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WO2003030687A1 - Siege a support de jambes extensible - Google Patents

Siege a support de jambes extensible Download PDF

Info

Publication number
WO2003030687A1
WO2003030687A1 PCT/CH2001/000604 CH0100604W WO03030687A1 WO 2003030687 A1 WO2003030687 A1 WO 2003030687A1 CH 0100604 W CH0100604 W CH 0100604W WO 03030687 A1 WO03030687 A1 WO 03030687A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
sitting position
seating
leg
leg support
Prior art date
Application number
PCT/CH2001/000604
Other languages
German (de)
English (en)
Inventor
Kurt Bär
Original Assignee
De Sede Ag
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 De Sede Ag filed Critical De Sede Ag
Priority to PCT/CH2001/000604 priority Critical patent/WO2003030687A1/fr
Publication of WO2003030687A1 publication Critical patent/WO2003030687A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/50—Supports for the feet or the legs
    • A47C7/506—Supports for the feet or the legs of adjustable type
    • A47C7/5066—Supports for the feet or the legs of adjustable type by rotation
    • A47C7/5068—Supports for the feet or the legs of adjustable type by rotation actuated by linkages
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/0242—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by electric motors

Definitions

  • the same seat serves both in the normal sitting position and in the extended sitting position to support the buttocks and thighs of the user.
  • a different ergonomic position is therefore required for the normal sitting position.
  • Nominally correct contact surface contour results for the extended sitting position a seat according to the state of the art can at best offer optimal sitting comfort in one of the two sitting positions.
  • the seat has a backrest, a seat surface and an extendable leg rest element.
  • the seat can be positioned in at least two different sitting positions, the leg support element being retracted in a first sitting position and arranged below the seat surface and extended in a second sitting position and forming a support surface for supporting the legs of a user.
  • the seat surface is formed by a rear and a front seat element, which are formed separately from one another.
  • the leg support element is arranged between the rear and front seat elements that it provides a support surface for supporting the legs and in particular the thighs of a user.
  • the leg support element forms a common, essentially continuous support surface in the second sitting position with the rear seat surface element, the front seat surface element or with both seat surface elements, which means that the elements forming the support surface adjoin one another closely or only slightly apart by a few millimeters to each other.
  • Such a contact surface permits essentially complete support of the legs and buttocks and also makes the seat appear as a coherent unit in this sitting position.
  • leg rest element and the seat surface elements are advantageously coupled to one another in this way, e.g. by means of mechanically positively coupled guide elements or by means of individual electrical actuating elements which are coupled to one another via a control system, such that moving the seat surface elements apart for the purpose of setting the second seat position inevitably also results in a movement of the leg support element in the direction of its position in the second seat position and vice versa.
  • a “forced coupling” helps to avoid operating errors when setting the seating positions.
  • the leg support element is mechanically guided in such a way that when it extends from the first sitting position into the second sitting position and vice versa, it performs a pivoting movement about an axis which changes its position relative to the rear seat surface element during the pivoting movement.
  • the leg support element and the front seat surface element are designed and connected to one another in such a way that they adjoin one another at any time such that they extend both when the leg support element is extended from the first sitting position to the second sitting position and when the movement is reversed form a common outer contour, which is essentially closed at least on the upper side forming the bearing surface in the second sitting position.
  • the surfaces of the leg support element and the front seat surface element which form the support surfaces in the second sitting position, form a different angle to each other in both sitting positions and the leg support element and the front seat surface element are connected to one another in such a way that the angle between these surfaces is extended when retracting and retracting or continuously changed when extending and retracting the legrest element, this results in relatively even movements, which help avoid load peaks in the guide and / or drive elements and also convey the desirable impression of a flowing movement.
  • the surface of the leg support element that forms the support surface in the second sitting position is inclined by 15 ° to 45 ° with respect to the perpendicular to the front of the seat in the first sitting position, so that the leg support element only has to perform a relatively small pivoting movement between the first sitting position and the second sitting position
  • the front seat element is fastened to the seat in such a way that in the second seat position it yields downwards in a resilient manner, preferably in such a way that it carries out a pivoting movement about an axis which lies in the region of the boundary edge thereof facing the seat , This effectively prevents the seat structure from being mechanically overloaded and tipping over when it is not used as intended, such as sitting in the second seating position on the front seating element, but without the properties of the seat when used as intended in the first and second seating positions to affect.
  • the seat is advantageously designed as a single-seat, preferably mobile, upholstered piece of furniture, since the advantages of the invention are particularly evident here. It is also preferred that the surfaces of the leg support element and the front seat surface element which form the support surface in the second seating position are formed by a common cushion covering connected in the region of these surfaces. This has the advantage that no objects can fall into any gaps between the leg rest and the front seat element and a surprising one-piece impression is created.
