WO2007000270A1 - Mecanisme de synchronisation - Google Patents

Mecanisme de synchronisation Download PDF

Info

Publication number
WO2007000270A1
WO2007000270A1 PCT/EP2006/005952 EP2006005952W WO2007000270A1 WO 2007000270 A1 WO2007000270 A1 WO 2007000270A1 EP 2006005952 W EP2006005952 W EP 2006005952W WO 2007000270 A1 WO2007000270 A1 WO 2007000270A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
seat
backrest
seat support
link
Prior art date
Application number
PCT/EP2006/005952
Other languages
German (de)
English (en)
Inventor
Hermann Bock
Original Assignee
Bock 1 Gmbh & 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 & Co. Kg filed Critical Bock 1 Gmbh & Co. Kg
Priority to EP06762117A priority Critical patent/EP1903912A1/fr
Priority to CN200680023085A priority patent/CN100594823C/zh
Publication of WO2007000270A1 publication Critical patent/WO2007000270A1/fr
Priority to US11/964,302 priority patent/US20080136239A1/en

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
    • A47C1/031—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
    • 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
    • A47C1/03272—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 a synchronous mechanism for a correlated seat-backrest movement of an office chair, with a placeable on a chair column base support, a seat support and a backrest support.
  • synchronous mechanism is understood to mean assemblies in the seat substructure of an office chair which provide kinematics which are coupled to one another and provide a specific relative movement of the seat and backrest
  • the backrest support which extends in a conventional manner from the actual synchronizing mechanism to the rear, carries on an upwardly extending arm, the backrest of the office chair.Seat carrier and backrest support are usually coupled so articulated that a pivoting movement of the backrest to the rear - like can be caused for example by a leaning of the chair user to the backrest - induced a lowering movement of the rear edge of the seat down.
  • German Offenlegungsschrift 2026 929 discloses a chair with automatically adapting backrest, in which the rear part of the seat panel raises when the user leans against the backrest and thus pivots it backwards. This is achieved in that a handle designed as a lever end of the backrest support is constantly applied to the underside of the seat plate. When lowering the seat plate, the backrest moves forward. If the user leans against the backrest, the rear part of the seat is raised.
  • An object of the present invention is to provide a synchronous mechanism in which a setting of a spring force for changing the "pivoting resistance" of the backrest is not required.
  • a synchronous mechanism according to claim 1.
  • the pivotable about a transverse axis backrest support is connected on the one hand via a first link to the base support and on the other hand via a second link to the seat support such that a pivoting movement of the back to the rear induces a lifting movement of the rear portion of the seat support.
  • the seat support is connected to the base support such that a lifting movement of the front portion of the seat support takes place.
  • a basic idea of the invention is that the user of the office chair "raises" himself by stressing the backrest itself, in other words, when the synchronous mechanism is operated by pushing the backrest back, the user works against his own weight resting on the seat.
  • the desired “swivel resistance” thus sets itself, as it were, automatically on the basis of the weight of the user. From the prior art known spring force settings with elaborate adjustment mechanisms (worm gears, gears, threaded rods, etc.) are not required. This considerably reduces the manufacturing costs of the synchronous mechanism. At the same time, the reliability increases.
  • the seat support is not only raised in its rear region, but at the same time also takes place a lifting of the front portion of the seat support, synchronous entrainment of the seat takes place in a defined relationship to the backrest to the rear top.
  • the required for the "self-adjusting" mechanics of the present invention lever geometry is achieved by the arrangement and design of the two links, wherein preferably the first link is provided with a pivot bearing for producing a pivotal connection with the base support, and wherein the handlebar end with the seat support and The relative movement of the seat support and backrest support to each other, the opposite bar end is hinged to the backrest support is thus defined by the position of the total four extending through the ends of the two links joint axes.
  • the displacement of the seat support to the base support is defined on the one hand by the linear guide in the front region of the seat support and on the other hand by the position and function of the pivot bearing on the first link.
  • first link and / or the second link are covered to the outside by a part of the backrest support and / or a part of the seat support.
  • Fig. 1 is a perspective view of a synchronous mechanism obliquely from behind
  • Fig. 2 is a side view of the synchronous mechanism in the
  • Fig. 3 is a side view of the synchronous mechanism in a pivoted backward position. All figures show the synchronous mechanism only schematically with the essential components of the invention.
  • the synchronous mechanism has a base support 1, which is set by means of a cone holder 2 on the upper end of a chair column (not shown), see Fig. 1.
  • the synchronous mechanism comprises a substantially frame-shaped seat support 3 and a fork-shaped in plan view backrest support 4, whose cheeks 5, 6 are arranged on both sides of the base support 1.
  • the seat support 3 is provided for receiving or mounting a preferably padded seat (not shown). The assembly is done using not shown fasteners in the usual way.
  • Backrest support 4 is attached to a backrest, not shown, which is height adjustable in modern office chairs.
  • the backrest can also be integrally connected to the backrest support 4.
  • FIG. 1 shows the basic position in which the backrest support 4 assumes a substantially vertical position.
  • FIG. 3 shows the synchronizing mechanism in a rearwardly pivoted position.
  • the backrest support 4 which is pivotable about a transverse axis in the pivoting direction S, is connected to the base support 1 via a first link 7.
  • the first link 7 is provided with a pivot bearing 8 for producing a pivotal connection with the base support 1.
