07-19 2009-01-22 Fundacion Tekniker Chaise roulante
AT509317B1 (de) 2010-05-20 2011-08-15 Camarg Og Sitzmöbel
ES2736962A1 (es) * 2018-07-03 2020-01-09 Diaz Miguel Angel Vega Asiento compensado

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2109676B (en) * 1981-11-21 1985-06-19 Norman Henry Gale Device for assisting invalids to stand
EP0558858A1 (fr) * 1992-03-02 1993-09-08 Noel Bessiere Fauteuil transformable en lit brancard
GB9209372D0 (en) 1992-04-30 1992-06-17 Smith Karl W "stand-easy",(a lifting chair for static and wheeled use by the infirm)
AU691176B2 (en) * 1993-04-06 1998-05-14 Lyfta Chair Co. Limited A chair
WO1995011656A1 (fr) * 1993-10-28 1995-05-04 Karl Wingett Smith Fauteuil a siege inclinable utilise par des personnes infirmes comme fauteuil fixe ou roulant
GB2307213A (en) * 1995-11-18 1997-05-21 Robert Hester Transfer system for persons

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9852509A1 *

Also Published As

Publication number Publication date
WO1998052509A1 (fr) 1998-11-26
AU7539298A (en) 1998-12-11

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Legal Events

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