WO2000076373A1 - Mecanisme de reglage de l'inclinaison d'un dossier de chaise - Google Patents

Mecanisme de reglage de l'inclinaison d'un dossier de chaise Download PDF

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Publication number
WO2000076373A1
WO2000076373A1 PCT/PL2000/000034 PL0000034W WO0076373A1 WO 2000076373 A1 WO2000076373 A1 WO 2000076373A1 PL 0000034 W PL0000034 W PL 0000034W WO 0076373 A1 WO0076373 A1 WO 0076373A1
Authority
WO
WIPO (PCT)
Prior art keywords
chair
rest frame
rest
detent
fact
Prior art date
Application number
PCT/PL2000/000034
Other languages
English (en)
Inventor
Slawomir WROŃSKI
Original Assignee
Wronski Slawomir
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 Wronski Slawomir filed Critical Wronski Slawomir
Priority to AU44408/00A priority Critical patent/AU4440800A/en
Publication of WO2000076373A1 publication Critical patent/WO2000076373A1/fr

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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
    • 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
    • A47C1/026—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 means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs

Definitions

  • the object of the invention is a mechanism for setting the inclination of a chair back-rest.
  • the mechanism according to the present invention may be applied in construction of chairs, especially those chairs of a special design, designated for instance, for office work, or for work at a computer, where, during long lasting, continuous activity, requiring seating position, ill fitted back-rest of the chair, which cannot be comfortably adapted to the work character and to the seating person anatomy, may lead to an excessive tiredness of the person, provoke his or hers spine pains and, in extreme cases, may be the cause of the person's backbone durable deformations.
  • Polish patent No 172592 There is known a construction of a mechanism for setting the inclination of a chair back-rest, described in Polish patent No 172592, in which a knob, fixed onto a threaded bush, and equipped with a spring, is applied, which mechanism settles and fixes, the position of a chair's back-rest in relation to chair seat.
  • Polish utility model No 57046 consisting of a set of fixing plates, which can be locked by means of a knob, the plates being situated in pivot connection between the chair backrest frame and its seat.
  • the mechanism according to the present invention comprises a detent unit, having at least two detent plates, which unit is operatively connected, by means of a manoeuvring system, to a manoeuvring lever serving also to set the height of the chair seat, as one of the elements, connected to the manoeuvring lever, pressures the valve of a gas spring, situated in the foot column of the chair.
  • the detent unit operatively engages the chair back-rest frame, which frame is equipped with a plurality of slots situated in the upper part of the back-rest frame rear plate.
  • the back-rest frame consists of at least two parts, upper and lower, connected by means of an arbor, in a manner enabling swivel movement of the one part in relation to the other.
  • the manoeuvring lever serving to set the height of the chair seat, is mounted in the seat carrier in a manner enabling its both, swinging about its axis and shifting along its axis.
  • the shifting of the lever is transferred by means of a mechanical linkage to the detent unit.
  • the mechanical linkage consists of a plate, rotationally but not shiftily mounted on the manoeuvring lever, which plate, when the manoeuvring lever is shifted, engages a cam, rotationally mounted on a roller, changing traverse movement of the plate in relation to the chair longitudinal axis into respective longitudinal movement of a linking member flexibly connected, by means of a spring, to the guiding element of the detent plates.
  • Lower part of the back-rest frame is connected to the seat carrier of the chair.
  • a spring On the arbor connecting the lower part to the upper part of the back-rest frame there is a spring whose deflection urges the upper part of the back-rest of the chair toward the seat of the chair.
  • the lower part of the back-rest frame is connected to the chair seat carrier in a detachable manner, enabling the back-rest frame to make a longitudinal shift along the chair carrier channel.
  • the mounting of the lower part of the back-rest frame in the seat carrier is realised in such a manner, that the roller, upon which the cam of the mechanical linkage is rotationally mounted, is equipped with an internal thread, into which a knob is threaded-in from the bottom of the seat carrier, passing though a longitudinal opening in the bottom part of the seat carrier.
  • fig. 1 is a plan view of the seat carrier with mounted-on the lower part of the back-rest frame (the upper part of the back-rest not shown)
  • fig. 2 is a more detailed plan view of the lower part of the back-rest frame with sectional view of the seat carrier
  • fig 3 is a sectional view of the chair foot with the seat carrier and the lower part of the back-rest frame.
  • Mechanism for setting the inclination of a chair back-rest comprises a back-rest frame upper part 1 connected by a swivel joint to back rest lower part 2 by means of an arbor 3.
  • Said lower part 2 is mounted shiftily in a channel 4 of the seat carrier 5.
  • a spring 6 is mounted, exerting a pressure upon said upper part 1 ⁇ which urges this upper part 1_towards the seat carrier 5.
  • One end of the spring 6 is engaged by a cross-piece 7 fixed between two side walls of the back-rest frame upper part 1, the other, is locked by a bracket 8 of the side wall of the lower part 2 of the back-rest frame.
  • a detent unit 9 is placed, comprising two detent plates 10 and 1 . and two push springs 12.
  • the detent plates 10 and JM pass through an opening 13 in the rear part of the frame lower part 2 and engage slots 14 in the rear plate of the upper part 1 of the back-rest frame.
  • the disengaging of the detent plates is carried-out by a guiding element 15, linked, by means of a spring 16 with a linking member 17, which, at other end, is engaged with incision 18 on the periphery of a cam 19.
  • the cam 19 is rotationally mounted upon a roller 20 which is hollow and internally threaded, and into which a knob 2 ⁇ is threaded-in.
  • a plate 27 which is fixedly mounted onto the manoeuvring lever 23, pressures the valve 24 of the chair foot 25 when the manoeuvring lever 23 is swung.
  • another plate 28 is rotationally but not shiftily mounted, which engages, by its one edge 29, a bracket 30 which is fixed to the periphery of the cam 19.
  • a spring 3_1 is situated, set at one of its ends in a hole 32 made in the bottom of the channel 4 and, at its other end, set in opening 33 in the plate 28.
  • a swing of the manoeuvring lever 23 about its axis, anticlockwise, causes that the plate 27 exerts pressure upon valve 24 of the chair foot column 25 enabling the setting the height of the seat. Shifting the manoeuvring lever 23 along its longitudinal axis, assisted by the action of the spring 3 L is carried-out stepwise, and the plate 28 can take only two positions, namely positions "A" or position "B". Shifting the lever 23 out, causes shifting the plate 28 into position "B", shifting the lever 23 in, shifts the plate 28 into position "A”.
  • the guiding element .15 stops exerting any pressure upon the detent plates 10 and H which, under pushing action of springs 12 are ready for locking the upper part 1 of the back-rest frame by inserting the one of the detent plates 10 or H into any of the slots 14 in the rear wall of the upper part 1 of the back-rest frame.
  • the lower part 2 of the back-rest frame can be shifted along the channel 4 of the seat carrier 5 on the stretch equal to the length of the opening 22 thus enabling to set the depth of the back-rest, and after the setting of the desired depth of the back rest is attained, it can be locked by screwing in the knob 21

