EP0900035B1 - Stuhl mit synchronmechanik - Google Patents
Stuhl mit synchronmechanik Download PDFInfo
- Publication number
- EP0900035B1 EP0900035B1 EP98903022A EP98903022A EP0900035B1 EP 0900035 B1 EP0900035 B1 EP 0900035B1 EP 98903022 A EP98903022 A EP 98903022A EP 98903022 A EP98903022 A EP 98903022A EP 0900035 B1 EP0900035 B1 EP 0900035B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- backrest
- backrest support
- support
- chair
- 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
Links
- 230000004075 alteration Effects 0.000 claims 3
- 230000001360 synchronised effect Effects 0.000 description 16
- 230000008878 coupling Effects 0.000 description 15
- 238000010168 coupling process Methods 0.000 description 15
- 238000005859 coupling reaction Methods 0.000 description 15
- 230000037396 body weight Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- A47C1/03294—Reclining 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
Definitions
- the invention relates to a chair with synchronous mechanism from the type specified in the preamble of claim 1.
- synchronous mechanism is an articulated coupling between Seat and backrest such that a change in inclination the backrest automatically with a change in inclination the seat, and vice versa. This improves the seating comfort, because with an upright posture a about horizontal adjustment of the seat and when leaning back Back posture in a sloping position the seat is desired.
- Chairs with synchronous mechanism are known in numerous versions, for example the publications DE 30 33 953 C2, DE 36 08 718 C3 and DE 38 34 614 A1 can be called.
- the relationship between the coupled inclination changes of the seat and the backrest i.e. the so-called synchronous course the mutual distances between the pivot axes and articulation points certainly.
- a chair with synchronous mechanism is known from US-A-5423594, where by changing the length of the backrest support with the base connecting the chair the synchronous ratio can be changed. By changing the length the handlebar also changes the angle between the backrest and seat in the normal position of the See.
- US-A-5560682 discloses a chair with synchronous mechanism, in which also changes the synchronous process can that the geometry of the backrest support and the Basic structure of the handlebar connection connecting the chair is changed, but only by changing elements the handlebar connection is possible.
- a chair is known, optionally with or can be executed without synchronous mechanics depending on whether there is a connecting link between the seat and backrest support or between the seat and the base structure of the Chair is arranged.
- the choice between these two positions the handlebar must be made by the manufacturer, a Adjustment by the user is not provided.
- the invention has for its object a chair mentioned type so that the synchronous course, i.e. the relationship between the coupled slope changes of the seat and backrest by the user in a simple manner can be changed.
- the basic idea of the invention is to determine the relationship between the coupled changes in inclination of the seat and backrest not by changing the effective length of one that couples them Handlebar change, but by moving the Handlebar relative to the seat and backrest pivot axis. Because the joints of the handlebar in the slots of the seat and the backrest support are slidably guided and these slots in the normal position of the chair is approximately horizontal and thus is also approximately parallel to each other, by Moving the handlebar in the slots does not incline the backrest changes relative to the seat in the normal position, but only the relationship between the changes in inclination of the backrest and seat.
- a chair column 1 On a chair column 1 is rotatable in a conventional manner and a seat support 3 adjustable in height.
- the area of the seat support 3 is about a horizontal axis 5 the seat 7 rotatably mounted.
- This seat pivot axis 5 is located preferably below the front part of the seat 7.
- a second horizontal axis of rotation on the seat support 3 9 formed around which a backrest support 11 rotatably mounted is who carries a backrest 13.
- the backrest support 11 is with the seat 7 by a coupling link 15 articulated coupled.
- the coupling link 15 an upper journal 15a, which is in an approximately horizontal Slot 17 of the seat 7 engages, and a lower Bearing pin 15b, which is in an approximately horizontal Slot 19 of the backrest support 11 engages.
- the bearing journals 15a, 15b can be moved in the slots 17, 19, and the position of the coupling link 15 in the longitudinal direction the slots 17, 19 can by means of a screw spindle 21 are adjusted and fixed, which are mounted on the seat support 7 and is rotated by the user with a handwheel 23 can.
- the coupling link 15 with its journals 15a and 15b and the slots 17, 19 in pairs on both sides of the vertical central plane the seat can be provided. Alternatively, they can also simply provided in the middle plane of the chair his.
- the coupling link 15 moved in the longitudinal direction of the slots 17, 19 and thereby the distance between those formed by the journals 15a, 15b Hinge points from the seat and backrest pivot axis 5 and 9 can be changed.
