EP1868467B1 - Dispositif permettant de regler l'inclinaison d'assise d'une chaise - Google Patents

Dispositif permettant de regler l'inclinaison d'assise d'une chaise Download PDF

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Publication number
EP1868467B1
EP1868467B1 EP06724023.4A EP06724023A EP1868467B1 EP 1868467 B1 EP1868467 B1 EP 1868467B1 EP 06724023 A EP06724023 A EP 06724023A EP 1868467 B1 EP1868467 B1 EP 1868467B1
Authority
EP
European Patent Office
Prior art keywords
seat
adjustment
support
adjustment mechanism
seat support
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.)
Not-in-force
Application number
EP06724023.4A
Other languages
German (de)
English (en)
Other versions
EP1868467A1 (fr
Inventor
Hermann Bock
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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 Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP1868467A1 publication Critical patent/EP1868467A1/fr
Application granted granted Critical
Publication of EP1868467B1 publication Critical patent/EP1868467B1/fr
Not-in-force legal-status Critical Current
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
    • 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
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • 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
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism

Definitions

  • the invention relates to a device for seat tilt adjustment of a chair, in particular an office chair.
  • High-quality office chairs are often equipped with a so-called synchronous mechanism, with the help of which the seat and backrest of the chair pivot backwards when the user reclines in a correlated movement.
  • various adjustment options are known for improving the ergonomics of office chairs, such as the height adjustment of the seat, back and armrest, the adjustability of the armrest in the longitudinal and transverse position and the longitudinal adjustment of the seat.
  • a chair for use on a ship.
  • the chair comprises a seat that can be tilted forward by a base plate secured to the deck by means of a stand. Im forward tilted state, the seat can be locked in several defined tilted positions.
  • locking pins are provided on the underside of the seat. The locking pins engage in corresponding openings, which are provided in laterally attached to the base plate, running alongside the seat tubes for this purpose. These locking pins can be moved out of the openings via a cable pull system.
  • the cable system is actuated by a provided on the underside of the seat, provided with a handle rod.
  • An object of the invention is to provide a seat tilt adjustment that allows a particularly safe and reliable adjustment of the seat tilt.
  • a basic idea of the invention is to pivot the seat support even beyond its basic position for the adjustment of the seat inclination of the chair.
  • the seat tilt adjustment can optionally be switched off in relation to one another. This allows a particularly flexible handling, depending on the application and user request.
  • the device according to the invention can optionally be installed in an otherwise conventional synchronous mechanism. Retrofitting is possible in other words optional.
  • Fig. 1 shows an exemplary synchronous mechanism 1, ie an assembly in the seat base of an office chair, which provides for a mutually coupled, a certain relative movement of the seat and backrest with each other bringing kinematics.
  • a base support 2 is placed on a chair column (not shown) on which on the one hand pivotable about a transverse axis, hingedly connected to the base support 2 seat support 3 and on the other hand also pivotable about a transverse axis, hingedly connected to the base support 2 backrest support are stored.
  • a number of arranged in chair longitudinal direction 6 successively locking lugs 7 are provided for this purpose, which serve in known and not explained in more detail manner of positioning and fastening of the seat on the seat support 3.
  • the backrest support 4 which extends in a conventional manner from the actual synchronizing mechanism 1 to the rear, carries on an upwardly extending arm (not shown), the backrest of the office chair.
  • the cheeks 8, 9 of the backrest support 4, which is substantially fork-shaped in plan view, are arranged on both sides of the base support 2.
  • Seat support 3 and backrest support 4 are coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the user to the backrest - induces a lowering movement of the rear edge of the seat down.
  • This correlated seat-back movement provides a significant comfort advantage and is desirable for orthopedic reasons.
  • operating lever 10, 11 are provided which serve to trigger the height adjustment of the chair column or for actuating the pivot mechanism.
  • the seat support 3 is connected at its front end portion 12 with the base support 2 via two pivot-sliding joints 13, cf. Fig. 7 in which one of the rotary-slide joints 13 is shown in section.
  • Each rotary sliding joint 13 consists on the one hand of a sliding member 14 connected to the seat support 3, which on the other hand rests in a sliding guide, which by two spaced apart sliding jaws 15, 16 is formed, which are firmly connected to the base support 2.
  • the upper sliding jaw 15 abuts the seat carrier 3 at a stop element 17 explained in more detail later. This avoids that the seat support 3 performs over the substantially horizontal basic position extending beyond pivotal movement forward.
  • Both sliding jaws 15, 16 have spherical guide surfaces, which allow the sliding element 14 and thus also the seat carrier 3 connected to the sliding element 14 to be able to follow the pivoting movement back downwards.
  • the trained in the manner of a rail sliding member 14 of the seat support 3 moves in other words with its top and its underside on the guide surfaces of the upper and lower sliding block 15, 16 along, wherein the sliding member 14 in any pivotal state between the upper and lower sliding block 15, 16 is particularly safe.
  • Other types of joints can also be used.