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

L'invention concerne un mécanisme de réglage de l'inclinaison du dossier d'une chaise, comprenant un dispositif d'arrêt (9) comportant au moins deux plaques d'arrêt (10, 11) entrant en prise avec une série de fentes (14) situées dans la paroi postérieure de la partie supérieure (1) du cadre du dossier. Un levier de manoeuvre (23), destiné à fixer la hauteur de l'assise (5) de la chaise, est monté sur ladite assise (5) de manière à permettre la basculement du levier (23) autour de son axe ainsi que son déplacement le long de cet axe. Le basculement du levier (23) autour de son axe est transmis par une plaque (27) à une valve (24) du ressort à gaz situé dans la colonne (25) des pieds de la chaise. Le déplacement du levier (23) est transféré par une plaque (28) à une came (19), ce qui donne lieu à un changement de la direction du mouvement, puis à un élément de liaison (17) et à un élément guide (15) relié à l'élément de liaison (17) par un ressort (16), ainsi qu'aux plaques d'arrêt (10, 11) du dispositif d'arrêt (9). La partie supérieure (1) du cadre du dossier est reliée pivotante à la partie inférieure (2) dudit cadre au moyen d'un arbre (3) sur lequel est monté un ressort (6) forçant la partie supérieure (1) vers la partie inférieure du cadre du dossier. La partie inférieure (2) dudit cadre est montée coulissante dans un guide (4) de l'assise (5), et peut être verrouillé à l'aide d'une poignée (21).
PCT/PL2000/000034 1999-06-11 2000-05-12 Mecanisme de reglage de l'inclinaison d'un dossier de chaise WO2000076373A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44408/00A AU4440800A (en) 1999-06-11 2000-05-12 Mechanism for setting the inclination of a chair back-rest

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.333709 1999-06-11
PL33370999A PL333709A1 (en) 1999-06-11 1999-06-11 Mechanism for adjusting inclination angle of a chair backrest

Publications (1)

Publication Number Publication Date
WO2000076373A1 true WO2000076373A1 (fr) 2000-12-21

Family

ID=20074558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2000/000034 WO2000076373A1 (fr) 1999-06-11 2000-05-12 Mecanisme de reglage de l'inclinaison d'un dossier de chaise

Country Status (3)

Country Link
AU (1) AU4440800A (fr)
PL (1) PL333709A1 (fr)
WO (1) WO2000076373A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU770272B2 (en) * 1998-08-11 2004-02-19 Namba Press Works Co., Ltd. Reclining seat
WO2011091617A1 (fr) * 2010-01-29 2011-08-04 Chen Yucheng Plate-forme de siège à structure améliorée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384741A (en) * 1977-10-29 1983-05-24 Christof Stoll Gmbh & Co. Kg Tilting device for seating units
US4561693A (en) * 1983-06-10 1985-12-31 Knoll International, Inc. Back support tilt and seat and back support height control mechanism for a chair or the like
WO1997024955A1 (fr) 1996-01-08 1997-07-17 Imarc S.R.L. Dispositif de reglage de l'inclinaison de la portion siege de chaises en general
WO2000005997A1 (fr) * 1998-07-25 2000-02-10 Wronski Slawomir Mecanisme de blocage synchrone de la position angulaire d'un dossier et d'un siege par rapport au pied specialement conçu pour les chaises

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384741A (en) * 1977-10-29 1983-05-24 Christof Stoll Gmbh & Co. Kg Tilting device for seating units
US4561693A (en) * 1983-06-10 1985-12-31 Knoll International, Inc. Back support tilt and seat and back support height control mechanism for a chair or the like
WO1997024955A1 (fr) 1996-01-08 1997-07-17 Imarc S.R.L. Dispositif de reglage de l'inclinaison de la portion siege de chaises en general
WO2000005997A1 (fr) * 1998-07-25 2000-02-10 Wronski Slawomir Mecanisme de blocage synchrone de la position angulaire d'un dossier et d'un siege par rapport au pied specialement conçu pour les chaises

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU770272B2 (en) * 1998-08-11 2004-02-19 Namba Press Works Co., Ltd. Reclining seat
WO2011091617A1 (fr) * 2010-01-29 2011-08-04 Chen Yucheng Plate-forme de siège à structure améliorée

Also Published As

Publication number Publication date
AU4440800A (en) 2001-01-02
PL333709A1 (en) 2000-12-18

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