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EP2175821B1 - Unité de redressement pour fauteuils roulants et chaises, en particulier chaises thérapeutiques - Google Patents

Unité de redressement pour fauteuils roulants et chaises, en particulier chaises thérapeutiques Download PDF

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Publication number
EP2175821B1
EP2175821B1 EP08748353.3A EP08748353A EP2175821B1 EP 2175821 B1 EP2175821 B1 EP 2175821B1 EP 08748353 A EP08748353 A EP 08748353A EP 2175821 B1 EP2175821 B1 EP 2175821B1
Authority
EP
European Patent Office
Prior art keywords
lever
stand
parallelogram
support
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.)
Not-in-force
Application number
EP08748353.3A
Other languages
German (de)
English (en)
Other versions
EP2175821A1 (fr
Inventor
Kurt Hunziker
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.)
Levo AG Wohlen
Original Assignee
Levo AG Wohlen
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 Levo AG Wohlen filed Critical Levo AG Wohlen
Publication of EP2175821A1 publication Critical patent/EP2175821A1/fr
Application granted granted Critical
Publication of EP2175821B1 publication Critical patent/EP2175821B1/fr
Not-in-force 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
    • A61G5/10—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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/74—General characteristics of devices with special adaptations, e.g. for safety or comfort for anti-shear when adjusting furniture

