EP1256293A2 - Chair, particularly office-chair - Google Patents

Chair, particularly office-chair Download PDF

Info

Publication number
EP1256293A2
EP1256293A2 EP02010377A EP02010377A EP1256293A2 EP 1256293 A2 EP1256293 A2 EP 1256293A2 EP 02010377 A EP02010377 A EP 02010377A EP 02010377 A EP02010377 A EP 02010377A EP 1256293 A2 EP1256293 A2 EP 1256293A2
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
support
chair
link
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
EP02010377A
Other languages
German (de)
French (fr)
Other versions
EP1256293B1 (en
EP1256293A3 (en
Inventor
Peter Horn
Martin Potrykus
Armin Sander
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.)
Sander Armin
Original Assignee
ITO Design und Marketing Armin Sander
Sander Armin
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
Priority to DE10122946 priority Critical
Priority to DE2001122946 priority patent/DE10122946C1/en
Application filed by ITO Design und Marketing Armin Sander, Sander Armin filed Critical ITO Design und Marketing Armin Sander
Publication of EP1256293A2 publication Critical patent/EP1256293A2/en
Publication of EP1256293A3 publication Critical patent/EP1256293A3/en
Application granted granted Critical
Publication of EP1256293B1 publication Critical patent/EP1256293B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers

Abstract

In the case of a chair (1), in particular an office chair, with a backrest (5) articulated via a backrest support (4) to a seat support (3) and with a seat surface (6) which can be moved synchronously therewith, the front region (6a) of which is via a sliding guide (8) and its rear area (6b) is connected to the seat support (3) via a seat link (7), the distance (a) of the upper pivot point (D3) connecting the seat link (7) to the seat surface (6) Backrest (5) is smaller than the distance (b) of the lower pivot point (D2) connecting the seat link (7) to the seat support (3) from the backrest (5). A sliding guide (10) of the seat surface (6) in the backrest support (4) is provided for synchronization between the movement of the backrest (5) and the movement of the seat surface (6). <IMAGE>

Description

The invention relates to a chair, in particular office chair, with an over a backrest carrier articulated on a backrest and with one synchronously movable seat, the front area via a sliding guide and the rear area via a seat link with the seat support connected is.

Seating and especially chairs, in which their seat and their Moving the backrest synchronously are in different synchronous mechanisms Use. The synchronous mechanism serves to adjust the backrest change the position of the seat at the same time.

DE 42 19 599 A1 describes a chair or armchair with synchronously adjustable Backrest and seat inclination known. This chair is made using a on the seat in the rear area on the one hand and on the seat support on the other articulated seat handlebars with increasing inclination of the backrest raised, at the same time on the one hand with the seat and on the other the rocker arm rotatably connected to the backrest handlebars the seat pulls backwards. Because of this lifting of the seat in the back, the backrest facing area allows the user to recline the backrest slide forward on the seat. With a synchronous movement from the backrest and seat, however, the seat should at least extend as far backwards and downwards that tend to be when the user leans back applied or absorbed thrust exerted on the seat or the seat surface becomes.

The invention is therefore based on the object of a chair, in particular a chair Office chair, with a particularly suitable and easy-to-implement synchronizing mechanism specify.

This object is achieved according to the invention by the features of the claim 1. On the one hand, there is the distance between the seat link connecting the seat link and the seat upper pivot point to the backrest smaller than the distance of the Seat link with the lower pivot connecting the seat support to the backrest. As a result, there is no lifting with increasing backrest inclination, but advantageously a lowering of the seat. On the other hand Synchronization between the movement of the backrest and the movement of the Seat provided a sliding guide of the seat in the backrest link.

The invention is based on the consideration that with a chair or Seating with adjustable seat and adjustable backrest the adjustment options from the seat on the one hand and the backrest on the other can be viewed independently. The construction thus points initially two degrees of freedom. The backrest can be adjusted only a single degree of freedom when the articulation of the backrest on the seat support in a simple manner via the rigid with the backrest connected backrest support is realized on the seat support via a single Rotational axis is rotatably attached. In addition, the seat can be more complex Have adjustment options, being analogous to the adjustability of the backrest nevertheless it can be assumed that the setting options the seat can be written with a single degree of freedom. The movement The seat can do both a translation and a tilting movement or a combination of different forms of movement.

