EP2670279B1 - Synchronmechanik - Google Patents

Synchronmechanik Download PDF

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Publication number
EP2670279B1
EP2670279B1 EP12703437.9A EP12703437A EP2670279B1 EP 2670279 B1 EP2670279 B1 EP 2670279B1 EP 12703437 A EP12703437 A EP 12703437A EP 2670279 B1 EP2670279 B1 EP 2670279B1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
seat
seat support
pivot
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.)
Active
Application number
EP12703437.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2670279A1 (de
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 EP2670279A1 publication Critical patent/EP2670279A1/de
Application granted granted Critical
Publication of EP2670279B1 publication Critical patent/EP2670279B1/de
Active 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

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 assemblies are understood in the seat base of an office chair, which provide for a coupled, a certain relative movement of the seat and backrest with each other bringing kinematics.
  • On the seat support of the usually provided with a padded seat seat of the office chair is mounted.
  • 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 support and backrest support are usually coupled so articulated that a pivoting movement of the backrest to the rear - as can be caused for example by leaning of the chair user to the backrest - induces a lowering movement of the rear edge of the seat down.
  • pivoting resistance of the backrest can be adjusted depending on the weight of the user.
  • synchronizing mechanisms usually have a more or less complex spring arrangement for preloading the synchronizing mechanism.
  • a synchronous mechanism for a correlated seat-backrest movement of an office chair having a base support placeable on a chair column, a seat support, and a seat back support, and wherein the seatback support at the rear end of the seat is pivotally connected to the seat support and pivoted to the base support forms and wherein the base support forms a pivotal connection with the front end of the seat support.
  • An object of the present invention is to provide a synchronous mechanism, which is structurally particularly simple and therefore inexpensive to produce and yet provides the ease of use of a conventional synchronizing mechanism.
  • the synchronous mechanism should require no or only a few or weak spring elements.
  • the seat support directly d. H. directly and without the use of a coupling element, such as a handlebar or the like, is pivotally connected to the rear end of the base support, wherein at the same time connected directly to the base support, namely pivotable about a transverse axis on the base support backrest support is pivotally connected to the seat support such that a Pivoting movement of the backrest to the rear induced a lifting movement of the front portion of the seat support.
  • a basic idea of the invention is that the user of the office chair lifts himself up by a load on the backrest. In other words, the user works while pressing the synchronous mechanism by pushing back the back against his own, resting on the seat weight.
  • the desired swivel resistance thus arises, as it were, automatically due to the weight of the user.
  • Known from the prior art spring arrangements for adjusting the Swinging resistance eg in the form of several parallel-connected compression or tension springs
  • complex adjustment mechanisms worm gears, gears, threaded rods, etc.
  • the required for the "self-adjusting" mechanics of the present invention lever geometry is achieved in that the pivot axis of the connection of the backrest support with the base support seen in the seat longitudinal direction behind the hinge axis of the connection of the backrest support is arranged with the seat support.
  • the front region of the seat support is raised during a pivoting of the backrest. This increases the distance between the front portion of the seat support and the base support, while the rear portion of the seat support remains firmly connected to the base support. There is thus a tilting of the seat to the rear about the pivot axis of the seat carrier base support connection in a defined relationship to the movement of the backrest. This gives the desired synchronizing effect, in which the angle of the seat support to the backrest support changes.
  • the user's weight directly affects the swing resistance felt by the user.
  • a light user must overcome a significantly lower swing resistance when pivoting than a heavy user.
  • the same "perceived" resistance arises when pivoting the backrest for each user.
  • Due to the arrangement of the pivot bearing and joints and their configuration, the synchronous movement of the seat support can be adjusted individually to the requirements imposed on the chair. Thus, for example, by a change in the distance between the Schenklagern or joints adjustable how strong the seat support tends to pivot during a backrest.
  • the present synchronous mechanism is characterized by the fact that it is particularly flat, so that a corresponding assembly requires very little space. At the same time, the mechanics are extremely simple.
  • the desired synchronous movement can be realized with the three known components backrest support, base support and seat support, which are interconnected by means of only three articulation points.
  • the synchronous mechanism has a base support 1, which is set by means of a cone seat 2 on the upper end of a chair column (not shown).
  • the synchronous mechanism comprises a substantially frame-shaped seat support 3 and a fork-shaped in plan view backrest support 4, the cheeks 5 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.
  • a backrest not shown, is attached, which is height adjustable in modern office chairs.
  • the backrest can also be integrally connected to the backrest support 4.
  • the entire synchronous mechanism is mirror-symmetrical with respect to the central longitudinal plane, as far as the actual kinematics is concerned. In that regard, in the following description is always present on both sides in pairs Design elements of the actual swing mechanism go out.
  • Fig. 1 the basic position is shown, in which the seat support 3 is arranged substantially horizontally.
  • Fig. 2 shows the synchronizing mechanism in a rearwardly pivoted position of the backrest support 4. The front portion of the seat support 3 is raised.