Definitions

  • the invention relates to a Clothingrichtmati with a support and hinged to the support
  • Aufrichtgestell having a seat support carrying a seat, a backrest support which carries a backrest, a first lever parallelogram to the backrest both in the sitting position and in the standing position of the User to maintain upright, and means for moving from the sitting position, the standing position, the backrest to the rear end of the seat when a change from the sitting position, the first lever parallelogram having a first double-armed parallelogram lever.
  • Such erecting units are used, for example, in raising wheelchairs and therapy chairs.
  • the DE 26 25 046 describes a Aufrichtstuhl, which can also serve as a therapy chair. It has a curve that is adaptable to the patient's ideal righting movements. Together with a guide link and a limit lever, this curve controls and limits the raising movement of the seat and backrest.
  • the aim of this mechanism was to create virtually no relative movement between the user's body and the chair surface. However, this goal was not achieved by the mechanism described, because the axis of rotation between the backrest and seat is arranged at a relatively large distance from the hip joint of the chair user. Furthermore, the use of cams has the disadvantage that they are subject to great wear during operation.
  • the EP 0146 660 shows a Aufrichtrollstuhl which has a chassis with an upright hinged thereto.
  • the erecting frame has a seat support with a backrest support.
  • a first and a second lever parallelogram is provided.
  • the first lever parallelogram maintains the backrest support both in the sitting and standing position of the user.
  • the second lever parallelogram is used to lower the footrest.
  • the first lever parallelogram has a double-armed parallelogram lever, of which one arm forms part of the second lever parallelogram.
  • this upright wheelchair makes use of the lowering of the footrest, like virtually all of the roll-up wheelchairs proposed in the last 30 years.
  • the erecting unit should allow the user to stand upright and provide him with a secure hold even in this position.
  • the armrest height should be both in sitting and standing position in a comfortable for the chair user situation.
  • the erecting unit should have the lowest possible weight.
  • the first lever parallelogram has a second double-armed Parallelogrammhebel that the arms of the two double-armed Parallelogrammhebel with two other levers form a second lever parallelogram, that the common fulcrum of the two lever parallelograms on a lever is pivotally connected to a first location of the footrest and that the common pivot point of said further lever of the second parallelogram is pivotally connected to a second location of the footrest.
  • the erecting unit according to the invention, virtually no relative movements take place between the user's body and the seat during erection, because during erection the seat is raised. That the footrest when changing from the Sitting position in the standing position does not have to be lowered, is particularly advantageous when using the Aufrichtü in Aufrichtrollstühlen. There, the footrest in the sitting position can be arranged relatively low, so that the wheelchair users are not much higher sits as a normal chair user, which is particularly beneficial when eating or working at a table.
  • the erecting frame is articulated not on pivotable members but on a stationary support, as is the case with most elevating wheelchairs. This has the advantage that further measures, such as weights on such pivotable members, are not necessary, and thus the total weight of the erecting unit can be kept small.
  • the footrest can be flat to the floor.
  • the footrest can also be omitted.
  • the support is expediently designed to be height-adjustable in order to permit adaptation to the user.
  • Another advantage is that when erecting the legs of the chair wearer are not strongly pressed against the knee brackets. The knee holder therefore needs no mechanism to prevent this.
  • Another advantage of the invention is that the erecting frame is suitable for use with various types of chassis.
  • the Aufrichtü can be used with or without linear drive.
  • the linear drive between the support and the first lever parallelogram is arranged.
  • the first lever parallelogram has a third double-armed parallelogram lever, on whose arm the backrest support is displaceable.
  • the first double-armed lever is pivotally connected by means of a rod with the backrest support. When erecting the backrest support is therefore moved down so that no relative movement between the backrest and the back of the user takes place.
  • a linear drive can be provided, which can be actuated by the user to get up and sitting down.
  • a linear drive can be provided, which can be actuated by the user to get up and sitting down.
  • no motor drive is required.