  • the handlebar 7 is articulated by means of a bearing pin 9 on a side leg 11 of the base support 1 extending in the direction of the seat trailing edge 10.
  • the one free end 12 of the first link 7 is articulated via a hinge 13 with a side arm 14 of the seat support 3 extending in the direction of the seat trailing edge 10.
  • the opposite free end 15 of the handlebar 7 is pivotally connected via a hinge 16 with a extending in the direction of the seat leading edge 17 cheek 5, 6 of the backrest support 4.
  • the side arm 14 of the seat support 3 also runs parallel to the
  • first hinge axis 18 is seen in the chair longitudinal direction 19 behind the defined by the articulation of the upper end 12 of the arm 7 to the seat support 3 second hinge axis 20.
  • the angle ⁇ of the first link 7 to the horizontal in the normal position is about 5 °. Even in a maximum rearwardly pivoted position of the synchronous mechanism, this order of arrangement of the joint axes 18, 20 changes Not. In the rearwardly pivoted position, as shown in Fig. 3, the first link 7 also shows obliquely forward, but then it includes with the vertical an angle ß of about 12 °.
  • the first articulation axis 18 always extends below the second articulation axis 20 when viewed in the vertical direction.
  • the pivot bearing 8 is arranged outside the middle of the handlebar, namely slightly offset in the direction of the second hinge axis 20 out.
  • Pivot axis 21 extends parallel to the two hinge axes 18, 20. According to the course of the hinge axis 18, the two lower ends 15 of the two first link 7 of the synchronizing mechanism are connected to a holding axis 22 whose ends designed as a journal serve to form the joints 16. At the same time, a defined pivoting of the first link 7 is thereby secured and tilting of the link 7 is avoided.
  • the backrest support 4 is connected via a second link 25 to the seat support 3.
  • the first link 7 is slightly longer than the second link 25.
  • the length ratio between the (rear) first link 7 and the (front) second link 25 is about 1.07: 1.
  • the one free end 26 of the second link 25 is in turn via a joint 27 with the side arm 14 of the seat support 3 and the opposite free end 28 of the handlebar 25 via a joint 29 with the cheek 5, 6 of the backrest support 4 hingedly connected.
  • third hinge axis 30 is arranged in the chair longitudinal direction 19 behind the defined by the articulation of the upper end 26 of the handlebar 25 to the seat support 3 fourth hinge axis 31.
  • the vertical arrangement of the joint axes 30, 21 of the second link 25 corresponds to the principle according to the vertical arrangement of the joint axes 18, 20 in the first link 7.
  • the third hinge axis 30 thus extends in vertical
  • the vertical arrangement of the four hinge axes 18, 20, 30, 31 of the first and second links 7, 25 is as follows: the second and fourth hinge axes 20, 31 are substantially at a height in both the home position and the pivoted position ,
  • the pivot axis 21 of the first link 7 always runs between the height of the second or fourth hinge axes 20, 31 and the height of the first and third hinge axes 18, 30.
  • the first hinge axis 18 is in the basic position between the pivot axis 21 and the third hinge axis 30 and in the pivoted position below the fourth hinge axis 31st
  • Pivoting movement S of the backrest to the rear a lifting movement Hl of the rear portion 32 of the seat support 3, see.
  • a pivoting of the backrest to the rear bottom is in other words a displacement of the seat support 3 backwards and upwards, while the base support 1 with the pivot bearing 9 remains fixed in position.
  • Lever construction protects against contamination.
  • a simple additional cover for example in the form of an extension of the cheeks 5, 6 of the backrest support 4 Above, can be achieved beyond that even in the pivoted state penetration into the swing mechanism can be safely excluded.
  • a high degree of security in the handling of the office chair can be created.
  • the seat support 3 is connected to the base support 1 in such a way that a lifting movement H2 of the front area 37 of the seat support 3 takes place with a pivoting of the backrest support 4.
  • the seat support 3 is connected to the base support 1 in such a way that a lifting movement H2 of the front area 37 of the seat support 3 takes place with a pivoting of the backrest support 4.
  • Position of the seat support 3 in the pivoted position results. This avoids unwanted constrictions or pressure on the underside of the thighs during pivoting.
  • the pivoted position of the backrest support 4 is pivoted about a pivot angle ⁇ of about 24 ° to the base support 1, while the seat support 3 is raised almost parallel.
  • the rear portion 32 of the seat support 3 is raised relative to the front portion 37 of the seat support 3 by an angle ⁇ of about 2 °.
  • the base support 1 is connected to the seat support 3 via a linear guide in the manner of a slot-like link 38, which is arranged in the front region 37 of the seat support 3.
  • the base support 1 has two laterally arranged and in the direction of the seat leading edge 17 extending wings (not shown). These are connected to each other via a bearing axis.
  • the bearing axis is parallel to the hinge axes 18, 20, 30, 31, the pivot axis 21 and the support shaft 22 is arranged.
  • the two formed as a bearing pin 39 ends of the bearing axis are each from the inside in the gate 38, which serves as a linear sliding guide.
  • the gate 38 is formed in a side member 40 of the seat support 3, which extends in the direction of the seat leading edge 17.
  • the gate 38 extends obliquely from the front bottom to the rear top and closes with the horizontal in the pivoted position an angle ⁇ of about 42 ° (basic position about 40 °).
  • the ends 39 of the bearing axis abut the upper stop of the link 38.
  • the bearing axis is then located approximately at a height with the second and fourth hinge axis 20, 31.
  • Bearing axis in the direction of the opposite lower end of the link 38.
  • the bearing axis is then located approximately at a height with the pivot axis 21st
  • the synchronizing mechanism comprises a in the basic position substantially horizontally arranged in the seat support 3 spring element in the form of a tension spring 41, which is connected on the one hand with the bearing axis of the base support 1 and on the other hand with a further transverse holding axis 42 on the seat support 3.
  • the tension spring 41 is mounted with its front end to the bearing axis and with its rear end to the support shaft 42.
  • the tension spring is for