  • the rear region 25 of the seat support 3 is articulated directly on the base support, with the aid of a bearing pin 6 on a first pivot bearing 27 of the base support 1.
  • the seat support 3 can thus be pivoted about a transverse pivot axis 13.
  • first mounting leg 12 of the seat support 3 extend from the support plate 11 of the seat support 3 down toward the base support 1. Since the pivot bearing 27 is disposed at the rear end 9 of the base support 1, and seat support and / or seats are pivoted undisturbed, which protrude beyond the trailing edge of the base support 1, without the need for this special and expensive constructive measures.
  • the backrest support 4 is articulated directly to a second pivot bearing 28 of the base support 1 with a cheek 5 extending in the direction of the seat leading edge 8 with the aid of a bearing journal 6.
  • the backrest support 4 can thus move about a transverse pivot axis 15 from the home position to a pivoted-back position.
  • the second pivot bearing 28 is located in the seat longitudinal direction 14 seen approximately in the center of the base support 1, and immediately before the cone seat. 2
  • the backrest support 4 is also connected directly to the seat support 3 articulated, more precisely, with second mounting legs 19 of the seat support 3, which extend from the support plate 11 of the seat support 3 down towards the base support 1.
  • Backrest support 4 and seat support 3 are thus pivotable about a transverse hinge axis 22 and at the same time slidably connected to each other in the seat longitudinal direction 14.
  • a rotational movement is in other words by the joint 16 at the same time also a translational movement possible. This is necessary in order to prevent locking of the seat support 3, because the movement path of the backrest support 4 about the second pivot axis 15 deviates from the movement path of the seat support 3 about the first pivot axis 13.
  • the defined by the articulation of the backrest support 4 on the base support 1 second pivot axis 15 is seen in the seat longitudinal direction 14 behind the defined by the articulation of the backrest support 4 on the seat support 3 hinge axis 22 arranged so that a pivoting movement of the backrest in the pivoting direction 7 about the pivot axis 15th of the second pivot bearing 28 to the rear rotation of the seat support 3 about the pivot axis 13 of the first pivot bearing 27 and thus a lifting movement 23 exclusively of the front portion 26 of the seat support 3 induced.
  • the rear portion 25 of the seat support 3 is not raised.
  • a behind the pivot axis 13 lying part of the seat (not shown) is lowered.
  • the seat support 3 is taken in the pivoting direction 7 and raised due to the lever assembly formed by the cheek 5 of the backrest support 4 by a pivoting of the backrest to the rear bottom.
  • the positions of the articulation points 15, 22 of the backrest support 4 on the base support 1 on the one hand and on the seat support 3 on the other hand define a lever element according to the invention as an integral part of the front region of the cheek 5 of the backrest support 4.
  • the distances between the first pivot axis 13 and the second pivot axis 15 and between the second pivot axis 15 and the hinge axis 22 define the synchronous ratio of the mechanism, i.
  • the selected ratio determines the lever geometry of the mechanism and determines the manner in which the seat support 3 lifts and moves synchronously to the pivoted backrest.
  • the first pivot axis 13 and the hinge axis 22 are in the non-pivoted basic position essentially at a height, while the second pivot axis 15 is arranged only slightly higher.
  • the distance 17 is in the example only 2 mm. This results u.a. a very flat design.
  • the distance 31 from the first pivot axis 13 to the second pivot axis 15 is in a particularly advantageous embodiment 107 mm and the distance 32 from the first pivot axis 13 to the hinge axis 22 is 137 mm. Also in a maximum rearwardly pivoted position of the synchronous mechanism, the order of arrangement of the axes 13, 15, 22 does not change.
  • a comparatively large distance 31, 32 to the second pivot axis 15 or to the hinge axis 22 can be produced in a structurally particularly simple manner, which results in a particularly advantageous synchronous ratio has, in which a very wide pivoting of the backrest support 4 causes only a slight lifting of the front edge 8 of the seat support 3 to the rear.
  • an embodiment has been found in which the inclination 30 of the seat support 3 to the horizontal starting position is about 5.5 °, when the backrest support 4 has a pivoting 29 of about 25 ° backwards down.
  • the vertical distance 33 between the second pivot axis 15 and the hinge axis 22 in the in Fig. 2 illustrated example 11 mm.
  • the position of the axes 13, 15, 22 causes the total pivot point of the mechanism at the beginning of the pivoting movement of the backrest to almost coincide with the actual pivot point of the chair user. This results in a particularly comfortable movement and the occurrence of negative effects, such as the so-called shirt pull-out effect, can be avoided.
  • an approximately linear mechanical characteristic curve is achieved in which the swivel resistance is approximately constant over the entire movement sequence.
  • the seat support 3 only in the front region 26th lifted, which supports the intuitive human motion sequence when pivoting backwards.
  • the pivot mechanism ensures that the backrest support 4 with the backrest about a pivot axis, here the second pivot axis 15, can be pivoted in the pivoting direction 7.
  • the pivoting movement of the backrest to the rear induces a lifting movement 23 of the front portion 26 of the seat support 3.
  • the seat support 3 executes exclusively a pivoting movement about the first pivot axis 13, while the base support 1 with its two pivot bearings 27, 28 remains fixed in position.
  • a spring assembly with one or more spring elements is a spring 21 arranged in the region of the front base support 18, which is supported on the one hand on the base support 1 and on the other hand on the cheek 5 of the backrest support 4, and which is loaded when the backrest support 4 is pivoted.
  • the spring element 21 need only be made comparatively weak, so that in total act on the components of the mechanism only small spring forces, resulting in a comparison with conventional mechanics significantly reduced stress on the components.

