EP1874160A1 - Siege, notamment chaise de bureau - Google Patents

Siege, notamment chaise de bureau

Info

Publication number
EP1874160A1
EP1874160A1 EP06742717A EP06742717A EP1874160A1 EP 1874160 A1 EP1874160 A1 EP 1874160A1 EP 06742717 A EP06742717 A EP 06742717A EP 06742717 A EP06742717 A EP 06742717A EP 1874160 A1 EP1874160 A1 EP 1874160A1
Authority
EP
European Patent Office
Prior art keywords
seat
seating
movement
back element
user
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.)
Granted
Application number
EP06742717A
Other languages
German (de)
English (en)
Other versions
EP1874160B1 (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 EP1874160A1 publication Critical patent/EP1874160A1/fr
Application granted granted Critical
Publication of EP1874160B1 publication Critical patent/EP1874160B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the invention relates to seating, in particular an office chair.
  • So-called synchronous mechanisms are known from the prior art. These are assemblies in the seat base of an office chair that enable a correlated movement of the seat backrest.
  • the seat support and backrest support are articulated in such a way that a pivoting movement of the backrest to the rear, as can be caused, for example, by the chair user leaning against the backrest, induces a lowering movement of the rear edge of the seat downward. This brings a considerable comfort advantage and is desirable for orthopedic reasons.
  • a disadvantage of these synchronous mechanisms is their comparatively complicated mechanical structure. As a result, synchronous mechanisms are also comparatively expensive to manufacture.
  • An object of the present invention is to provide a solution which, with a comparatively low design effort, provides a comfort advantage which is comparable to that of a synchronous mechanism.
  • a piece of seating furniture which consists of only two main assemblies, namely a preferably fixed seat element and a back element, the seat element having a seat surface and the back element being pivotable and articulated about a transverse axis the seat element is connected.
  • the seat surface is designed such that when the backrest is pivoted backwards, as is caused, for example, by the user leaning against the back element, the movement of the
  • the seat surface has at least two in
  • any elastic configuration of the seat no matter what material is used for it.
  • any other elastic materials can in principle also be used, for example spring assemblies or combinations of materials such as foam in conjunction with silicone cushions.
  • the use of two-zone foam is also possible, for example.
  • At least one rear seating area has upholstery which enables the user to sink in more than a front seating area. If the user moves backwards and the seat is stressed in the rear area, this occurs simultaneously
  • the rear seating area is designed in such a way that when the backrest is loaded, the pelvis of the user slides into the upholstery in the manner of rolling. This results in a particularly synchronous movement between
  • the back element is connected to the seat element via a pivot axis which is arranged in the longitudinal direction of the chair before the chair column is attached to the seat element.
  • the position of the pivot axis contributes significantly to the fact that an ergonomically very advantageous sitting is possible.
  • spring elements are provided for pretensioning the back element, which are arranged essentially horizontally in the seat element, a particularly flat design can be achieved.
  • spring elements are depending on the construction any springs, such as tension or compression springs, can be used.
  • Fig. 1 is a perspective view of the seat element without a seat (first spring position)
  • Fig. 2 is a section through the seat element (first
  • Fig. 5 shows a further section through the seat element
  • the office chair according to the invention comprises a seat element 1 and a back element 2.
  • the essentially horizontally arranged seat element 1 is pivotally connected to the back element 2 at a bearing point 3.
  • the back element 2 is articulated and carried out in the area of the underside 4 of the seat element 1, for example when the user is leaning against the back element 2, a pivoting movement 5 about the pivot axis 6 which runs through the pivot bearing and which runs transversely to the longitudinal direction 7 of the chair .
  • the back element 2 can comprise a backrest in the form of a shell, a net or the like.
  • the back element 2 can be transferred from its normal position shown in the figures into a rear position and back.
  • a spring force setting 8 is provided, the exact functioning of which will be explained later.
  • the seat element 1 comprises on the one hand the actual seat support with the articulation of the back element 2 and the spring force setting 8. Because the fulcrum of the mechanism is arranged very close under the seat surface 9, the sequence of movements when the back element 2 is moved backwards is similar to that of one Synchronous mechanism. In particular, the so-called shirt pull-out effect is reduced. In other words, the horizontal and vertical position of the pivot axis 6 relative to the seat element 1 or to the back element 2 is particularly crucial for the movement sequence that can be achieved.
  • a cone receptacle 11 is provided approximately in the center of the seat element 1 and serves to receive the upper end of a chair column, for example a gas spring (not shown).
  • the base body 12 of the seat element 1 essentially consists of a plastic plate with a number of wall elements 14 extending in the longitudinal direction 7 of the chair and the transverse direction 13 of the chair. These serve not only to achieve the required stability of the seat element 1. At the same time, a significant material saving is possible.
  • the wall elements 14 also partially perform other tasks. For example, they serve as a guide or holding element for the trigger rod 15 for height adjustment of the gas spring, the trigger rod 15 being actuated via a button 16 which is also integrated in the base body 12.
  • the wall elements 14 also serve to hold and guide the drive shaft 17 of the spring force setting 8, an actuating element (not shown in FIG. 1), for example in the form of a handwheel, being attached to the free end 18 of the drive shaft 17.
  • a spring arrangement is used to return the back element 2 from its rear position to its normal position.
  • the spring arrangement comprises two compression springs 19 with a circular cross-section, which lie in corresponding spring receptacles 20 provided in the base body 12.
  • Spring force setting 8 can be changed, the compression springs 19 lie essentially horizontally in the seat element 1, which results in an extremely flat design leaves.
  • the low overall height enables a visually appealing design of the chair.
  • the use of a wide variety of chair columns or gas springs is possible, so that special requirements for seat heights can also be met.
  • the position of the two compression springs 19 is changed via a U-shaped round steel 21, the U-legs 22 of which are inserted into the two round springs 19.
  • the compression springs 19 are raised or lowered on one side via the movement of the “U-base” 23 of the round steel 21 in the deflection direction 24, while the opposite ends of the compression springs 19 remain in their starting position by fixing the ends 25 of the round steel 21 on the base body 12 the rounded ends 25 lie in a kind of ball socket 26 on the base body 12.
  • pivot pins 28 attached to the shaft 27 and extending from the underside 4 through the base body 12 to the round steel bar 21 press against the compression springs 19 and thus provide an operative connection between the compression springs 19 and the back element 2 ago.
  • the pivot lugs 28 are U-shaped as a guide such that they receive the U-legs 22 of the round steel 21.
  • the rotation of the drive shaft 17 causes a worm wheel 29 attached to it to rotate, which results in a rotation of a toothed wheel 30 engaging therein.
  • the gearwheel 30 is arranged on a thread axis 31 running in the deflection direction 24, that is to say perpendicularly, on which a thread is used Boom 32 is attached.
  • the arm 32 has a U-shaped driver 33 which carries the round steel 21 up or down, depending on the direction in which the drive shaft 17 is rotated.
  • the upholstery 34 of the seat 9, cf. Fig. 4, consists of molded foam and is attached to a seat plate 39 which can be mounted on corresponding receptacles 40 of the base body 12. Due to the special design of the padding 34, the user rolls backwards as it were when the back element 2 is moved. It slides into the foam. The foam must therefore be free in the direction of the seat end 35 in order to be able to expand to the rear. In order to achieve this, an open design of the upholstery 34, without rearward limiting elements, is preferred.
  • the seat surface 9 is divided into two different seat areas 36, 37 arranged one behind the other in the longitudinal direction 7 of the seat, which differ in the way they are upholstered.
  • the shape of the seat 9 used in the present example is the front one Seat area 36, which accounts for approximately 30% to 40% of the total length of the upholstery 34, is provided with a “normal” upholstery thickness, while the rear seat area 37 (between 70% and 60% of the total length) is provided with a variable upholstery 34 which In the example shown, the upholstery thickness of the rear seat area 37 is increased by at least 20 mm compared to the upholstery thickness of the front seat area 36.
  • the manner of transition from the front seat area 36 to the rear seat area 37 is preferably very soft and flowing and without edges.
  • transition area 38 in the form of an elongated lying S.
  • the transition from the front seating area 36 to the rear seating area 37 is positioned in such a way that in a normal ("average ") posture essentially strains the front seating area. If the backrest is then loaded, the user's pelvis rolls over the lying S into the rear seating area. The user thus follows the movement of the

