EP2250940A2 - Mécanisme synchrone - Google Patents

Mécanisme synchrone Download PDF

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Publication number
EP2250940A2
EP2250940A2 EP10004923A EP10004923A EP2250940A2 EP 2250940 A2 EP2250940 A2 EP 2250940A2 EP 10004923 A EP10004923 A EP 10004923A EP 10004923 A EP10004923 A EP 10004923A EP 2250940 A2 EP2250940 A2 EP 2250940A2
Authority
EP
European Patent Office
Prior art keywords
support
seat
backrest
seat support
driver
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.)
Withdrawn
Application number
EP10004923A
Other languages
German (de)
English (en)
Other versions
EP2250940A3 (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 EP2250940A2 publication Critical patent/EP2250940A2/fr
Publication of EP2250940A3 publication Critical patent/EP2250940A3/fr
Withdrawn legal-status Critical Current

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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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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 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. This is to prevent the so-called "shirt pull-out effect" and increase the seating comfort.
  • Such synchronous mechanisms are often constructed very expensive and therefore expensive to manufacture.
  • asynchronous mechanisms are known. These are understood to mean assemblies in which a pivoting of the backrest causes no movement of the seat support. In other words, moves at one Swiveling back only the backrest. The seating comfort is greatly reduced in comparison to synchronous mechanisms. In particular, occurs in asynchronous mechanics due to a "divergence" of the movements of the backrest and seat of the so-called “shirt extraction effect” on.
  • asynchronous mechanics due to a "divergence" of the movements of the backrest and seat of the so-called “shirt extraction effect” on.
  • such assemblies are significantly cheaper to manufacture than the synchronizing mechanisms described above.
  • An object of the present invention is to provide a mechanism for an office chair by which a high seating comfort can be achieved inexpensively.
  • the backrest support is connected about a transverse axis pivotally connected to the base support and in operative connection with the seat support carrier has such that the seat support during a pivoting movement of the backrest to the rear also performs a movement to the rear.
  • a basic idea of the invention is thus to take up the concept of a synchronous mechanism, a certain relative movement of the seat and backrest to each other, and to make such that without a complex construction, a comparable seating comfort is possible.
  • the descendants of the seat in the direction of the backrest required to avoid the "shirt pull-out effect” is inventively achieved in that the seat support by a driver arranged on the backrest support pulled back.
  • the defined by the position of the transverse axis pivot point of the backrest is tuned to the direction of pull of the seat to the rear and the length of the pulling movement.
  • the body of the user thus follows in a pivoting movement to the rear in a defined manner of the backrest.
  • the proposed synchronous mechanism is almost as simple as an asynchronous mechanism, whereby a particularly inexpensive production is possible.
  • Particularly advantageous is an embodiment of the invention in which the driver engages directly or directly on the seat support.
  • the driver requires the control of the seat support no complicated structures, such as lever mechanisms, etc., are linked together by the seat and base support and backrest support using different pivot points and various curved paths. Instead, a simple catch on the backrest support is sufficient to achieve the desired movement of the seat support.
  • the illustrated synchronizing 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, the cheeks 5 are arranged on both sides of the base support 1.
  • the seat support 3 is provided for receiving or mounting a padded seat. 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 a central longitudinal plane, which relates to the actual kinematics.
  • in the following description is always based on both sides in pairs existing construction elements of the actual pivot mechanism.
  • Fig. 1 the basic position is shown, in which the backrest support 4 occupies a substantially vertical position.
  • Fig. 2 shows the synchronizing mechanism in a rearwardly pivoted position.
  • the pivotable in the pivoting direction 6 backrest support 4 is connected via a transverse to the chair longitudinal direction 7 pivot axis 8 with the base support 1.
  • the pivot axis 8, which defines the position of the pivot point of the backrest, is provided in the chair longitudinal direction 7 behind the cone seat 2 in the lower region of the base support 1.
  • a driver 9 in the form of a ball head on the backrest support 4 is arranged.
  • the driver 9 is located in the in Fig. 1 shown basic position almost above the pivot axis 8.
