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EP0159562B1 - Fauteuil élévateur - Google Patents

Fauteuil élévateur Download PDF

Info

Publication number
EP0159562B1
EP0159562B1 EP85103664A EP85103664A EP0159562B1 EP 0159562 B1 EP0159562 B1 EP 0159562B1 EP 85103664 A EP85103664 A EP 85103664A EP 85103664 A EP85103664 A EP 85103664A EP 0159562 B1 EP0159562 B1 EP 0159562B1
Authority
EP
European Patent Office
Prior art keywords
seat
chair
handle
raising
user
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.)
Expired
Application number
EP85103664A
Other languages
German (de)
English (en)
Other versions
EP0159562A2 (fr
EP0159562A3 (en
Inventor
Bruno Meyer
Peter Nold
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.)
Valutec AG
Levo AG Dottikon
Original Assignee
Valutec AG
Levo AG Dottikon
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 Valutec AG, Levo AG Dottikon filed Critical Valutec AG
Publication of EP0159562A2 publication Critical patent/EP0159562A2/fr
Publication of EP0159562A3 publication Critical patent/EP0159562A3/de
Application granted granted Critical
Publication of EP0159562B1 publication Critical patent/EP0159562B1/fr
Expired 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
    • A61G5/10—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
    • A61G5/10—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
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/04—Wheelchair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/10—Occupant-arising assist

