EP0077280B1 - Aufrichtstuhl - Google Patents

Aufrichtstuhl Download PDF

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Publication number
EP0077280B1
EP0077280B1 EP19820420138 EP82420138A EP0077280B1 EP 0077280 B1 EP0077280 B1 EP 0077280B1 EP 19820420138 EP19820420138 EP 19820420138 EP 82420138 A EP82420138 A EP 82420138A EP 0077280 B1 EP0077280 B1 EP 0077280B1
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EP
European Patent Office
Prior art keywords
links
shell
axis
stand
articulation
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
EP19820420138
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English (en)
French (fr)
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EP0077280A1 (de
Inventor
Michel Fayolle
Marie-Claude Kastler
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0077280A1 publication Critical patent/EP0077280A1/de
Application granted granted 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

Definitions

  • the present invention relates to a lift chair of the “monocoque” type, comprising a base, an ascent-descent mechanism and a shell composed of a seat, a backrest and two armrests joined together in a monobloc assembly, the mechanism uphill-down comprising two parallel and identical articulated systems arranged on the two opposite sides of the chair, each composed of two rods of unequal length, which each connect the base to the shell so that each system forms a deformable quadrilateral, the two rods of shorter length having their axis of articulation on the base located higher than the axis of articulation of the two rods of greater length on the base, while an extendable motorized device is articulated, on the one hand, to the base along a transverse axis and, on the other hand, to the shell along an axis parallel to the axis of articulation of the rods of shorter length to said shell.
  • a lift chair of this kind already described in patent CH-A-600 384, provides elderly or disabled people with assistance for the transition from the sitting position to the standing position, therefore for lifting, as well as for the passage reverse from standing to sitting position.
  • This chair allows such people to get up or sit down without the help of a third person and without physical effort.
  • the present invention aims to remedy these drawbacks by providing a lifting chair of the “monocoque” type, which is of simple and light construction, while having a particularly suitable movement and also allowing possible adjustments as a function of the size of user and / or the desired seating position.
  • the subject of the invention is a lift chair of the type indicated above, in which the axis of articulation on the base of the two rods of shorter length is moreover arranged behind the axis of articulation on the base of the two rods of greater length, and in which the axis of articulation between the extendable motorized device and the shell is, moreover, coincident with the axis of articulation of the rods of shorter length at said shell.
  • the lifting chair object of the present invention has a lifting mechanism in which the unequal length of the links and the position of the articulation axes give, on ascent, a remarkable movement: the shell of the chair rises first by remaining roughly parallel to itself, and it is only then that this hull tilts forward, while continuing its movement of elevation.
  • This movement can be ensured in particular by means of rods, the two shortest of which have a length less than half that of the two longest rods, and more particularly still by providing that the ratio between the lengths of the rods is approximately equal to 2 / 5. Furthermore, the simplicity of the lifting mechanism. which has a reduced number of axes of articulation, results in the lightness of the entire chair, allowing its easy movement by the user or by a person close to him.
  • the two shorter rods are articulated at points located near the anterior edge of vertical lateral elements integral with the shell, while the two longer rods are articulated in points located near the rear edge of said elements, the latter comprising a series of holes which allow the height of the articulation points of the two pairs of rods to be adjusted.
  • Said vertical lateral elements are, for example, legs folded downwards, which belong to a plate fixed under the seat of the shell.
