EP0918480B1 - Neigungsverstellbarer stuhl - Google Patents

Neigungsverstellbarer stuhl Download PDF

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Publication number
EP0918480B1
EP0918480B1 EP97922355A EP97922355A EP0918480B1 EP 0918480 B1 EP0918480 B1 EP 0918480B1 EP 97922355 A EP97922355 A EP 97922355A EP 97922355 A EP97922355 A EP 97922355A EP 0918480 B1 EP0918480 B1 EP 0918480B1
Authority
EP
European Patent Office
Prior art keywords
unit
reclinable
rigid member
frame
pair
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 - Lifetime
Application number
EP97922355A
Other languages
English (en)
French (fr)
Other versions
EP0918480A4 (de
EP0918480A1 (de
Inventor
Samson Ilan
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.)
SAMSON, ILAN
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
Application filed by Individual filed Critical Individual
Publication of EP0918480A1 publication Critical patent/EP0918480A1/de
Publication of EP0918480A4 publication Critical patent/EP0918480A4/de
Application granted granted Critical
Publication of EP0918480B1 publication Critical patent/EP0918480B1/de
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit, elastically mounted in a rigid frame
    • A47C3/0255—Rocking chairs with seat, or seat and back-rest unit, elastically mounted in a rigid frame pivotally mounted in the base frame, e.g. swings
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/03—Locking members