  • the seat support 3, an inventive adjusting mechanism 18 is associated.
  • the adjusting mechanism 18 allows, as explained in more detail below, a safe and reliable seat tilt adjustment.
  • an actuating lever 19, which is like the other operating lever 10, 11 is arranged laterally on the synchronizing mechanism 1 and can be operated by pulling out or pushing in the direction of actuation 20.
  • an inclination of the seat support 3 forward by an angle ⁇ of about 3 degrees is possible with the seat tilt adjustment. Due to the seat / backrest correlation, this corresponds to a pivoting of the Backrest at an angle ⁇ of about 8 degrees, cf. Fig. 3 ,
  • These angles are merely exemplary and serve to illustrate the operation. They depend in particular on the length of the stop elements 17 in the adjusting mechanism 18 or the available travel path and on the specific design of the synchronizing mechanism 1.
  • the adjusting mechanism 18 consists essentially of a base plate 21, on which the actual elements of the mechanism are mounted, and a cover plate 22. In the assembled state, the base plate 21 of the adjusting mechanism 18 is covered with the cover plate 22, which with screws 23 on the base plate 21 is attached.
  • the adjusting mechanism 18 comprises two prism-shaped stop elements 17, 17 ', which are in guide channels 24 of the adjusting mechanism 18 eino, which extend in the longitudinal direction 6. On the lower sides 59 of the stop elements 17, 17 'locking openings are provided (not shown), which cooperate in the "retracted” state with locking knobs 60 which are arranged in the guide channels 24. As a result, the position of the stop elements 17, 17 'is additionally secured in this state.
  • double-T-shaped buffer elements 25 are used, which consist of a softer plastic material, such as rubber.
  • the front sides 26 of the stop elements 17 are completely covered by the buffer elements 25.
  • the stop elements 17 have on their backs 27 beveled engagement surfaces 28 which point toward each other and in the direction of the center of the adjustment mechanism 18.
  • two angled wedge elements 29, 30 with wedge surfaces 31 which are attached to their outer, mutually repellent ends, on the engagement surfaces 28 of the stop elements 17 at.
  • the wedge elements 29, 30 are in turn in substantially in the direction perpendicular to the longitudinal direction 6 extending transverse direction 32 extending guide channels 33 of the adjusting mechanism 18 and are connected to each other via a coupling mechanism 34 described in more detail below.
  • One of the wedge elements 29 has a recess 35 provided with oblique side walls, which serves as a receptacle for the one end 42 of a substantially L-shaped steel spring 36.
  • the bent end 42 of the steel spring 36 is inserted into an opening of the wedge member 29 and is rotatably fixed there.
  • the steel spring 36 is connected to the actuating lever 19.
  • the actuating lever 19 is made in two parts and consists essentially of a slightly S-shaped curved actuating arm 37, at the end of an operating knob 38 is mounted and fixed to the actuating arm 37 with screws 23 actuating slide 39, in which the other end 40 of the steel spring 36 attached is.
  • the actuating slide as well as the wedge element 29 a Opening 41, in which the bent other end 40 of the steel spring 36 is inserted.
  • the steel spring 36 is located in a fork-shaped guide member 43 on the actuating slide 39, which also serves as anti-rotation.
  • the actuating slide 39 is guided in a transverse guide 58 in the base plate 21 of the adjusting mechanism 18.
  • the actuating slide 39 has a central opening 44, in which a snap element 45 is arranged.
  • the snap element 45 serves to detect the seat tilt adjustment in the horizontal basic position or in the tilting position and is designed such that it cooperates with two correspondingly provided latching recesses 46, 47 latching, which are arranged in the base plate 21 of the adjusting mechanism 18, cf. Fig. 4 ,
  • the latched snap element 45 can be released in each case by simple actuation of the actuating element 19 from its latching.
  • This wedge element 29 which has a wedge surface 31 at its end facing the abutment element 17, serves as a driving wedge of a wedge gear and displaces the abutment element 17, which now assumes the function of a driven component, perpendicular to the actuation direction 20 in the longitudinal direction 6.
  • the stop element 17 is displaced in its guide channel 24 by the wedge element 29 arranged perpendicular thereto.
  • the wedge angle is preferably 45 degrees.
  • the adjusting mechanism 18 For a particularly reliable function of the adjusting mechanism 18, it is provided to use two stop elements 17, 17 ', so that a stop on the corresponding sliding jaws 15 takes place in both rotary-slide joints 13 of the seat support 3.
  • the wedge element 17 acted upon directly by the steel spring 36 is coupled to a second wedge element 30, which acts on the opposite stop element 17 'in the same way.
  • a movement of the opposite wedge member 30 against the original operating direction 20 is required.
  • a deflection of the movement takes place with the aid of a rotatably mounted on the base plate 21 of the adjusting mechanism 18 guide member 49, which serves as a kind of bridge.
  • the guide member 49 has for this purpose in the middle a bearing opening 61 for receiving a mounted on the base plate 21 of the adjusting mechanism 18 pivot 62.
  • the two wedge elements 29, 30 have at their wedge surfaces 31 opposite ends perpendicular to the direction of actuation 20 extending pin 50, the protrude into slots 51 of the guide element 49 and thus enable a mechanical coupling.
  • the second L-leg 57 follows the first L-leg 56 abruptly and causes the movement of the wedge elements 29, 30 in the in Fig. 5 shown position, whereby the stop elements 17, 17 'can retract.
  • This safety feature ensures that a sudden change in the tilt adjustment is not possible. The transition from one position to the other always requires a "relief" of the seat support. 3