  • a particularly advantageous embodiment of the erecting unit provides that the lever, which is pivotally connected to the footrest, a first spring joint element, for example, a so-called ROSTA element, having, with the first Hebelparallelogrammhebel is coupled, and that the lever has a second spring joint element which is coupled to the footrest.
  • the spring elements are biased and endeavor to pivot the seat against the weight of the user upwards.
  • the spring joint elements generate after reaching a predetermined Schweriklage a force which counteracts the further pivoting of the seat upwards.
  • the erecting frame on two seat frame, between which seat, backrest and footrest are arranged results in a particularly stable construction.
  • the Merichtgestell 13 has a support 21 and hinged to the support Aufrichtgestell 13.
  • the Aufrichtgestell 13 has two side frames 15 (FIG. Fig. 2 . 9.10 ), between which seat 17, backrest 19 and footrest 24 are arranged.
  • the side frames 15 have a Variety of levers on that in Fig. 1 are shown schematically. But it would also be possible to arrange a single such lever system centrally.
  • the construction of the erecting unit 10 is best seen in the schematic illustration in FIG. 1 and the FIGS. 3 to 7 visible, which show the movement.
  • the Aufrichtgestell 13 arranged on the support 21 has a seat support 23 which carries the seat 17, and a backrest support 25 which carries the backrest 19.
  • the erecting frame 13 has a first lever parallelogram 27 and a second lever parallelogram 29.
  • the first lever parallelogram 27 serves to keep the backrest 19 upright both in the sitting position and in the standing position of the user.
  • the second lever parallelogram 27 serves to keep the backrest 19 upright both in the sitting position and in the standing position of the user.
  • Lever parallelogram 29 serves to move the seat 17 with respect to the footrest 24, which is arranged on the support 21, when changing from the sitting position to the standing position upwards. Further, means 30 are provided to move the backrest 19 to the rear end of the seat 17 when changing from the sitting position to the standing position.
  • a linear drive 31 is provided between the support 21 and the first lever parallelogram 27. The linear drive 31 is articulated at 28 on the support 21 and at 32 on the lever 51. In addition to the linear drive 31 may occur a gas spring or other spring device, which compensates the body weight of the chair user. Federgelenketti prove, as described below with reference to the FIGS. 6 and 7 is described.
  • a linear drive 31 can be dispensed with if the chair user has sufficient muscle power.
  • the first lever parallelogram 27 has the pivot points 33 to 36.
  • the second lever parallelogram 29 has the pivot points 35, 37 to 39.
  • the pivot point 35 is common to both Hebelparallelogrammen 27, 29.
  • the first lever parallelogram 27 has four parallelogram 41, 49, 45, 23. Of these, three 41, 49, 45 are double-armed.
  • the first (41) and the second (49) Parallelogrammhebel have arms 43, 53, which form with two other levers 55,57 the second lever parallelogram 29, with the fulcrum 38 is hinged at one point of the support 21.
  • a lever 51 connects the common pivot 35 of the two Hebelparallelogramme 27, 29 articulated to the support 21 at 44th
  • the third parallelogram lever 45 which is located at the rear of the seat 17, has an arm 47 on which the backrest support 25 is slidably disposed.
  • the displacement of the backrest support 25 serve means, for example in the form of a rod 30, which connects the first parallelogram lever 41 to the backrest support 25 in an articulated manner.
  • FIGS. 3 to 5 and 6 and 7 show the movement sequence when changing from the sitting position to the standing position and vice versa. It can be seen that in these movements practically no relative movements take place between the body of the stool and the Guatemalaobermati. Thus, when changing from the sitting position to the standing position, the front edge of the seat 17 moves upwards and the backrest 19 downwards.
  • FIGS. 6 and 7 illustrated use of two spring joint elements 59, 61, for example of the type ROSTA, which are integrated in the lever 51.
  • the spring joint member 59 connects the lever 51 with the support 21 and the spring joint member 61 connects the lever 51 with the first Parallelogrammhebel 41.
  • Both spring joint elements 59, 61 are biased and strives to pivot the seat 17 upwards until it reaches a pivotal position of about 55 degrees. From this position, the further pivoting takes place up to the end position of Fig. 7 against the force of the spring element 59, 61:
  • FIGS. 8 to 10 show a chair and two different Aufrichtrollstühle with a Aufrichtmaschine 10.
  • the erecting unit 10 is attached to a foot 63.
  • On a footrest was omitted in this embodiment.
  • the support 21 could be made height adjustable, similar to the example already DE 26 25 046 suggests.
  • FIGS. 9 and 10 show by way of example that various chassis 11 can be used.
  • the erection unit can be provided with a foot as a chair, in particular as a therapy chair.
  • the Aufrichtü can also serve as a Aufrichtrollayne connected to a chassis.