  • the seat according to the first aspect is used as seating for passenger transport vehicles, preferably for ships, airplanes, railroad cars, buses or mobile homes or for stationary lecture and recreation rooms
  • People preferably used for cinema halls, conference rooms, auditoriums and waiting halls.
  • Figure la is a side view of a seat according to the invention with the leg rest completely retracted (first sitting position);
  • Figure lb the seat of Figure la with the leg rest fully extended (second sitting position);
  • FIGS. 1a and 1b shows a side view of a part of the supporting structure of the seat from FIGS. 1a and 1b with the leg rest completely retracted (first sitting position);
  • Figure 2b is a side view of part of the support structure of the seat of Figures la and lb in an intermediate position when extending the leg rest;
  • FIG. 2 c shows a side view of part of the supporting structure of the seat from FIGS. 1 a and 1 b in a further intermediate position when the leg rest is extended;
  • Figure 2d is a side view of part of the support structure of the seat from Figures la and lb with the leg rest fully extended (second sitting position).
  • FIG. 1a Side view of a single-seat leather upholstered armchair according to the invention with an electrically adjustable backrest 1 and an electrically extendable leg rest element 3 is shown in FIG. 1a with the leg rest 3 fully retracted (first sitting position) and in FIG. 1b with the leg rest 3 fully extended (second sitting position).
  • the armchair points in the first sitting position in which it is used for normal sitting with kelt legs and feet arranged on the floor or near the floor, a seat 2, which is formed by the tops of a rear seat element 4 and a front seat element 5, which adjoin each other in this position and thus essentially one form a closed seat.
  • the leg support element 3 is in an inclined position below the seat surface 2, the surface of which, which forms the support surface in the second seat position, is inclined by approximately 25 ° to the front of the chair in relation to the vertical.
  • FIG. 1b which shows the armchair from FIG. 1 a in the second sitting position with the leg support element 3 fully extended, in which it is provided for relaxing with essentially straight legs and elevated feet
  • Seat surface elements 4, 5 in the second sitting position are separated from one another by the leg support element 3 now arranged between them and together with this form an essentially continuous support surface.
  • FIGS. 2a to 2d show side views of a part of the supporting structure of the seat from FIGS. 1a and 1b in different positions, the outlines of the seat surface elements 4, 5 and the leg support element 3 being shown in broken lines.
  • the support structure of the armchair consists of two flat, semicircular side parts 10 Stainless steel sheet (due to the illustration only one side part visible), between which the seat surface elements 4, 5 and the leg support element 3 are arranged in the first sitting position.
  • the rear seat element 4 is rigidly attached to the side parts 10, but designs are also provided in which the rear seat element 4 in the second seat position has a different position relative to the side parts 10 than in the first seat position.
  • the leg support element 3 is connected to two identical swivel arm pairs, each driven by an electric motor (not shown), each with an upper swivel arm 6 and a lower swivel arm 7 (likewise only one pair visible) in the area of the armchair sides with the side parts 10 and 10, based on those previously described Construction, also connected to the rear seat element 4, in such a way that when extended from the first seat position (FIG. 2a) via various intermediate positions (FIGS. 2b, 2c) to the second seat position (FIG.
  • each of the swivel arms 6, 7 is articulated once at a fulcrum on one of the two side parts 10 and once at a fulcrum D1, D2, which is fixed relative to the leg rest element 3, the corresponding fulcrums of the
  • Pivot arm pairs 6, 7 each have common axes of rotation, which are oriented perpendicular to the planar extent of the side parts 10.
  • the leg support element 3 is guided laterally over sliding blocks (not visible) which are arranged in the region of the pivot point D1 of the upper swivel arm 6 and are supported in the horizontal direction on the flat inner sides of the side parts 10.
  • the front seat element 5 is carried exclusively by the leg support element 3, by means of two swivel joints 9 which are located between the leg support element 3 and the front seat element 3.
  • Surface element 5 are arranged in the area of the upper side thereof and have a common axis of rotation, with which leg support element 3 is connected.
  • a gas pressure spring 11 which is articulated at one end to the front seat element 5 and at the other end to an articulated lever 8 connected to the upper swivel arm 6.
  • the articulated lever 8 and the length of the gas pressure spring 11 are dimensioned such that the front seat element 5 has essentially the same orientation both in the first sitting position and in the second sitting position.
  • a pivoting movement of the front seat surface element 5 around the pivot points 9 downwards is prevented by a mechanical stop
  • in the second sitting position such a movement is possible against the spring force of the gas pressure spring 11, so that a mechanical overloading of the support arrangement and tipping over of the armchair is effectively prevented by improper use in the second sitting position.
  • the leg rest element 3 and the front seat element 5 in the present case have a common cushion covering which is closed on the top side, so that these elements 3, 5 appear at first glance as one component.
  • the upper swivel arm 6 of each swivel arm pair in the second sitting position additionally serves as an upward stop for one arranged in the region of the pivot point D2 of the lower swivel arm 7 on the leg support side Stop roller (not visible) of the leg rest element 3, which creates an arrangement which is self-locking vertically from above when the leg rest element 3 is loaded in its front region or the front seat surface element 5, so that the forces must not be absorbed by the drive motor or its gearbox.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