A coupling of the movements of the seat on the one hand and the backrest on the other hand, it should first ensure that every possible position a position of the seat is assigned to the backrest, as a result of which the entire Construction is limited to one degree of freedom. These requirements as well as a coupling mechanism that is both permanently stable and structurally simple through a sliding guide on the seat in the backrest handlebar Fulfills. This makes overall a particularly simple synchronous mechanism given.

For this purpose, the seat surface can be moved in a rigid axis connected to it be provided in the elongated hole provided in the backrest link. It is advantageous however, the upper pivot point common to the seat surface and the seat link in a corresponding slot in the backrest handlebar. The seat handlebar is included expediently concave in the direction of the seat.

The sliding guide provided in the front seating area can be adjusted in the seat support provided slot and one guided therein, rigid with the seat connected axis or be realized by a cylinder. Regardless of that advantageously an obliquely downward in the direction of the seat support Sliding guide provided. Due to the inclined arrangement of the length compensation element effective front sliding guide of the seat not just an undesirable lifting of the front edge of the seat when leaning back avoided the backrest, but rather a lowering of the The front edge of the seat is reached when the backrest is tilted back. This Lowering is more pronounced, the more the inclination of the sliding guide deviates from the horizontal and runs towards the vertical.

By the upper pivot point of the seat link connected to the seat outward inclination of the seat handlebars forward and down becomes more ergonomic In terms of comfort, the seat increases when you lean back the backrest mainly lowers in its rear area, while at the same time the front edge of the seat back and forth moved down. This gives the seat in the desired manner in its rear area a greater range of motion than in the front Area.

Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. In it show:

Fig. 1
a schematic side view of an office chair at rest,
Fig. 2
1 in the end position tilted backwards.

Corresponding parts are given the same reference numerals in both figures Mistake.

The chair 1 designed as an office chair according to FIG. 1 comprises a fixed one Dashed base 2 connected seat support 3. With the seat support 3, a backrest 5 is rotatably connected via a backrest support 4. The Backrest 5 is out of the rest position shown in FIG. 1 the reclined position or position shown in Fig. 2 tiltable backwards. The inclination of the backrest 5 is done by a rotation of one Pivot D1. For this purpose, the backrest support is firmly connected to the backrest 5 4 connected to the seat support 3 via an axis of rotation A, the fulcrum D1 is essentially given by the central axis of this axis of rotation A.

A seat surface 6 is also articulated on the seat support 3 via a seat link 7, which in the exemplary embodiment is convex in the direction of the seat 6 or is curved. The seat link 7 is with the seat support 3 via a swivel joint D2 and with the seat 6 in its rear area, i.e. in the backrest 5 facing rear seat half 6b rotatable via a swivel joint D3 connected. The pivot points D2 and D3 are in turn by corresponding ones Realized axes of rotation via which the seat link 7 with the seat support 3 on the one hand and is rotatably connected to the seat 6 on the other hand.

In the front area, ie in the front seat half 6a facing away from the backrest 5, the seat surface 6 is connected to the seat support 3 via a sliding guide 8. The sliding guide 8 can be designed in a manner not shown in the form of an elongated hole in the seat support 3 and a rigid axis 9 guided therein and connected to the seat surface 6 or — as shown — as a cylinder guided in the seat support 3. This is then rotatably connected to the seat 6 via the axis 9. The sliding guide 8 is inclined in the direction of the base 2. The angle of inclination α between the sliding guide 8 and the vertical V is α = (45 ± 30) °, α being preferably 45 °.

To synchronize the movement of the backrest 5 and the movement of the Seat 6 is in a sliding guide 10 provided in backrest support 4 guided. An elongated hole 11 is expediently provided in the backrest support 4, in which the pivot point D3 between the seat 6 and the seat link 7 forming axis 12 is guided. Alternatively, in this area, too Seat 6 a separate axis 12 may be provided, which is then not with the Pivot D3 coincides.

The backrest 5 is tilted backwards into that shown in Fig. 2 Positioned, the backrest support 4 is clockwise by this inclination rotated and thus the seat link 7 together with the seat 6 down emotional. The angle β between the seat link 7 and the vertical increases V from about 45 ° to 60 ° to about 90 °. The seat handlebar is in the end position 7 almost horizontal.