Definitions

  • the invention relates to an erection chair, in particular a collapsible erection wheelchair, with a seat arranged on a support frame which can be moved from a seat position into an erection position and vice versa, a device which exerts a force on the seat in order to track the seat to the user and / or to counteract the weight of the user, and thus to facilitate the uprighting movement of the user, at least one handle on which the user can exert a force when standing up to reduce the weight acting on the seat and a blocking device to hold the seat in the sitting position or to block an upright position.
  • DE-A-23 62 029 describes an adjusting device for executing a tilting movement in a chair.
  • This adjustment device has two main springs designed as gas springs, each of which is attached at one end to the seat and at the other end to the support frame.
  • Two vertical tubes are provided at the front of the support frame, each of which has a handle with a lever, as is common, for example, on bicycle handlebars. From these handle levers, Bowden cables lead to locking devices for the main springs. To stand up with this upright chair, the user releases the locking of the main springs and may lean forward slightly. The patient can still hold on to two handles, which are attached to the front on two vertical tubes extending across the seat, and pull slightly forward.
  • the spring force swings the seat upwards around its front edge and brings the user to the standing position.
  • an auxiliary spring is also involved in this pivoting movement. If the user now wants to return from the upright position to the sitting position, he pivots a hand lever that relaxes the auxiliary spring. The main springs are then compressed again under the user's body weight, so that the seat returns to the sitting position and is locked in this position after releasing the corresponding handle levers. By swiveling an operating lever forward, the user can bias the auxiliary spring again, so that its additional force is again available for an uprighting movement.
  • This type of erection chair is relatively complicated and expensive to manufacture.
  • a particular disadvantage is that the handles are attached to the front of the chair, making it impossible for the user to transfer laterally, as is desirable, for example, when changing to the toilet seat.
  • the handle is in an unfavorable position when the user stands up, so that the user can only raise himself with such a chair with great effort, if at all.
  • Such a chair has not been used commercially.
  • British GB-A-1 534 777 describes a collapsible erecting chair which has a seat arranged in a supporting frame. This seat can be moved from a sitting position into a predetermined upright position. On each side of the upright chair there is a pawl on the support frame or on the armrest. With these pawls, the seat can be blocked in the sitting position or in the upright position. In order to make it easier to move the seat from the sitting position to the upright position, the horizontal armrests can be removed from their anchoring and attached to the front of the support frame in a vertical position. Each armrest then performs the function of a handle holder with a handle arranged at the top. The chair user can then lean on these handles to reduce the weight on the seat. The removable armrests also allow the user to make a lateral transfer movement in the sitting position, as z. B. to switch to the toilet seat is desired.
  • the handles should not prevent a lateral transfer movement of the user in the sitting position. Furthermore, the handles should be arranged ergonomically in every position so that the user can perform an uprighting movement without great effort. Furthermore, additional expensive mechanisms and gas springs should not be necessary.
  • an upright chair of the type mentioned at the outset in that the blocking device is designed in such a way that the seat can be blocked in different positions between the sitting position and the upright position, and in that an adjusting device is provided in order to adjust the height of the handle adjust.
  • This has the advantage over the described chair according to the prior art that the user can get the handles into a position in which he can initiate an uprighting movement with the least effort. Tests have shown that the best position of the handles is increasing Start of the upright movement is near the user so that the user only needs to press down to initiate an upright movement. If the user then moves a little upwards and forwards, the handles are too deep and too far back.
  • the handles are adjustable according to the invention, he can move them upwards to a different position after a certain uprighting movement, where they are comfortable again and he can continue to exert force on the handles for further uprighting movements without great effort. Conversely, when sitting down, the user can bring the handles back to a lower position, where they can also serve as an armrest. However, it is also possible to lower the handles so far that they do not in any way prevent a lateral transfer movement.
  • the adjustment device is expediently formed by a support arm which carries the handle, is articulated on the support frame and can be locked at different heights. This results in a particularly simple and cheap training.
  • the support arm can advantageously be lowered into a position below the level of the seat, at which level the seat is in the sitting position. This ensures that the handles can be lowered so that they do not in any way prevent the user from moving.
  • the respective support arm is articulated on the front of the support frame.
  • the support arm can have the same axis of rotation as the seat. This ensures that the handles are in a comfortable position for the patient in any position of the erection chair. The handles can then be moved up and forwards as the seat of the upright chair moves up and forwards during an upright movement. You are therefore always in an ergonomically favorable position.
  • An advantageous embodiment provides that a locking lever is articulated on the support arm at a distance from its fulcrum, said locking lever having a plurality of locking points into which a locking element arranged in the support frame can engage.
  • the locking lever is advantageously two-armed, one arm having the locking points and the other arm having a handle for unlocking. This results in a particularly simple construction of the adjustment device.
  • the respective handle can be pivoted through a predetermined range. It should be noted that an upright wheelchair must meet conflicting requirements. On the one hand, it must not exceed a certain standard width, otherwise problems with relatively narrow door openings arise, and on the other hand, the seat should be sufficiently wide so that the user feels comfortable. However, this means that there is only a very small space between the rear wheels and the space that the seat occupies when it moves. In this space, the handle must be able to be lowered for a transfer movement. Thanks to the pivotable design of the handle according to the invention, this is possible without sacrificing the usual seat width. It is sufficient to swivel the handles inwards in order to lower the handles in the area of the wheels.