Definitions

  • the present invention relates a suspension device for use in reclinable seating, particularly seating in which the reclinable unit comprises a back rest and seat portion formed in fixed relation to one another e.g. as an integral unit.
  • This reclinable unit may also comprise a leg support or footrest portion.
  • FIGS. 2 and 3 of U.S. Patent No. 4,790,599 show such an arrangement in the upright and fully reclined states, respectively.
  • FIGS. 1 and 2 of the present application schematically correspond to those drawings in the patent.
  • a reclining chair according to the preamble of independent claim 1 is disclosed in GB-A-574 307.
  • a reclining chair comprising a frame, a reclinable unit having a back and a seat that are fixed relative to one another, and a mechanism on each side of the reclinable unit for suspending the reclinable unit from the frame, said mechanism including a pair of swing links pivotally connected at the top to the frame at a first pair of spaced apart pivot points and interconnected through a rigid member at a second pair of pivot points closer together than the first pair pivot points, and said reclinable unit being rigidly connected to the rigid member preventing relative movement between the reclinable unit and the rigid member during pivotal movement of the reclinable unit, characterised in that the reclinable unit can pivot between an upright position and a reclined position, and the geometry of the mechanism suspending the reclinable unit from the frame is such that the combined centre of gravity of the reclinable unit and any occupant remains at a substantially constant height during movement of the reclinable unit
  • a reclinable armchair incorporating the present invention may comprise a base unit 1 and a reclinable unit 2 incorporating a backrest section, a seat section and a footrest section in fixed structural relationship to one another.
  • the base unit 1 incorporates two side members, the reclinable unit being suspended between the side members by means of two linkage mechanisms according to the present invention.
  • the centre of gravity levelling effect provided by the present invention can be achieved by linkage arrangement of four rigid members (links) in which two downwardly converging swing links 15. 16 are pivoted from pivots 22 and 23, respectively, which are attached to the upper part of base structure 1, pivot 23 being behind pivot 22 in the feet-to-head direction.
  • the other end of said links 15, 16 are pivotally connected to the ends of a further link or rigid member 14 at pivots 20,21.
  • pivots 20 and 21 are closer together than pivot 22 and 23.
  • a downwardly extending member 13 is rigidly attached.
  • the lower end of member 13 is rigidly attached to the reclinable seating unit 2.
  • the links 14, 15 and 16 with the base 1 between the pivots 22 and 23 form a four-bar linkage.
  • the link 14 is generally disposed below the level of the pivots 22 and 23.
  • FIGS. 6, 7 and 8 show the position of the linkage mechanism members (links) 14-16 in the upright, partially reclined (intermediate), and fully reclined positions, respectively.
  • the typical range of reclining movement is 30° - 60°.
  • this arrangement leads to the movement of the centre of gravity 5 remaining approximately horizontal, as opposed to its movement as shown in FIG. 3 which shows the result of suspending the seating element 2 from a single fixed pivot axis 4, as in the armchair known from U.S. Patent No. 4,790,599 and shown in FIGS. 1-3.
  • This effect arises because the pivot axis is (inevitably) lower than the centre of gravity.
  • the present invention cannot totally guarantee an absolutely horizontal movement of the centre of gravity 5 for all users, mainly because of differences in body build.
  • the small amount of friction inevitably present in the system covers small residual imbalances and also a user will be able to optimise the balance of the chair by altering the fixed position of his body in the chair, e.g. by an adjustment of a centimetre or so forwards or backwards.
  • the small effort required on the user's part to rotate the reclinable unit 2 between its various positions is not only acceptable but actually beneficial, as it allows the position to be changed only when desired.
  • An occupant can move the reclining armchair between positions by shifting his centre of gravity e.g. by moving his arms or slight forward leaning, or by exerting a force on the base unit 1 e.g. by pushing or pulling on arms of the chair (not shown) which may be affixed thereto.
  • FIG. 9 One way in which this may be achieved in chairs incorporating the mechanism of the present invention is shown in FIG. 9, where a rigid arm 34 is pivotally connected to the base 1 at 35. In the locked state, the arm 34 is rotated over pivot 35 so as to rest against a point 33 (preferably an outwardly projecting element) on member 13. To unlock the chair, arm 35 is lifted clear (34a) of projecting element 34.
  • FIG. 10 Another possible locking method involves the use of one or more oval or other non-circular cross-section members 43 affixed to and movable with the reclinable unit 2 and running in a guide trough or between guide rails 40. 41 (FIG. 10).
  • Rotation of the members 43 within the trough or between the rails e.g. by means of handle 44 moves the member(s) from a position in which the chair is free to move (FIG. 12) and a locking position (FIG. 13).
  • the short axis of the oval 43 lies in the direction of the rails 40.41.
  • the long axis of the oval 43 lies in the direction of the rails 40, 41.
  • This mechanism allows the chair to be locked in any position and only one quarter turn of handle 44 is required to lock and release the chair.
  • Optional provisions of various known types can be included for arresting the reclinable unit. Also or alternatively, additional friction can be introduced into the pivots or by way of the upholstery.
  • the supporting member and links 13-16 of the linkage mechanism may be formed from any suitable material, but they must be strong enough to bear the weight of the reclinable unit 2 and an occupant. Steel is a possible manufacturing material.

Landscapes

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

Claims (4)