As a result of the inclination of the backrest 5 lowers together with the pivot point D3 the seat 6 in its rear area 6b. Moved at the same time the front edge 13 of the seat 6 backwards and downwards, the required length compensation is carried out by the front sliding guide 8. The resulting displacement of the front edge 13 of the seat 6 to in 1 point 13 'is illustrated by the length arrow 14. This Lowering the front seat edge 13 is less than lowering the rear Area 6b of the seat 6, so that it is lowered overall and clockwise is inclined.

In the position tilted backwards, the seat link 7 lies with the seat surface 6 connecting upper pivot D3 based on the seat 6 lower than that the backrest support 4 with the seat support 3 connecting pivot D1, while this is in the rest position below the pivot point D3.

LIST OF REFERENCE NUMBERS

1
chair
2
stand
3
seat support
4
backrest support
5
backrest
6
seat
6a
front half of the seat
6b
rear half of the seat
7
seat support
8th
sliding guide
9
axis
10
sliding guide
11
Long hole
12
axis
13
Front seat edge
14
arrow
A
axis of rotation
from
distance
α, β
tilt angle
D1 to D3
pivot point
V
vertical

Claims (5)

  1. Chair, in particular office chair, with a backrest (5) articulated via a backrest support (4) to a seat support (3) and with a seat surface (6) which can be moved synchronously, the front area (6a) via a sliding guide (8) and the rear Area (6b) is connected to the seat support (3) via a seat link (7),
    characterized in that the distance (a) of the upper pivot point (D3) connecting the seat link (7) to the seat surface (6) to the backrest (5) is smaller than the distance (b) of the seat link (7) to the seat support ( 3) connecting the lower pivot point (D2) to the backrest (5), and that for the synchronization between the movement of the backrest (5) and the movement of the seat surface (6) a sliding guide (10) of the seat surface (6) in the backrest support (4) is provided is.
  2. Chair according to claim 1,
    characterized in that the upper pivot point (D3) is guided in an elongated hole (11) provided in the backrest support (4).
  3. Chair according to claim 1 or 2,
    characterized in that in the front region (6a) of the seat surface (6) there is provided a sliding guide (8) which runs obliquely downwards in the direction of the seat support (3).
  4. Chair according to one of claims 1 to 3,
    characterized in that the seat link (7) is concavely curved in the direction of the seat surface (6).
  5. Chair according to one of claims 1 to 4,
    characterized in that when the backrest (5) is tilted backwards, the upper pivot point (D3) connecting the seat link (7) to the seat surface (6) is lower in relation to the seat surface (6) than the backrest support (4) with the Pivot (D1) connecting the seat support (3).
EP20020010377 2001-05-11 2002-05-08 Chair, particularly office-chair Not-in-force EP1256293B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10122946 2001-05-11
DE2001122946 DE10122946C1 (en) 2001-05-11 2001-05-11 Chair, especially office chair

Publications (3)

Publication Number Publication Date
EP1256293A2 true EP1256293A2 (en) 2002-11-13
EP1256293A3 EP1256293A3 (en) 2003-11-26
EP1256293B1 EP1256293B1 (en) 2007-01-03

Family

ID=7684422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020010377 Not-in-force EP1256293B1 (en) 2001-05-11 2002-05-08 Chair, particularly office-chair

Country Status (4)

Country Link
US (1) US6692075B2 (en)
EP (1) EP1256293B1 (en)
AT (1) AT349934T (en)
DE (2) DE10122946C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023981A1 (en) * 2006-05-22 2007-12-06 Wilkhahn Wilkening + Hahne Gmbh & Co. Kg chair
EP2792275A1 (en) 2013-04-18 2014-10-22 Thergofit GmbH Reclining chair