- the coupling link 15 shown in its left or front end position in which the pivot pin 15a of the pivot axis 5 of the seat 7 has the smallest possible distance A. If in this position the coupling arm 15 of the backrest support 11 with the backrest 13 by the angle ⁇ backwards into the dashed position 11 ', 13' shown is pivoted, the seat 7, since he with the backrest support 11 through the coupling link 15 is coupled by the angle ⁇ after pivoted below.
- the ratio between the angles ⁇ and ⁇ depends on the distance of the coupling link 15 from the Swivel axes 5 and 9. In the shown left end position the coupling link 15 results in the smallest Seat recline angle ⁇ at a given recline angle ⁇ , i.e. the ratio of the seat angle ⁇ Backrest inclination angle ⁇ , the so-called synchronous ratio, has the smallest possible value. It is in the illustrated Example approx. 0.4: 1.
- the coupling link 15 by means of the spindle 21 after shifted to the right until the bearing pin 15a the right or has reached the rear end of the slot 17 and from the Pivot axis 5 of the seat 7 the greatest possible distance B then the backrest support is inclined backwards 11 by the same angle ⁇ of the seat 7 through the Coupling link 15 by an angular amount ⁇ '(not shown) pulled down, which is significantly larger than the drawn angle ⁇ .
- ⁇ ' the ratio of the angle ⁇ 'to the angle ⁇ has a larger value.
- the synchronous ratio in the right end position of the coupling link 15 approx. 0.7: 1.
- the device for moving the articulated connection can also be used between seat 7 and backrest support 11 relative to whose pivot axes 5 and 9 mechanically in a different way than using guide slots and screw spindles his.
- the mechanical adjustment shown adjustment by means of an electric motor can also be considered to be pulled.
- a stepless adjustment a setting in a number of predetermined steps be provided.
- the change in the synchronous ratio also by moving the seat and / or backrest swivel axis 5, 9 can be brought about relative to the articulated coupling 15.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
Description
Claims (3)
- Stuhl mit Synchronmechanik, mit
einem Gestell (3),
einem Sitz (7), der am Gestell (3) um eine reelle oder gedachte horizontale Sitzschwenkachse (5) schwenkbar gelagert und aus seiner Normalstellung nach unten schwenkbar ist,
einem eine Rückenlehne (13) tragenden Rückenlehnenträger (11), der am Gestell (3) um eine reelle oder gedachte horizontale Lehnenschwenkachse (9) schwenkbar gelagert und aus seiner Normalstellung nach hinten schwenkbar ist,
und einem Lenker (15), der an seinen beiden Enden mittels Gelenken (15a, 15b) mit dem Sitz (7) bzw. dem Rückenlehnenträger (11) verbunden ist und deren Schwenkbewegungen miteinander koppelt,
wobei durch die Abstände der Gelenke (15a, 15b) von der Sitzschwenkachse (5) und Lehnenschwenkachse (9) das Verhältnis zwischen den Änderungen der Schwenkwinkel (α, β) von Sitz (7) und Rückenlehnenträger (11), d. h. der Synchronverlauf, festgelegt ist,
dadurch gekennzeichnet, daß die Gelenke (15a, 15b) des Lenkers (15) in Schlitzen (17, 19) des Sitzes (7) und des Rückenlehnenträgers (11) verschiebbar geführt sind, daß die Schlitze (17, 19) in Normalstellung von Sitz (7) und Rückenlehnenträger (11) etwa horizontal verlaufen, und daß der Lenker (15) längs der Schlitze (17, 19) durch eine Verstellmechanik (21) stufenweise oder kontinuierlich verstellbar und festlegbar ist. - Stuhl nach Anspruch 1, dadurch gekennzeichnet, daß die Verstellmechanik eine Schraubspindel (21) aufweist.