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)

Claims (9)

  1. Dispositif pour le réglage d'inclinaison de l'assise d'une chaise, notamment d'une chaise de bureau,
    - avec un support de base (2),
    - avec un support d'assise (3) connecté au support de base (2) au moyen d'un joint articulé coulissant (13) et
    - un mécanisme de réglage (18) à actionner au moyen d'un levier d'actionnement (19) pour régler l'inclinaison de l'assise où le mécanisme de réglage (18) est formé tellement qu'un mouvement pivotant en avant du support d'assise (3) est possible au choix au-delà d'une position de base sensiblement horizontale.
  2. Dispositif suivant la revendication 1 dont le joint articulé (13) est muni d'un élément coulissant (14) connecté au support d'assise (3) et d'un guide coulissant (15, 16) connecté au support de base (2), dans lequel l'élément coulissant (14) est positionné.
  3. Dispositif suivant la revendication 1 ou 2 où le mécanisme de réglage (18) est formé tellement que la course (48) du support d'assise (3) dans le joint articulé (13) est modifié en actionnant le mécanisme de réglage (18).
  4. Dispositif suivant les revendications 1 à 3 où le mécanisme de réglage (18) fait partie du support d'assise (3).
  5. Dispositif suivant les revendications 1 à 4 où le mécanisme de réglage (18) comprend au moins un élément de butée réglable (17, 17').
  6. Dispositif suivant la revendication 5 où le au moins un élément de butée réglable (17, 17') est conçu pour buter contre le support de base (2), en particulier sur le guide coulissant (15, 16) du support de base (2).
  7. Dispositif suivant la revendication 5 ou 6 où le mécanisme de réglage (18) est muni d'un engrenage à coin pour actionner le au moins un élément de butée réglable (17, 17').
  8. Dispositif suivant la revendication 7 où le mécanisme de réglage (18) est muni d'un élément à ressort (36) à actionner au moyen d'un levier d'actionnement (19) pour déplacer un coin propulseur (29, 30) de l'engrenage à coin.
  9. Dispositif suivant la revendication 8 où l'élément à ressort (36) peut être actionné sans qu'une modification du au moins un élément de butée (17, 17') en résulte tant qu'une pression est exercée sur le support d'assise (3).
EP06724023.4A 2005-04-13 2006-04-05 Dispositif permettant de regler l'inclinaison d'assise d'une chaise Not-in-force EP1868467B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005017143A DE102005017143B4 (de) 2005-04-13 2005-04-13 Vorrichtung zur Sitzneigeverstellung eines Stuhles
PCT/EP2006/003068 WO2006108536A1 (fr) 2005-04-13 2006-04-05 Dispositif permettant de regler l'inclinaison d'assise d'une chaise