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)

Abstract

L'invention concerne un mécanisme de synchronisation pour le mouvement corrélatif du dossier et de l'assise d'un siège de bureau, ce mécanisme comportant un support de base (1) placé sur la colonne du siège, un support d'assise (3) et un support de dossier (4). L'invention vise à créer un mécanisme de synchronisation qui ne nécessite pas le réglage de la tension de ressort pour modifier la «résistance au pivotement» du dossier. A cet effet, le support de dossier (4) pivotant autour d'un axe transversal est relié d'une part au support de base (1) par une première bielle (7) et d'autre part au support d'assise (3) par une deuxième bielle (25), de sorte qu'un mouvement pivotant du dossier vers l'arrière induit un mouvement de soulèvement de la zone arrière (32) du support d'assise (3), et le support d'assise (3) est relié au support de base (1) de manière que la zone avant (37) du support d'assise (3) effectue simultanément un mouvement de soulèvement. La présente invention se base sur le concept selon lequel l'utilisateur du siège de bureau «se soulève» lui-même vers le haut par sollicitation du dossier.
PCT/EP2006/005952 2005-06-26 2006-06-21 Mecanisme de synchronisation WO2007000270A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06762117A EP1903912A1 (fr) 2005-06-26 2006-06-21 Mecanisme de synchronisation
CN200680023085A CN100594823C (zh) 2005-06-26 2006-06-21 同步机构
US11/964,302 US20080136239A1 (en) 2005-06-26 2007-12-26 Synchronizing mechanism for a chair