Abstract

L'invention concerne un siège, notamment une chaise de bureau. L'invention vise à assurer un confort comparable à celui d'un mécanisme synchrone pour un coût de réalisation comparativement faible. A cet effet, le siège selon l'invention comprend un élément d'assise (1) présentant une surface d'assise (9), ainsi qu'un élément dossier (2) pouvant pivoter autour d'un axe transversal (6) et relié de manière articulée à l'élément d'assise (1). La surface d'assise (9) de l'élément d'assise (1) est réalisée de sorte que, en cas de pivotement de l'élément dossier (2) vers l'arrière, un utilisateur exécute un mouvement reproduisant en soi le mouvement de l'élément dossier (2). Cela permet un mouvement du corps de l'utilisateur qui est synchrone par rapport au mouvement de l'élément dossier, et ce sans que l'ensemble de l'élément d'assise accomplisse un tel mouvement synchrone.
EP06742717A 2005-04-28 2006-04-27 Siege, notamment chaise de bureau Expired - Fee Related EP1874160B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005020247A DE102005020247B3 (de) 2005-04-28 2005-04-28 Sitzmöbel, insbesondere Bürostuhl
DE202005006980U DE202005006980U1 (de) 2005-04-28 2005-04-28 Sitzmöbel, insbesondere Bürostuhl
PCT/EP2006/003909 WO2006114311A1 (fr) 2005-04-28 2006-04-27 Siege, notamment chaise de bureau