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10194640B4 (en) * 2000-10-16 2008-03-27 Kokuyo Co., Ltd. Chair that has a mechanism for supporting the seat part
NO317791B1 (en) * 2002-01-04 2004-12-13 Stokke As Mobile joint
DE10318759B3 (en) 2003-04-25 2004-07-29 Armin Sander Office chair with pivoted backrest support and synchronous mechanism for adjustment of seat position simultaneous with adjustment of backrest
US20090015050A1 (en) * 2004-03-13 2009-01-15 Hans Dehli Articulating chair
DE202005004880U1 (en) 2005-03-26 2006-08-03 Sander, Armin Chair, especially office chair
US7261368B1 (en) * 2006-02-27 2007-08-28 Todd Clausnitzer Ergonomic chair
EP2010025A4 (en) * 2006-04-24 2010-11-17 Humanscale Corp Chair having an automatically adjusting resistance to tilting
AT422315T (en) * 2006-10-06 2009-02-15 Stoll Giroflex Ag Synchron office chair
WO2011124027A1 (en) * 2010-04-07 2011-10-13 Lin Jingheng Chair furniture with free sliding-rolling linkage mechanism
EP2630894A4 (en) * 2010-10-19 2014-11-12 Okamura Corp Chair with armrest
DE102011104972B4 (en) 2011-06-08 2015-03-05 Haworth, Inc. Seating furniture, in particular office chair
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
WO2015161281A1 (en) 2014-04-17 2015-10-22 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
JP2018511404A (en) 2015-04-13 2018-04-26 スティールケース インコーポレイテッド Seating component
DE202017100480U1 (en) 2017-01-30 2018-05-03 Armin Sander Seating furniture, in particular office chair

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219599A1 (en) 1992-06-16 1993-12-23 Sdm Hansen Ag St Margrethen Synchronous adjustment control for chair backrest tilt - involves support frame with fixed attachment point for backrest, sliding bearing, pivot lever, drag lever

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CA806983A (en) * 1965-07-23 1969-02-25 Dufton Ronald Chair tilting mechanism
AT27763T (en) * 1983-10-05 1987-07-15 Giroflex Entwicklungs Ag Chair with tilting seat and backrest part.
DE3642796A1 (en) * 1986-12-15 1988-06-23 Eckhard Hansen office chairs for Punktsynchronverstelleinrichtung, SITZMOEBEL o. the like.
US4854641A (en) * 1989-01-23 1989-08-08 Reineman Richard G Adjustable chair
DE3916474C2 (en) * 1989-05-20 1992-02-13 Roeder Gmbh Sitzmoebelwerke, 6000 Frankfurt, De
US5288138A (en) * 1990-08-10 1994-02-22 Stulik Edward L Reclining chair
DE4038059A1 (en) * 1990-11-29 1992-06-04 Bock Martin Kunststoff Seat carrier for an office chair or the like
DE4135948C2 (en) * 1991-10-31 1993-12-23 Rolf Voelkle Chair, in particular office swivel chair
IL103477D0 (en) * 1992-10-20 1993-03-15 Paltechnica Nitzanim Office and like chairs
DE4312113C1 (en) * 1993-04-14 1994-10-27 Mauser Waldeck Ag Seating
DK0726723T3 (en) * 1993-11-01 1999-08-09 Labofa As Work chair with synchronous seat and back adjustment
US5826940A (en) * 1995-11-27 1998-10-27 Hodgdon; Dewey Reactive multi-position chair
DE19702328A1 (en) * 1997-01-23 1998-07-30 Comforto Gmbh Chair with synchronous mechanism
DE19726160A1 (en) * 1997-06-20 1998-12-24 Johannes Uhlenbrock Seating, in particular office swivel chair
WO2000022959A1 (en) * 1998-10-20 2000-04-27 Protoned B.V. Chair mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219599A1 (en) 1992-06-16 1993-12-23 Sdm Hansen Ag St Margrethen Synchronous adjustment control for chair backrest tilt - involves support frame with fixed attachment point for backrest, sliding bearing, pivot lever, drag lever

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023981A1 (en) * 2006-05-22 2007-12-06 Wilkhahn Wilkening + Hahne Gmbh & Co. Kg chair
US7770973B2 (en) 2006-05-22 2010-08-10 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Chair
EP2792275A1 (en) 2013-04-18 2014-10-22 Thergofit GmbH Reclining chair
CH707927A1 (en) * 2013-04-18 2014-10-31 Thergofit Gmbh Armchair.

Also Published As

Publication number Publication date
US20020167208A1 (en) 2002-11-14
DE50209126D1 (en) 2007-02-15
DE10122946C1 (en) 2003-01-30
US6692075B2 (en) 2004-02-17
EP1256293B1 (en) 2007-01-03
AT349934T (en) 2007-01-15
EP1256293A3 (en) 2003-11-26

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