- Stuhl nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Verstellstrecke des Lenkers (15) relativ zum Sitz (7) und zum Rückenlehnenträger (11) so gewählt ist, daß das Synchronverhältnis, d. h. das Verhältnis einer Neigungswinkeländerung des Sitzes (7) zu der damit gekoppelten Neigungswinkeländerung des Rückenlehnenträgers (11) am einen Ende des Verstellbereiches weniger als 0,5:1, insbesondere ca. 0,4:1 oder weniger, und am anderen Ende des Verstellbereichs mehr als 0,5:1, insbesondere ca. 0,7:1 oder mehr beträgt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702328 | 1997-01-23 | ||
| DE19702328A DE19702328A1 (de) | 1997-01-23 | 1997-01-23 | Stuhl mit Synchronmechanik |
| PCT/EP1998/000342 WO1998032353A1 (de) | 1997-01-23 | 1998-01-22 | Stuhl mit synchronmechanik |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0900035A1 EP0900035A1 (de) | 1999-03-10 |
| EP0900035B1 true EP0900035B1 (de) | 2002-11-06 |
Family
ID=7818161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98903022A Expired - Lifetime EP0900035B1 (de) | 1997-01-23 | 1998-01-22 | Stuhl mit synchronmechanik |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5931531A (de) |
| EP (1) | EP0900035B1 (de) |
| DE (2) | DE19702328A1 (de) |
| WO (1) | WO1998032353A1 (de) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6139103A (en) * | 1997-03-12 | 2000-10-31 | Leggett & Platt, Inc. | Synchronized chair seat and backrest tilt control mechanism |
| IT245520Y1 (it) * | 1998-07-16 | 2002-03-22 | Beniamino Miotto | Dispositivo meccanico particolarmente per la movimentazione sincronadi sedile e schienale di una sedia. |
| US6709058B1 (en) | 1999-04-09 | 2004-03-23 | Humanscale Corp. | Ergonomic chair |
| IT1308074B1 (it) * | 1999-06-04 | 2001-11-29 | Pro Cord Srl | Sedia con sedile e schienale oscillanti in modo sincronizzato |
| DE19927691A1 (de) * | 1999-06-17 | 2000-12-28 | Koenig & Neurath Ag | Stuhl, insbesondere Bürostuhl |
| GB9917307D0 (en) * | 1999-07-23 | 1999-09-22 | Sec Dep Of The Home Department | Improvements in and relating to analysis of DNA |
| DE10026475A1 (de) * | 2000-05-27 | 2001-12-06 | Haworth Bueroeinrichtung Gmbh | Stuhl |
| AU783829B2 (en) | 2000-09-28 | 2005-12-08 | Formway Furniture Limited | A reclinable chair |
| AUPR054400A0 (en) | 2000-09-29 | 2000-10-26 | Formway Furniture Limited | A castor |
| US6588843B1 (en) * | 2000-10-06 | 2003-07-08 | Ghsp, Incorporated | Chair control |
| US6820934B2 (en) * | 2000-11-09 | 2004-11-23 | Michigan Tube Swagers & Fabricators, Inc. | Chair having flexible back support |
| US6471293B2 (en) | 2000-11-09 | 2002-10-29 | Michigan Tube Swagers & Fabricators, Inc. | Stackable chair with flexible back support |
| DE10122948C1 (de) * | 2001-05-11 | 2003-03-13 | Armin Sander | Stuhl, insbesondere Bürostuhl |
| DE10122946C1 (de) * | 2001-05-11 | 2003-01-30 | Armin Sander | Stuhl, insbesondere Bürostuhl |
| US6805412B2 (en) * | 2001-08-30 | 2004-10-19 | Burgess Furniture Ltd. | Stackable chair with flexible back |
| NZ518944A (en) | 2002-05-14 | 2004-09-24 | Formway Furniture Ltd | Height adjustable arm for chair with outer stem releasably lockable to inner stem by engagement of recesses |
| US6869142B2 (en) * | 2002-09-12 | 2005-03-22 | Steelcase Development Corporation | Seating unit having motion control |
| US7165811B2 (en) | 2002-09-12 | 2007-01-23 | Steelcase Development Corporation | Control mechanism for seating unit |
| US7048335B2 (en) * | 2003-06-05 | 2006-05-23 | Steelcase Development Corporation | Seating unit with crossbar seat support |
| AU2005244822B2 (en) | 2004-05-13 | 2012-03-15 | Humanscale Corporation | Mesh chair component |
| TWI260977B (en) * | 2005-02-05 | 2006-09-01 | Tung Yu O A Co Ltd | Chair seat with slipping function |
| US7478880B2 (en) * | 2005-03-08 | 2009-01-20 | L&P Property Management Company | Multi-purpose adjustment chair mechanism |
| USD623449S1 (en) | 2005-05-13 | 2010-09-14 | Humanscale Corporation | Mesh backrest for a chair |