  • the series of holes, provided in the latter case along the anterior and posterior edges of each lateral tab of the plate, allow an initial adjustment of the height relative to the ground of the shell, as well as of the inclination of the seat. with respect to the horizontal.
  • each pair of rods of equal length is integral with the same transverse tube, pivotally mounted along its axis between the two lateral parts of the base, the two rods more short length also being interconnected by a cross member carrying in its middle a yoke to which is articulated, along an axis passing through the points of articulation of these rods on the shell, the upper end of a threaded rod moved axially at by means of a rotary nut coupled to an electric geared motor, the threaded rod being partially housed inside a housing secured to the geared motor and articulated to the base along a transverse axis.
  • the armchair shown in the drawing comprises a metal base (1), two identical and parallel articulated systems arranged on the two opposite sides (1), of the armchair, each system being composed of two rods (2, 3) of unequal lengths, each connecting the base with a shell (4).
  • the base (1) has, on each side, a front upright (5) and a rear upright (6), interconnected by a right upper element (7) as well as by a bent lower bar (8).
  • the two bars (8) are connected to each other by two transverse elements (9), which with the middle parts of these bars (8) define a small rectangular central frame (10).
  • the shell (4) consists of a seat (11), a backrest (12) and two armrests (13), joined together as a single unit. Under the seat (11) is fixed a plate (14), the side parts of which are folded so as to form two vertical legs (15) facing downwards.
  • the first pair of connecting rods (2) of equal length is integral with the same transverse tube (16), pivotally mounted along its axis between the front parts of the two upper elements (7) of the base (1). These two rods (2) are also connected to each other at intermediate points of their length, by a crosspiece (17), while their ends remote from the tube (16) are articulated, at points (18), near the front edges. of the two lateral tabs (15) of the plate (14).
  • the crosspiece (17) carries two ears (19), constituting a yoke whose axis (20) passes through the points of articulation (18) of the rods (2) on the lateral legs (15) of the plate (14).
  • the second pair of connecting rods (3) of equal length is also integral with the same transverse tube (21), pivotally mounted along its axis between the upper parts of the two front uprights (5) of the base (1).
  • the ends of these links (3) remote from the tube (21) are articulated, at points (22), near the rear edges of the two lateral tabs (15) of the plate (14).
  • the links (3) of the second pair have a length greater than twice that of the links (2) of the first pair.
  • the length of the rods (2) (measured between the two articulation axes) is 12.5 cm
  • the length of the rods (3) (measured between the two articulation axes) is 31, 5 cm, which corresponds to a length ratio very close to 2/5.
  • the axis of articulation of the connecting rods (2) of shorter length on the base (1) is located above and behind the axis of articulation rods (3) of greater length on the base (1).
  • the axis of the tube (16) is located 8.5 cm higher than the axis of the tube (21), and 5 cm in back of the latter.
  • the central frame (10) of the base (1) is crossed by a housing (23) integral with an electric geared motor (24), which rotates a nut (not shown) cooperating with a threaded rod (25) of which the part outside the housing (23) is directed upwards.
  • the housing is linked to the two bars (8) by articulation along a transverse axis (26); the upper end of the threaded rod (25) is articulated to the yoke (19) along the axis (20).
  • Figures 1 to 4 make it possible to decompose the movement which brings the shell (4) from its lowest position to its highest position, this movement being controlled by the actuation of the gear motor (24) in the direction causing the lifting of the threaded rod (25) relative to the housing (23).
  • Each side tab (15) of the plate (14) has, along its front and rear edges, series of holes respectively (27 and 28), allowing positioning in various ways the articulation points (18 and 22) of the links (2 and 3), to adjust the height and the inclination of the shell (4) in the low position.
  • the manual control of the gear motor (24) will advantageously be placed on one of the armrests (13) of the shell (4).

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

Claims (6)