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)
  • Special Chairs (AREA)

Claims (12)

  1. Unité d'élévation avec un support (21) et un cadre élévateur (13), articulé sur le support (21), qui présente un support de siège (23) qui porte un siège (17), un support de dossier (25) qui porte un dossier (19), un premier parallélogramme de levier (27) pour maintenir le dossier (19) aussi bien en position assise qu'en position debout de l'utilisateur et des moyens (30) pour déplacer le dossier (19) vers l'extrémité arrière du siège (17), lors d'un changement de la position assise à la position debout, cependant que le premier parallélogramme de levier (27) présente un premier levier à parallélogramme à deux bras (41) et un second levier à parallélogramme à deux bras (49), caractérisée en ce que des bras (43, 53) des deux leviers à parallélogramme à deux bras (41, 49) forment un second parallélogramme de levier (29) avec deux autres leviers (55, 57), que le pivot commun (35) des deux parallélogrammes de levier (27, 29) est relié par un troisième autre levier (51) de manière articulée à un premier endroit (44) du support (21) et que le pivot commun (38) des deux autres leviers mentionnés (55, 57) du second parallélogramme (29) est relié à un second endroit du support (21).
  2. Unité d'élévation selon la revendication 1, caractérisée en ce que le premier parallélogramme de levier (27) présente un troisième levier à parallélogramme à deux bras (45) sur le bras (47) duquel le support de dossier (25) est déplaçable et que le premier levier à deux bras (41) est relié au support de dossier (25) au moyen d'une tige (30).
  3. Unité d'élévation selon la revendication 1 ou 2, caractérisée en ce qu'un entraînement linéaire (31) est prévu entre le support (21) et le premier parallélogramme de levier (27).
  4. Unité d'élévation selon l'une des revendications 1 à 3, caractérisée en ce que le troisième autre levier (51) qui est relié de manière articulée au support (21) présente un premier élément à articulation à ressort (61) qui est couplé au premier levier à parallélogramme (41) et que le troisième autre levier (51) présente un second élément à articulation à ressort (59) qui est couplé au support (21).
  5. Unité d'élévation selon la revendication 4, caractérisée en ce qu'en position assise les éléments à articulation à ressort (59, 61) sont précontraints et s'efforcent de faire pivoter le siège (17) vers le haut.
  6. Unité d'élévation selon la revendication 5, caractérisée en ce que les éléments à articulation à ressort (59, 61), après avoir atteint une position de pivotement prédéterminée, produisent une force qui s'oppose à la poursuite du pivotement du siège (17) vers le haut.
  7. Unité d'élévation selon l'une des revendications 1 à 6, caractérisée en ce que le cadre élévateur présente deux cadres de siège (15) qui sont placés entre le siège (17) et le dossier (19).
  8. Unité d'élévation selon l'une des revendications 1 à 7, caractérisée par des moyens de ressort qui, après avoir atteint une position de pivotement prédéterminée, produisent une force qui s'oppose à une poursuite du pivotement du siège (17) vers le haut.
  9. Chaise avec une unité d'élévation avec les caractéristiques selon l'une des revendications 1 à 8 et un pied (63).
  10. Chaise selon la revendication 9, caractérisée en ce que le support (21) est réglable en hauteur.
  11. Fauteuil roulant élévateur avec un châssis (11) et une unité d'élévation selon l'une des revendications 1 à 8, fixée au châssis (11).
  12. Fauteuil roulant élévateur selon la revendication 11, caractérisé en ce qu'un repose-pieds (24) est placé en bas sur le support (21).
EP08748353.3A 2007-07-13 2008-05-15 Unité de redressement pour fauteuils roulants et chaises, en particulier chaises thérapeutiques Not-in-force EP2175821B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01132/07A CH712922B1 (de) 2007-07-13 2007-07-13 Aufrichteinheit für Aufrichtrollstühle und Therapiegeräte.
PCT/CH2008/000223 WO2009009913A1 (fr) 2007-07-13 2008-05-15 Unité de redressement pour fauteuils roulants et chaises, en particulier chaises thérapeutiques

Publications (2)

Publication Number Publication Date
EP2175821A1 EP2175821A1 (fr) 2010-04-21
EP2175821B1 true EP2175821B1 (fr) 2015-07-08

Family

ID=39047944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08748353.3A Not-in-force EP2175821B1 (fr) 2007-07-13 2008-05-15 Unité de redressement pour fauteuils roulants et chaises, en particulier chaises thérapeutiques

Country Status (9)

Country Link
US (1) US8403352B2 (fr)
EP (1) EP2175821B1 (fr)
AU (1) AU2008278200B2 (fr)
CA (1) CA2692434C (fr)
CH (1) CH712922B1 (fr)
DK (1) DK2175821T3 (fr)
NZ (1) NZ582410A (fr)
TW (1) TW200904391A (fr)
WO (1) WO2009009913A1 (fr)

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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
DK2175821T3 (en) 2015-10-05
NZ582410A (en) 2011-12-22
TW200904391A (en) 2009-02-01
WO2009009913A1 (fr) 2009-01-22
CA2692434C (fr) 2014-09-30
US20100207354A1 (en) 2010-08-19
AU2008278200A1 (en) 2009-01-22
CA2692434A1 (fr) 2009-01-22
US8403352B2 (en) 2013-03-26
CH712922B1 (de) 2018-03-15
EP2175821A1 (fr) 2010-04-21
AU2008278200B2 (en) 2013-08-29

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