Publications (2)

Publication Number Publication Date
EP1874160A1 true EP1874160A1 (fr) 2008-01-09
EP1874160B1 EP1874160B1 (fr) 2012-08-08

Family

ID=44123298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06742717A Expired - Fee Related EP1874160B1 (fr) 2005-04-28 2006-04-27 Siege, notamment chaise de bureau

Country Status (6)

Country Link
US (1) US20080100119A1 (fr)
EP (1) EP1874160B1 (fr)
JP (1) JP2008538950A (fr)
CN (1) CN101166443B (fr)
DE (2) DE202005006980U1 (fr)
WO (1) WO2006114311A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9458905B2 (en) 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010028412A1 (fr) * 2008-09-15 2010-03-18 Bene Ag Dispositif pour régler la résistance au pivotement d'un dossier
ES2426021B1 (es) * 2012-04-16 2014-09-10 Grupo Forma 5, S.L. Sistema de regulación de la tensión de un respaldo de silla
CN103799741B (zh) * 2012-11-01 2017-06-20 奥弗·巴查 座椅靠背，座椅装置及方法
CN105377077B (zh) * 2013-06-07 2020-03-17 株式会社冈村制作所 椅子
US10945529B2 (en) * 2017-02-03 2021-03-16 Zhejiang Sunon Furniture Manufacture Co., Ltd. Chair
DE102020101033A1 (de) 2020-01-17 2021-07-22 Bock 1 Gmbh & Co. Kg Träger für ein Sitzmöbel
DE102020110707A1 (de) * 2020-04-20 2021-10-21 Bock 1 Gmbh & Co. Kg Sitzmöbel

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US1836630A (en) * 1928-07-16 1931-12-15 Thum Martin Chair
CH146493A (de) * 1930-04-26 1931-04-30 Moebelfabrik Horgen Glarus Vor Möbel mit angelenkter Rückenlehne.
US2770292A (en) * 1951-09-24 1956-11-13 William S Hamilton Spring-back chair
US2833340A (en) * 1955-09-12 1958-05-06 Shapiro Jacob Posture chair
DE2736550A1 (de) * 1977-08-13 1979-02-22 Grammer Willibald Fa Vorrichtung zur verstellung der neigung des sitzpolsters bei einem fahrersitz, buerostuhl, drehsessel o.dgl.
DE3201650C2 (de) * 1982-01-21 1986-07-03 Fa. Willibald Grammer, 8450 Amberg Reisesitz
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JPS6272307A (ja) * 1985-09-26 1987-04-02 天龍工業株式会社 背当傾倒式座席の座面自動変形装置
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DE3634055A1 (de) * 1986-10-07 1988-04-14 Inaba Seisakusho Ltd Sitzmoebel
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DE3918502A1 (de) * 1989-06-07 1990-12-13 Keiper Recaro Gmbh Co Fahrzeugsitz, insbesondere fluggastsitz
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DE4205627A1 (de) * 1992-02-25 1993-08-26 Bruenig Matthias Prof Neigevorrichtung fuer sitzlehnen
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CA2174511A1 (fr) * 1993-11-01 1995-05-11 Willi Hensel Chaise de bureau a reglage synchrone du siege et du dossier
DE4341070A1 (de) * 1993-12-02 1995-06-08 Hansen Fritz As Gepolsterter Sitz für einen Bürostuhl
NL9400473A (nl) * 1994-03-25 1995-11-01 Adrianus Henricus Marinus Joha Samenstel bevattende tenminste twee ondersteunende delen, stoel, tafel of prothese, bevattende een dergelijk samenstel.
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DE10126001A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Vorgespannte Federanordnung, insbesondere zur Federbeaufschlagung von Synchronmechaniken von Bürostühlen
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Title
See references of WO2006114311A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9458905B2 (en) 2012-09-20 2016-10-04 Steelcase Inc. Spring assembly and method

Also Published As

Publication number Publication date
JP2008538950A (ja) 2008-11-13
CN101166443B (zh) 2012-01-04
US20080100119A1 (en) 2008-05-01
CN101166443A (zh) 2008-04-23
EP1874160B1 (fr) 2012-08-08
WO2006114311A1 (fr) 2006-11-02
DE202005006980U1 (de) 2006-09-07
DE102005020247B3 (de) 2006-11-30

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