1. Einsitziger Aufrichtstuhl mit einem Fußgestell (1), einem Auf- und Abwärtsmechanismus und einer Sitzschale (4), die sich aus einem Sitz (11), einer Rückenlehne (12) und zwei Armlehnen (13) zusammensetzt, die zu einer einheitlichen Anordnung vereinigt sind, wobei der Auf- und Abwärtsmechanismus zwei parallele und identische, an den beiden entgegengesetzten Stuhlseiten angeordnete Anienksysteme enthält, die jeweils von zwei Schwingarmen (2, 3) ungleicher Länge gebildet werden, die jeweils das Fußgestell (1) mit der Sitzschale (4) derart verbinden, daß jedes System ein formveränderliches Viereck bildet, wobei am Fußgestell (1) die Anlenkachse (16) der beiden Schwingarme (2) kleinerer Länge oberhalb der Anlenkachse (21) der beiden Schwingarme (3) größerer Länge angeordnet ist, während eine motorisierte Ausfahreinrichtung (23 bis 25) einerseits am Fußgestell (1) an einer Querachse (26) und andererseits an der Sitzschale (4) an einer zur schalenseitigen Anlenkachse der Schwingarme (2) kleinerer Länge parallelen Achse angelenkt ist, dadurch gekennzeichnet, daß am Fußgestell (1) die Anlenkachse (16) der beiden Schwingarme (2) kleinerer Länge hinter der Anlenkachse (21) der beiden Schwingarme (3) größerer Länge angeordnet ist und daß ferner die Anlenkachse (20) zwischen der motorisierten Ausfahreinrichtung (23 bis 25) und der Sitzschale (4) mit der Anlenkachse der Schwingarme (2) kleinerer Länge an der Sitzschale (4) zusammenfällt.
2. Aufrichtstuhl nach Anspruch 1, dadurch gekennzeichnet, daß die Länge der beiden kürzeren Schwingarme (2) kleiner als die halbe Länge der beiden längeren Schwingarme (3) ist.
3. Aufrichtstuhl nach Anspruch 2, dadurch gekennzeichnet, daß das Verhältnis zwischen den Längen der kürzeren Schwingarme (2) und der längeren Schwingarme (3) etwa gleich 2/5 ist.
4. Aufrichtstuhl nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die beiden Schwingarme (2) kleinerer Länge an Stellen (18) angelenkt sind, die nahe dem vorderen Rand von fest mit der Sitzschale (4) verbundenen vertikalen Seitenelementen (15) angeordnet sind, während die beiden Schwingarme (3) größerer Länge an Stellen angelenkt sind, die nahe dem hinteren Rand der genannten Elemente angeordnet sind, wobei die letzteren Lochreihen (27, 28) zur Höheneinstellung der Anlenkstellen (18, 22) der beiden Paare von Schwingarmen (2, 3) enthalten.
5. Aufrichtstuhl nach Anspruch 4, dadurch gekennzeichnet, daß die vertikalen Seitenelemente (15) nach unten gebogene Lappen sind, die zu einer unter dem Sitz (11) der Sitzschale (4) befestigten Platte (14) gehören, wobei die Lochreihen (27, 28) dem vorderen und dem hinteren Rand jedes Seitenlappens (15) der Platte (14) entlang vorgesehen sind.
6. Aufrichtstuhl nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß jedes Paar von Schwinghebeln gleicher Länge (2, 3) mit einem gleichen Querrrohr (16, 21) fest verbunden ist, das zwischen den beiden Seitenpartien (5, 6, 7) des Fußgestells (1) um seine Achse drehbar angeordnet ist, wobei die beiden Schwingarme (2) kleinerer Länge außerdem durch eine Traverse (17) miteinander verbunden sind, die in ihrer Mitte einen Bügel (19) trägt, an dem das obere Ende einer mit Hilfe einer Drehmutter, die mit einem elektrischen Getriebemotor (24) gekuppelt ist, axial verschiebbaren Gewindestange um eine durch die schalenseitige Anlenkstellen (18) dieser Schwingarme (2) gehende Achse drehbar befestigt ist, wobei sich ein Teil der Gewindestange (25) im Inneren eines Gehäuses (23) erstreckt, das fest mit dem Getriebemotor (24) verbunden und am Fußgestell an einer Querachse (26) angelenkt ist.
EP19820420138 1981-10-01 1982-09-29 Aufrichtstuhl Expired EP0077280B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118827 1981-10-01
FR8118827A FR2513876A1 (fr) 1981-10-01 1981-10-01 Fauteuil elevateur

Publications (2)