  • an expedient embodiment provides that the respective support arm has a locking pawl which normally engages in a ratchet wheel or ratchet wheel segment fixedly arranged on the support frame, but can be released by hand.
  • This construction also results in a relatively cheap adjustment device.
  • the pivot point is advantageously at the back or front of the support frame.
  • the collapsible erection chair 10 shown in Figures 1 to 3 consists in a conventional manner of the support frame 11 with a pair of front wheels 13 and a pair of rear wheels 15, a seat 17 hinged to the support frame 11, a backrest 19 hinged to the seat 17 and one at the front of the seat articulated footrest 21.
  • the support frame 11 consists of two side frames 23 which are connected to one another with two collapsible struts 25. Another strut 25 is provided for the backrest 19.
  • the uprighting movement from the position in FIG. 1 to the position in FIG. 2 is supported by two springs 27. These springs 27 exert a force when erected on the seat, which counteracts the weight of the user.
  • a parallelogram rod 29, which is rotatably attached at one end to the support frame 11 and at the other end to a pivot point 30 of the backrest 19, ensures that the backrest assumes practically the same position in every position of the chair.
  • the connecting lever 31 ensures the stabilization of the footrest 21.
  • the erection chair has an adjustment device 33 on at least one side, but preferably on both sides, with which the respective handle 35 can be brought to different heights. This enables the user to bring the handles 35 to a height which is adapted to his own position and in which he can rest well on these handles 35 in order to straighten up further.
  • the handles 35 can also be brought into a lower position in which they are located in the vicinity of the rear wheels. In this position there are no obstacles to a lateral transfer movement of the user, as is desired, for example, when changing to a toilet seat.
  • a closer look at the adjusting device 33 shows that it is articulated on the same axis of rotation 39 as the seat 17 on the support frame 11. This articulation at the front of the support frame enables the lowering of the support arms 37 with the handles 35 shown in FIG. 1 into a position in which they do not interfere with a transfer movement.
  • a locking lever 41 is articulated at 40 on the support arm 37 at a distance from the pivot point 39.
  • This has a slot 43 with four locking points 45, in which a locking member 47 arranged on the support frame 11 can engage.
  • This locking lever 41 has two arms, the upper arm 49 forming a handle for unlocking the locking lever. If the user of the chair wants to lower the handle 35, he pushes the locking lever handle 49 forward so that the latching member 47 disengages and the handle 35 can be pushed into the position shown in FIG.
  • Figures 2, 4 and 5 show the handles 35 in an outwardly pivoted position. Since the space between the rear wheels 15 and the seat 17 is limited, the handles 35 can be pivoted in the direction of the arrow 36 (FIG. 5) until they lie in the same vertical plane as the support arms 37 Handles 35 also place in the position shown in Figure 1
  • the support arm 37 consists of a tube piece.
  • the handle 35 has an extension 36 which engages in the free end of the pipe section and can be rotated therein about a predetermined range.
  • the handle 35 has an actuating lever 51 which can be easily reached by the user's fingers and which is connected via a Bowden cable 52 to a blocking device 53 for the seat 17. In the unactuated position of the lever 51, the seat 17 remains blocked in the respective position.
  • the user of the upright chair wants to move from the sitting position of FIG. 1 to the standing position of FIG. 3, he slightly raises the handles 35 and then rests on them.
  • the handles 35 then pivot by rotation in the bushing 50 into the end position shown in FIGS. 2 and 5.
  • the locking member 47 snaps into a locking point 45 of the locking lever 41. If the user now unlocks the seat by operating the actuating lever 51 and is supported on the handles 35, he can move upwards with little effort thanks to the help of the springs 27. He then releases the actuating lever 51 and pulls the handles 35 further up until the latching members 47 snap in another position. The user then actuates the actuating lever 51 again and continues to move upward through the muscular strength of the arms until he has reached the desired position.
  • the user again actuates the actuation lever 51, whereupon the seat 17 moves downward under the weight of the user.
  • the locking levers 41 can be released and the handles 35 can be lowered by moving the locking element handles 49 forward.
  • FIG. 6 shows another embodiment of the adjustment device 33.
  • a ratchet wheel 55 or a ratchet segment is fixedly attached to the support frame 11, into which a locking pawl 57 movably arranged on the support arm 37 can engage. If the support arm 37 is moved upward, a downward movement is blocked by the pawl 57. In order to release the pawl, however, it can be moved upwards against the force of a spring 59 with the button 61. If necessary, the arm 63 can be moved transversely into a slot 65 and locked there.
  • FIG. 7 shows an erection chair as in FIG. 3, but with a different adjustment device 33.
  • the respective handle is arranged on a column 63 which is mounted on the support frame 11 so as to be extendable.
  • the handle 35 can be pulled up into any position, in which case a mechanism prevents the column 63 from sliding down. However, if the column is pulled out into the upper end position, it can be brought back into the lower end position by applying slight pressure.
  • the mechanism used for this purpose can be seen in Figure 8.
  • the column 63 with the handle 35 and the actuating lever 51 is displaceable in the tube 65.
  • a conical spring washer 67 causes jamming when a force acts on the handle 35 downward. However, the handle 35 can be pulled further up.
  • the spring washer 67 gets into the space 69 and then the handle 35 is pressed down, the spring washer is turned inside out and the handle 35 can be moved downward with ease. If the spring washer 67 then enters the space 71, when the column 63 is pulled out it is again turned into the position shown in FIG. 8, in which it counteracts a downward movement of the column 63.
  • FIGS. 9 and 10 differs from that of FIGS. 7 and 8 in that the tube 65 with the extendable column 63 is not arranged rigidly but pivotably at 71 on the rear of the supporting frame.
  • a pawl mechanism not shown, similar to that of Figure 6, allows the column 63 to be locked in various pivot positions. To release the column again, it is sufficient to pull the button 73 and thus to release the pawl. Instead of a linkage at 71, a linkage at the front on the support frame 11 would also be possible. Otherwise, the adjusting device 33 is constructed in the same way as that in FIGS. 7 and 8, so that reference can be made to the description there for details.