| AR057387A1 (es) * | 2005-06-20 | 2007-12-05 | Humanscale Corp | Aparato de asiento con movimiento reclinable |
| EP2010025A4 (de) * | 2006-04-24 | 2010-11-17 | Humanscale Corp | Stuhl mit sich automatisch einstellbarem widerstand gegen kippen |
| USD660056S1 (en) | 2006-06-20 | 2012-05-22 | Humanscale Corporation | Chair |
| US7784870B2 (en) * | 2007-03-13 | 2010-08-31 | Hni Technologies, Inc. | Six bar mechanism and control for chair |
| US7347496B1 (en) * | 2007-06-18 | 2008-03-25 | Chih Chiang Wang | Adjustable chair backrest |
| WO2009134451A1 (en) | 2008-05-02 | 2009-11-05 | Haworth, Inc. | Tension mechanism for a weight-responsive chair |
| US20110304192A1 (en) * | 2010-06-15 | 2011-12-15 | Augustat Betty A | Ergometric Chair Apparatus |
| GB201014953D0 (en) * | 2010-09-08 | 2010-10-20 | Birkbeck Hilary R | Slide chair action |
| DE102011010099A1 (de) * | 2011-02-01 | 2012-08-02 | Bock 1 Gmbh & Co. Kg | Synchronmechanik |
| US20130175841A1 (en) * | 2012-01-11 | 2013-07-11 | James W. Finck | Reclining seat assembly |
| US9504326B1 (en) | 2012-04-10 | 2016-11-29 | Humanscale Corporation | Reclining chair |
| EP3126236B1 (de) * | 2014-04-02 | 2021-06-09 | B/E Aerospace, Inc. | Wiegerücklehnmechanismus für flugzeugsitz mit fester schale |
| CN106455821A (zh) | 2014-04-17 | 2017-02-22 | Hni技术公司 | 椅子和椅子控制组件、系统和方法 |
| JP6391089B2 (ja) * | 2014-07-28 | 2018-09-19 | コイト電工株式会社 | 座席装置 |
| AU2018344896B2 (en) * | 2017-10-05 | 2024-10-31 | Godrej & Boyce Mfg. Co. Ltd., | Posture adaptive work chair |
| US11021255B2 (en) * | 2018-01-30 | 2021-06-01 | Rockwell Collins, Inc. | Work-and-dine aircraft seat with tilt and shift articulation |
| US10820703B2 (en) * | 2018-09-17 | 2020-11-03 | Sedus Stoll Ag | Chair, particularly conference or office chair, and method for manufacturing a chair |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2272980A (en) * | 1939-02-11 | 1942-02-10 | Mclellan | Chair construction |
| US2859799A (en) * | 1956-05-03 | 1958-11-11 | Edwin R Moore | Functional posture controller for chairs |
| CH641658A5 (en) * | 1979-11-14 | 1984-03-15 | Drabert Soehne | Chair, in particular for operating visual display units |
| DE3460513D1 (en) * | 1983-01-21 | 1986-10-02 | Pierre Schmitz | Chair, in particular an office chair |
| DE8607194U1 (de) * | 1986-03-15 | 1986-04-30 | Drabert Söhne Minden (Westf.), 4950 Minden | Sitzmöbel |
| DE3700447A1 (de) * | 1987-01-09 | 1988-07-21 | Vogt Bueromoebel | Sitzmoebel |
| DE3834614A1 (de) * | 1988-10-11 | 1990-04-12 | Hartmut S Engel | Funktionssitzmoebel |
| DE3916474A1 (de) * | 1989-05-20 | 1990-11-22 | Roeder Soehne Sitzmoebelfab | Stuhl, insbesondere arbeits- oder buerostuhl |
| DE3930983C2 (de) * | 1989-09-16 | 1993-09-30 | Rolf Voelkle | Sitzmöbel mit neigungsverstellbarer Sitzfläche |
| IE66531B1 (en) * | 1991-05-21 | 1996-01-24 | Ashfield Eng Co Wexford Ltd | A chair tilting mechanism |
| DE4208648C1 (de) * | 1992-03-18 | 1993-05-27 | Roeder Gmbh Sitzmoebelwerke, 6000 Frankfurt, De | |
| AU668431B2 (en) * | 1992-12-01 | 1996-05-02 | Klasse Pty Ltd | Adjustment mechanism for a chair |
| DE4324541A1 (de) * | 1993-07-22 | 1995-01-26 | Trendoffice Bueromoebel | Stuhl, insbesondere Bürostuhl |
| US5826940A (en) * | 1995-11-27 | 1998-10-27 | Hodgdon; Dewey | Reactive multi-position chair |
-
1997
- 1997-01-23 DE DE19702328A patent/DE19702328A1/de not_active Withdrawn
-
1998
- 1998-01-22 WO PCT/EP1998/000342 patent/WO1998032353A1/de not_active Ceased
- 1998-01-22 DE DE59806164T patent/DE59806164D1/de not_active Expired - Fee Related
- 1998-01-22 EP EP98903022A patent/EP0900035B1/de not_active Expired - Lifetime
- 1998-09-21 US US09/157,878 patent/US5931531A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5931531A (en) | 1999-08-03 |
| EP0900035A1 (de) | 1999-03-10 |
| DE19702328A1 (de) | 1998-07-30 |
| DE59806164D1 (de) | 2002-12-12 |
| WO1998032353A1 (de) | 1998-07-30 |
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