Publication Number Publication Date
EP0077280A1 EP0077280A1 (de) 1983-04-20
EP0077280B1 true EP0077280B1 (de) 1986-05-28

Family

ID=9262804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820420138 Expired EP0077280B1 (de) 1981-10-01 1982-09-29 Aufrichtstuhl

Country Status (4)

Country Link
EP (1) EP0077280B1 (de)
DE (1) DE3271399D1 (de)
ES (1) ES8306319A1 (de)
FR (1) FR2513876A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815435A1 (de) * 1988-05-06 1989-11-16 Dieter Schaller Sitzmoebel mit einem um eine schwenkachse nach vorn hochklappbaren sitz
EP3650000A1 (de) 2018-11-09 2020-05-13 Costola, Valentino Vorrichtung zum heben von personen, die mit dem sitz eines stuhls oder eines sessels verbunden werden kann

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587678A (en) * 1985-02-04 1986-05-13 Love Larry W Toilet seat booster
GB2183150A (en) * 1985-09-26 1987-06-03 Cluney Upholstery Limited Chair
GB2205230B (en) * 1987-04-24 1990-06-06 Cinnamon Limited J Chair
US4852939A (en) * 1987-10-23 1989-08-01 Orthokinetics, Inc. Device for converting a recliner chair to a recliner-lift chair
CA1299989C (en) * 1988-05-20 1992-05-05 Larry P. Lapointe Recliner chair lift base assembly
US4946222A (en) * 1989-01-30 1990-08-07 Triangle Engineering Of Arkansas, Inc. Lift platform for chairs
FR2663218B1 (fr) * 1990-06-15 1993-04-23 Tanis Fauteuil motorise avec assistance des mouvements verticaux de l'utilisateur.
US5178025A (en) * 1990-08-31 1993-01-12 Innovative Medical Engineering, Inc. Tiltable lift seat devices
AU6354194A (en) * 1993-03-02 1994-09-26 Kenneth Casey Universal lift frame for a chair
US5458349A (en) * 1994-06-30 1995-10-17 Mung-Tung; Wang Multi-function electric wheel-chair
NL1001998C2 (nl) * 1995-12-28 1997-07-02 Doge Collection B V Hef-kantelmechanisme.
GB2412847B (en) * 2004-04-07 2006-10-11 Charles Basil Firth Wheelchair with elevating seat
WO2008005049A2 (en) * 2006-06-30 2008-01-10 I-Trust Better Life Corp. A lift chair and a chair base frame with an acuator for use therewith
ATE460147T1 (de) * 2006-08-21 2010-03-15 Opruga D D Sitzmöbel mit hubantrieb zur unterstützung beim aufstehen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB926157A (en) * 1960-06-30 1963-05-15 Frederick Edward Rule Hooper Invalid chairs or the like
US3091426A (en) * 1961-05-08 1963-05-28 Arthur J Klein Adjustable chair
US3138402A (en) * 1961-11-01 1964-06-23 American Metal Prod Invalid chair
CH600834A5 (en) * 1975-10-24 1978-06-30 Truffart Demont Nelly Elevating and tipping chair for aged or infirm
US4083599A (en) * 1976-04-16 1978-04-11 Gaffney Edward J Lift chair with rocker and wheel frame attachments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815435A1 (de) * 1988-05-06 1989-11-16 Dieter Schaller Sitzmoebel mit einem um eine schwenkachse nach vorn hochklappbaren sitz
EP3650000A1 (de) 2018-11-09 2020-05-13 Costola, Valentino Vorrichtung zum heben von personen, die mit dem sitz eines stuhls oder eines sessels verbunden werden kann

Also Published As

Publication number Publication date
ES516118A0 (es) 1983-06-01
EP0077280A1 (de) 1983-04-20
DE3271399D1 (en) 1986-07-03
FR2513876B1 (de) 1984-01-13
FR2513876A1 (fr) 1983-04-08
ES8306319A1 (es) 1983-06-01

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