  1. Liegesessel, umfassend
    einen Rahmen (1)
    eine verstellbare Einheit (2) mit einer Rückenlehne und einer Sitzfläche, die relativ zueinander feststehend sind, und
    einen Mechanismus auf jeder Seite der verstellbaren Einheit (2), um die verstellbare Einheit am Rahmen (1) aufzuhängen,
    wobei dieser Mechanismus ein Paar Schwenkverbindungen (15, 16) einschließt, die an der Oberseite des Rahmens (1) auf drehbare Weise mit einem ersten Paar beabstandeter Drehpunkte (22, 23) verbunden sind und an einem zweiten Paar Drehpunkte (20, 21), die näher zusammen liegen als das erste Paar Drehpunkte (22, 23), durch ein starres Element (14) miteinander verbunden sind, und
    wobei diese verstellbare Einheit (2) mit dem starren Element (14) starr verbunden ist, wodurch die relative Bewegung zwischen der verstellbaren Einheit (2) und dem starren Element (14) während der Bewegung der verstellbaren Einheit (2) verhindert wird,
    dadurch gekennzeichnet, daß
    die verstellbare Einheit (2) zwischen eine aufrechte Position und eine geneigte Position gedreht werden kann, und
    die Geometrie des Mechanismus, der die verstellbare Einheit am Rahmen aufhängt, derart ist, daß der kombinierte Schwerpunkt (5) der verstellbaren Einheit und eines Insassen während der Bewegung der verstellbaren Einheit zwischen der aufrechten Position und der geneigten Position auf einer im wesentlichen konstanten Höhe bleibt.
  2. Liegesessel nach Anspruch 1, wobei das starre Element (14) ein drittes Verbindungselement ist, dessen mittlerer Abschnitt durch ein nach unten verlaufendes zweites starres Element (13) mit der verstellbaren Einheit (2) verbunden ist.
  3. Liegesessel nach Anspruch 1 oder 2, wobei die verstellbare Einheit (2) außerdem eine Fußstütze umfaßt.
  4. Liegesessel nach einem der obigen Ansprüche, wobei Mittel vorgesehen sind, um die verstellbare Einheit (2) relativ zum Rahmen in jeder gewünschten Position zu arretieren.
EP97922355A 1996-04-18 1997-04-18 Neigungsverstellbarer stuhl Expired - Lifetime EP0918480B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9608012 1996-04-18
GBGB9608012.2A GB9608012D0 (en) 1996-04-18 1996-04-18 Reclinable seating
PCT/US1997/006557 WO1997038608A1 (en) 1996-04-18 1997-04-18 Reclinable seating

Publications (3)

Publication Number Publication Date
EP0918480A1 EP0918480A1 (de) 1999-06-02
EP0918480A4 EP0918480A4 (de) 1999-08-25
EP0918480B1 true EP0918480B1 (de) 2004-11-17

Family

ID=10792256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97922355A Expired - Lifetime EP0918480B1 (de) 1996-04-18 1997-04-18 Neigungsverstellbarer stuhl

Country Status (4)

Country Link
EP (1) EP0918480B1 (de)
DE (1) DE69731639T2 (de)
GB (1) GB9608012D0 (de)
WO (1) WO1997038608A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024175924A1 (en) 2023-02-24 2024-08-29 Davidhugh Limited Reclinable seating assembly and method of use

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR360501A0 (en) * 2001-03-06 2001-04-05 Design Field Pty Ltd A chair
FR2990336A1 (fr) 2012-05-09 2013-11-15 Via Mecanisme d'articulation et siege articule dote d'un mouvement synchrone entre l'assise et le dossier
GB2526802B (en) 2014-06-02 2016-10-12 Davidhugh Ltd Seat recline mechanism, adjustable seating assembly, and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574307A (en) * 1944-01-31 1945-12-31 Arthur Reginald Turland Improvements in or relating to chairs and seats
US4341420A (en) * 1980-08-11 1982-07-27 Knowles William F Lounge chair
US4790599A (en) 1986-04-17 1988-12-13 Paul R. Goldman Pivoting recliner apparatus and method
NL8601457A (nl) * 1986-06-05 1988-01-04 Huka Bv Developments Rolstoel met kantelbaar zitgedeelte.
DE8706804U1 (de) * 1987-05-12 1987-06-25 Ferdinand Lusch Gmbh & Co Kg, 4800 Bielefeld Schwingsessel
US5280996A (en) * 1992-02-11 1994-01-25 American Heirlooms Gliding-style rocking chair
AT397760B (de) * 1992-02-18 1994-06-27 Hermann Huemer Sitzmöbel
US5427433A (en) * 1993-11-17 1995-06-27 Parma Corporation Rocking, gliding chair and mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024175924A1 (en) 2023-02-24 2024-08-29 Davidhugh Limited Reclinable seating assembly and method of use

Also Published As

Publication number Publication date
GB9608012D0 (en) 1996-06-19
WO1997038608A1 (en) 1997-10-23
DE69731639T2 (de) 2005-03-31
EP0918480A4 (de) 1999-08-25
DE69731639D1 (de) 2004-12-23
EP0918480A1 (de) 1999-06-02

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