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)
EP12703437.9A 2011-02-01 2012-01-20 Synchronmechanik Active EP2670279B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011010099A DE102011010099A1 (de) 2011-02-01 2011-02-01 Synchronmechanik
PCT/EP2012/000247 WO2012104024A1 (de) 2011-02-01 2012-01-20 Synchronmechanik

Publications (2)

Publication Number Publication Date
EP2670279A1 EP2670279A1 (de) 2013-12-11
EP2670279B1 true EP2670279B1 (de) 2016-05-18

Family

ID=45581809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12703437.9A Active EP2670279B1 (de) 2011-02-01 2012-01-20 Synchronmechanik

Country Status (5)

Country Link
US (1) US20130320732A1 (zh)
EP (1) EP2670279B1 (zh)
CN (1) CN103338681B (zh)
DE (1) DE102011010099A1 (zh)
WO (1) WO2012104024A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11350750B2 (en) 2018-04-17 2022-06-07 L&P Property Management Company Tilt mechanism for a chair and chair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101398686B1 (ko) * 2013-10-10 2014-05-27 주식회사 시디즈 틸팅 타입 의자
NL2022680B1 (en) 2019-03-06 2020-09-17 Marel Poultry B V A poultry transfer mechanism
DE102019113582B4 (de) * 2019-05-21 2022-06-15 Bock 1 Gmbh & Co. Kg Synchronmechanik

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
DE3537203A1 (de) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Arbeitsstuhl mit neigungsmechanik von sitzschale und rueckenlehne
EP0179185B1 (de) * 1984-10-24 1990-06-13 Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. Stuhl, insbesondere Bürostuhl
DK167334B1 (da) * 1990-01-10 1993-10-18 Space International Aps Konvertibel stol
DE69414878T2 (de) * 1993-11-01 1999-06-24 Labofa A/S, Skalskoer Bürostuhl mit synchroner verstellung von sitz und rückenlehne
DE19639741C2 (de) * 1996-09-06 1998-07-09 Thomas Jungjohann Sitzmöbelelement, insbesondere Polstermöbelelement, mit einer gekoppelten Rückenlehnen- und Sitzverstellung
DE19702328A1 (de) * 1997-01-23 1998-07-30 Comforto Gmbh Stuhl mit Synchronmechanik
DE20116683U1 (de) * 2001-10-13 2002-01-24 Völkle, Rolf, 72290 Loßburg Sitzmöbel, insbesondere Bürodrehstuhl
DE102005020237B3 (de) * 2005-04-28 2006-08-17 Bock 1 Gmbh & Co. Kg Synchronmechanik
ES2288115B1 (es) * 2006-05-03 2008-09-16 Figueras International Seating S.A. Sistema de desplazamiento de conjuntos de butacas.
DE202007006762U1 (de) * 2006-10-13 2008-02-14 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
DE102007040175B3 (de) * 2007-05-07 2008-06-05 Bock 1 Gmbh & Co. Kg Synchronmechanik für Bürostühle
CN201123561Y (zh) * 2007-09-06 2008-10-01 陈登慧 椅子结构
KR101014456B1 (ko) * 2008-07-31 2011-02-14 기아자동차주식회사 자동차용 시트쿠션 틸팅장치
WO2010028412A1 (de) * 2008-09-15 2010-03-18 Bene Ag Vorrichtung zur verstellung des schwenkwiderstandes einer rückenlehne
CN201370309Y (zh) * 2009-01-19 2009-12-30 翁永联 一种方便倾仰调节的转椅底盘
DE102009009287A1 (de) * 2009-02-17 2010-09-09 Uhlenbrock, Christel Sitzmöbel, insbesondere Bürodrehstuhl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11350750B2 (en) 2018-04-17 2022-06-07 L&P Property Management Company Tilt mechanism for a chair and chair

Also Published As

Publication number Publication date
CN103338681A (zh) 2013-10-02
CN103338681B (zh) 2016-02-24
WO2012104024A1 (de) 2012-08-09
EP2670279A1 (de) 2013-12-11
US20130320732A1 (en) 2013-12-05
DE102011010099A1 (de) 2012-08-02

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