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005029906A DE102005029906B3 (de) 2005-06-26 2005-06-26 Synchronmechanik
DE102005029906.7 2005-06-26
DE202005010097U DE202005010097U1 (de) 2005-06-26 2005-06-26 Synchronmechanik

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/964,302 Continuation US20080136239A1 (en) 2005-06-26 2007-12-26 Synchronizing mechanism for a chair

Publications (1)

Publication Number Publication Date
WO2007000270A1 true WO2007000270A1 (fr) 2007-01-04

Family

ID=44123158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/005952 WO2007000270A1 (fr) 2005-06-26 2006-06-21 Mecanisme de synchronisation

Country Status (5)

Country Link
US (1) US20080136239A1 (fr)
EP (1) EP1903912A1 (fr)
CN (1) CN100594823C (fr)
DE (2) DE102005029906B3 (fr)
WO (1) WO2007000270A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8272693B2 (en) 2008-05-02 2012-09-25 Haworth, Inc. Tension mechanism for a weight-responsive chair
IT201800003431A1 (it) * 2018-03-12 2019-09-12 Donati Spa Dispositivo di oscillazione per una seduta di una sedia o una poltroncina

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016968B4 (de) * 2009-04-14 2012-01-26 Votteler Designpartner Gmbh Sitzmöbel
BR122015025310B1 (pt) 2011-10-04 2021-01-12 Formway Furniture Limited cadeira
CA2852691A1 (fr) * 2014-05-27 2015-11-27 Keilhauer Ltd. Mecanisme d'inclinaison a ressort lie a l'assiette du siege
CN106419239B (zh) * 2016-08-27 2023-12-26 永艺家具股份有限公司 座背联动椅阻尼机构的调节结构
IT201700031737A1 (it) * 2017-03-22 2018-09-22 Co Fe Mo Ind S R L Sistema di articolazione per sedie
WO2024013141A1 (fr) * 2022-07-11 2024-01-18 Vitra Ag Mécanisme de synchronisation pour chaise
CH719886A1 (de) * 2022-07-11 2024-01-31 Vitra Ag Synchronmechanik für stuhl.
CN115624254A (zh) * 2022-09-29 2023-01-20 恒林家居股份有限公司 一种椅子及其塑胶自载重底盘

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026929A1 (de) 1969-06-03 1970-12-17 Dupart, Jean, Sceaux (Frankreich) Stuhl mit sich automatisch anpassender Rückenlehne
WO2000074531A2 (fr) 1999-06-04 2000-12-14 Soft/View Computer Products Corp. Siege ergonomique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337267A (en) * 1966-01-27 1967-08-22 Royal Dev Co Positionable chair
US3869172A (en) * 1973-06-28 1975-03-04 Pontiac Furniture Ind Chair reclining mechanism
EP0628445B1 (fr) * 1993-05-19 1997-11-12 Cesa Compagnie Europeenne De Sieges Pour Automobiles Siège à positions multiples pour véhicules automobiles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026929A1 (de) 1969-06-03 1970-12-17 Dupart, Jean, Sceaux (Frankreich) Stuhl mit sich automatisch anpassender Rückenlehne
WO2000074531A2 (fr) 1999-06-04 2000-12-14 Soft/View Computer Products Corp. Siege ergonomique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8272693B2 (en) 2008-05-02 2012-09-25 Haworth, Inc. Tension mechanism for a weight-responsive chair
IT201800003431A1 (it) * 2018-03-12 2019-09-12 Donati Spa Dispositivo di oscillazione per una seduta di una sedia o una poltroncina

Also Published As

Publication number Publication date
EP1903912A1 (fr) 2008-04-02
CN101208029A (zh) 2008-06-25
CN100594823C (zh) 2010-03-24
DE102005029906B3 (de) 2007-01-11
US20080136239A1 (en) 2008-06-12
DE202005010097U1 (de) 2006-11-09

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