La présente invention concerne un siège comprenant un dossier (1), une assise (2) et un support de jambes extensible (3) qui présente au moins deux positions d'utilisation réglables. Dans une première position d'utilisation, dans laquelle on utilise le siège avec les jambes pliées, l'élément de support de jambes (3) est rentré et situé sous l'assise (2) qui est formée d'un élément d'assise arrière (4) et d'un élément d'assise avant (5). Dans une seconde position d'utilisation, dans laquelle on utilise le siège avec les jambes allongées, le support de jambes (3) est déployé et est situé entre l'élément d'assise arrière (4) et l'élément d'assise avant (5). Le support de jambes offre alors à un utilisateur une surface de support permettant de soutenir ses jambes. Ce siège présente l'avantage d'offrir un support des jambes correct d'un point de vue ergonomique à la fois dans la première position d'utilisation normale, avec les jambes pliées, et dans la seconde position d'utilisation confortable, avec les jambes allongées, ce qui permet d'obtenir un bien meilleur confort d'utilisation qu'avec les solutions connues jusqu'alors.
PCT/CH2001/000604 2001-10-04 2001-10-04 Siege a support de jambes extensible WO2003030687A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CH2001/000604 WO2003030687A1 (fr) 2001-10-04 2001-10-04 Siege a support de jambes extensible

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2001/000604 WO2003030687A1 (fr) 2001-10-04 2001-10-04 Siege a support de jambes extensible

Publications (1)

Publication Number Publication Date
WO2003030687A1 true WO2003030687A1 (fr) 2003-04-17

Family

ID=4358249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2001/000604 WO2003030687A1 (fr) 2001-10-04 2001-10-04 Siege a support de jambes extensible

Country Status (1)

Country Link
WO (1) WO2003030687A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413634B (de) * 2003-06-23 2006-04-15 Eoos Design Gmbh Sitzmöbel mit einem sitzteil, einer lehne und einer ausfahrbaren beinauflage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR44439E (fr) * 1933-10-24 1935-01-19 Fauteuil-chaise longue perfectionné
GB516336A (en) * 1938-07-25 1939-12-29 Arthur Alfred Reason Improvements in or relating to hairdressing chairs
DE1293427B (de) * 1961-06-07 1969-04-24 Werdenia Grundstuecksgmbh Sitzmoebel mit einem Sitzteil, einer Rueckenlehne, einer Beinstuetze und einem Rahmengestell zum Tragen dieser Teile
US5169208A (en) * 1991-07-17 1992-12-08 The Berkline Corporation Chaise lounge recliner chair

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR44439E (fr) * 1933-10-24 1935-01-19 Fauteuil-chaise longue perfectionné
GB516336A (en) * 1938-07-25 1939-12-29 Arthur Alfred Reason Improvements in or relating to hairdressing chairs
DE1293427B (de) * 1961-06-07 1969-04-24 Werdenia Grundstuecksgmbh Sitzmoebel mit einem Sitzteil, einer Rueckenlehne, einer Beinstuetze und einem Rahmengestell zum Tragen dieser Teile
US5169208A (en) * 1991-07-17 1992-12-08 The Berkline Corporation Chaise lounge recliner chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413634B (de) * 2003-06-23 2006-04-15 Eoos Design Gmbh Sitzmöbel mit einem sitzteil, einer lehne und einer ausfahrbaren beinauflage

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