Publications (2)

Publication Number Publication Date
EP1868467A1 EP1868467A1 (fr) 2007-12-26
EP1868467B1 true EP1868467B1 (fr) 2014-12-17

Family

ID=36570639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06724023.4A Not-in-force EP1868467B1 (fr) 2005-04-13 2006-04-05 Dispositif permettant de regler l'inclinaison d'assise d'une chaise

Country Status (6)

Country Link
US (1) US20080252125A1 (fr)
EP (1) EP1868467B1 (fr)
JP (1) JP2008535592A (fr)
CN (1) CN101160076A (fr)
DE (1) DE102005017143B4 (fr)
WO (1) WO2006108536A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH701715A2 (de) * 2009-08-26 2011-02-28 Vitra Patente Ag Mechanik für einen Stuhl.
GB201014953D0 (en) * 2010-09-08 2010-10-20 Birkbeck Hilary R Slide chair action
CN103479112A (zh) * 2013-09-24 2014-01-01 浙江永艺家具股份有限公司 一种转椅底盘
JP6358166B2 (ja) * 2015-05-11 2018-07-18 コクヨ株式会社 椅子
JP6287948B2 (ja) * 2015-05-11 2018-03-07 コクヨ株式会社 椅子
JP6307042B2 (ja) * 2015-05-11 2018-04-04 コクヨ株式会社 椅子
CN209018141U (zh) * 2018-05-11 2019-06-25 杭州中泰实业集团有限公司 一种改变扭簧角度的螺旋调节转椅托盘
PL3701839T3 (pl) * 2019-02-27 2023-03-13 L&P Property Management Company Mechanizm sterowania krzesłem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418731A1 (fr) * 1989-09-16 1991-03-27 Rolf Völkle Chaise
WO1995012338A1 (fr) * 1993-11-01 1995-05-11 Labofa A/S Chaise de bureau a reglage synchrone du siege et du dossier
JPH09322837A (ja) * 1996-06-06 1997-12-16 Takano Co Ltd 椅子の座板スライド装置
WO2003039945A1 (fr) * 2001-11-06 2003-05-15 Matthew Stephen Frisina Siege de bateau pivotant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429917A (en) * 1981-04-29 1984-02-07 Hauserman Inc. Int. Furniture & Textile Division Chair
JPS59207112A (ja) * 1983-05-10 1984-11-24 メ−コ−工業株式会社 椅子
DE8401000U1 (de) * 1984-01-14 1984-04-05 Mauser Waldeck AG, 3544 Waldeck Drehsessel
US5282670A (en) * 1992-04-20 1994-02-01 Steelcase Inc. Cable actuated variable stop mechanism
AT402602B (de) * 1995-02-28 1997-07-25 Eckhard Hansen Dipl Ing Stuhl stuhl
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
GB9802447D0 (en) * 1998-02-04 1998-04-01 Unit Press Limited Mechanism for chair
IT1306230B1 (it) * 1998-04-27 2001-06-04 Donati Spa Supporto inclinabile per sedia
DE10125994A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418731A1 (fr) * 1989-09-16 1991-03-27 Rolf Völkle Chaise
WO1995012338A1 (fr) * 1993-11-01 1995-05-11 Labofa A/S Chaise de bureau a reglage synchrone du siege et du dossier
JPH09322837A (ja) * 1996-06-06 1997-12-16 Takano Co Ltd 椅子の座板スライド装置
WO2003039945A1 (fr) * 2001-11-06 2003-05-15 Matthew Stephen Frisina Siege de bateau pivotant

Also Published As

Publication number Publication date
JP2008535592A (ja) 2008-09-04
CN101160076A (zh) 2008-04-09
WO2006108536A1 (fr) 2006-10-19
DE102005017143A1 (de) 2006-10-19
EP1868467A1 (fr) 2007-12-26
US20080252125A1 (en) 2008-10-16
DE102005017143B4 (de) 2007-06-21

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