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

Claims (16)

1. Fauteuil redressable, en particulier fauteuil roulant redressable du type pliant, comprenant un siège (17) qui est monté sur un cadre porteur (11) et qui, a partir d'une position dans laquelle l'utilisateur est assis, peut être placé dans une position redressée et vice-versa, un dispositif (27) qui exerce sur le siège (17) une force pour que le siège suive le mouvement de l'utilisateur et/ou pour agir en sens inverse du poids de l'utilisateur et faciliter ainsi le mouvement de redressement de l'utilisateur, au moins une poignée (35) qui peut être placée dans une situation dans laquelle elle n'entrave pas un mouvement de transfert latéral de l'utilisateur et sur laquelle l'utilisateur peut exercer une force lorsqu'il se redresse, afin de réduire le poids qui agit sur le siège (17), et un dispositif de blocage (53) pour bloquer le siège (17) dans la position dans laquelle l'utilisateur est assis ou dans une position redressée, caractérisé en ce que le dispositif de blocage (53) est réalisé de telle manière que le siège (17) puisse être bloqué dans différentes positions entre la position où l'utilisateur est assis et la position redressée, et en ce qu'il est prévu un dispositif (33) de réglage de la poignée pour régler la position en hauteur de la poignée (35) lors du mouvement de redressement.
2. Fauteuil redressable selon la revendication 1, caractérisé en ce que le dispositif de réglage est constitué par un bras porteur (37) qui porte la poignée (35), est articulé sur le cadre porteur (11) et peut être bloqué dans différentes positions en hauteur.
3. Fauteuil redressable selon la revendication 2, caractérisé en ce que le bras porteur (37) peut être abaissé dans une position au niveau ou au-dessous du niveau du siège (17), niveau auquel se trouve le siège (17) dans la position assise (fig. 1).
4. Fauteuil redressable selon la revendication 2 ou 3, caractérisé en ce que le bras porteur (37) est articulé à l'avant sur le cadre porteur (11).
5. Fauteuil redressable selon la revendication 4, caractérisé en ce que le bras porteur (37) présente le même axe de rotation (39) que le siège (17).
6. Fauteuil redressable selon la revendication 2 ou 3, caractérisé en ce que le bras porteur est articulé à l'arrière sur le cadre porteur (11).
7. Fauteuil redressable selon l'une quelconque des revendications 3 à 6, caractérisé en ce qu'il est articulé sur le bras porteur (37), à distance de son pivot, un levier de verrouillage (41) qui présente plusieurs points de crantage (45) dans lesquels peut s'engager un organe de crantage (47) monté sur le cadre porteur (fig. 3).
8. Fauteuil redressable selon la revendication 7, caractérisé en ce que le levier de verrouillage (41) est un levier à deux bras et en ce que l'un des bras présente les points de crantage (45) et l'autre bras comporte une manette (49) pour le déverrouillage.
9. Fauteuil redressable selon l'une quelconque des revendications 3 à 8, caractérisé en ce que la ou les poignées (35) peuvent pivoter sur une distance prédéterminée.
10. Fauteuil redressable selon la revendication 9, caractérisé en ce que le bras porteur (37) est constitué par un morceau de tube et en ce que la poignée (35) présente un prolongement (36) qui s'engage dans l'extrémité libre du morceau de tube (37) et peut tourner dans ce dernier sur une distance prédéterminée.
11. Fauteuil redressable selon l'une quelconque des revendications 3 à 6, caractérisé en ce que le bras porteur (37) comporte un cliquet de verrouillage (57) qui est normalement en prise avec une roue à cliquet (55) ou un segment de roue à cliquet, mais qui peut être libéré à la main (fig. 6).
12. Fauteuil redressable selon la revendication 1, caractérisé en ce que le dispositif de réglage (33) est constitué par une colonne (63) montée télescopiquement sur le cadre porteur (11) (fig. 7, 8).
13. Fauteuil redressable selon la revendication 12, caractérisé en ce que la colonne peut pivoter et peut être verrouillée dans différentes positions.
14. Fauteuil redressable selon la revendication 13, caractérisé en ce que le centre de rotation pour la colonne pivotante se trouve en arrière ou en avant sur le cadre porteur.
15. Fauteuil redressable selon l'une quelconque des revendications 1 à 14, caractérisé en ce qu'une poignée (35) est prévue de chaque côté du siège (17).
16. Fauteuil redressable selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'il est prévu à proximité de la poignée (35), dans une position que les doigts de l'utilisateur peuvent atteindre, un élément de manoeuvre (51) servant à la libération du dispositif de blocage (53) pour le siège (17).
EP85103664A 1984-04-06 1985-03-27 Fauteuil élévateur Expired EP0159562B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1744/84 1984-04-06
CH174484 1984-04-06

Publications (3)

Publication Number Publication Date
EP0159562A2 EP0159562A2 (fr) 1985-10-30
EP0159562A3 EP0159562A3 (en) 1986-10-08
EP0159562B1 true EP0159562B1 (fr) 1988-12-28

Family

ID=4217567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103664A Expired EP0159562B1 (fr) 1984-04-06 1985-03-27 Fauteuil élévateur

Country Status (5)

Country Link
US (1) US4598944A (fr)
EP (1) EP0159562B1 (fr)
JP (1) JPS60225555A (fr)
DE (1) DE3566951D1 (fr)
FR (1) FR2562420B3 (fr)

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Publication number Publication date
DE3566951D1 (en) 1989-02-02
JPS60225555A (ja) 1985-11-09
EP0159562A2 (fr) 1985-10-30
FR2562420A3 (fr) 1985-10-11
EP0159562A3 (en) 1986-10-08
JPH035175B2 (fr) 1991-01-24
FR2562420B3 (fr) 1986-03-28
US4598944A (en) 1986-07-08

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