  • the driver 9 can be compared to the vertical in chair longitudinal direction 7 slightly inclined backwards.
  • the driver 9 is located in a provided on the bottom 11 of the seat support 3, the shape of the driver 9 adapted, here cup or bell-shaped receiving opening 12, so that driver 9 and receiving opening 12 form a kind of ball joint.
  • the seat support 3 In a pivoting movement of the backrest in the pivoting direction 6 to the rear performs the seat support 3 exclusively horizontal movement in the direction 13 to the rear.
  • the seat support 3 and thus the fixed to the seat support 3 connected seat 14 is taken from the driver 9 to the rear, as in Fig. 2 is shown.
  • the seat support 3 is for this purpose connected to the base support 1 via a linear guide, which is not shown in detail.
  • a seat depth adjustment is provided.
  • the seat support 3 can be moved in the chair longitudinal direction 7 forward or backward and locked in the desired position.
  • the preferably manually operated by the user of the office chair seat depth adjustment can be realized on the one hand that the position of the receiving opening 12 by means of an adjusting device (not shown) in the chair longitudinal direction 7 is changeable.
  • a plurality of arranged in chair longitudinal direction 7 receiving openings 12 may be provided. Then it is adjustable by means of an adjusting device, in which the receiving openings 12 of the driver 9 rests.
  • the position of the cup-shaped or bell-shaped receiving opening 12 on the underside 11 of the seat support 3 can be varied by the receiving opening 12 is arranged in a receiving element 15, which on its the seat support 3 facing top 16 a latching and / or clamping mechanism (not shown), with the help of which the receiving element 15 at different arranged in the chair longitudinal direction 7 digits the bottom 11 of the seat support 3 can be attached.
  • the seat support 3 may be equipped for this purpose, for example with a mounting rail provided with latching and / or clamping elements (not shown) for the receiving element 15.
  • the driver 9 is not formed as a ball head, but as a pin. Accordingly, a receiving opening 12 in the form of a provided on the underside 11 of the seat support 3 tube is used. Also in this case, a seat depth adjustment can be carried out, wherein preferably one of the two variants already described above is used.
  • FIG. 3 an embodiment is shown with pin-shaped carrier 9, in which a plurality of tubular receiving openings 12 are arranged in the chair longitudinal direction 7.
  • a total of four receiving openings 12 are formed by two strips 17 which are provided with four semicircular recesses 18, wherein the strips 17 in the closed state abut each other such that the recesses 18 form four circular receiving tubes 12.
  • the pin-shaped carrier 9 is located in the chair longitudinal direction 7 foremost receiving opening 12 a.
  • an adjusting device not shown, which are operable, for example, via a laterally arranged on the seat support 3 operating knob, the strips 17 are moved away from each other for changing the seat depth adjustment in the opening direction 19. This creates between the strips 17 a groove in which the pin-shaped carrier 9 can be moved in the chair 7 longitudinal direction.
  • the driver 9 engages in a different receiving opening 12 and is locked in this again.
  • the operative connection between the carrier 9 and the seat carrier 3 can also be produced in other ways, but the carrier 9 and the seat carrier 3 are preferably in direct contact with each other. In other words, there is preferably a direct, direct control of the seat support 3 by the driver 9, without the need for more complicated indirect constructions, such as levers and so on.
  • the driver 9 is characterized by the fact that he performs the pivotal movement of the backrest support 4 directly with.
  • the driver 9 is preferably designed as a rigidly connected to the backrest support 4 component, so that his from the backrest support 4 directed away and in the receiving opening 12 free-floating performs the same curved path, as the backrest support 4 itself. This is preferably not only then if only an indirect connection between the driver 9 and the seat carrier 3 is present, but in particular when driver 9 and seat support 3 are directly in communication.
  • the seat support 3 performs an exclusively horizontal movement. In other words, the inclination of the seat support 3 and thus of the seat 14 remains unchanged.
  • a synchronous linear entrainment of the seat 14 to the rear takes place in a defined, not necessarily constant relationship to the backrest, but no lifting or lowering of the front or rear part of the seat support.
  • the seat support 3 performs during a pivotal movement of the backrest to the rear a non-horizontal or not exclusively horizontal movement to the rear.
  • the seat support 3 is connected to the base support 1 via an at least partially non-linear guide.
  • an oblique or arcuate guideway is provided on the top 21 of the base support 1, on which the drawn from the driver 9 seat support 3 back down or, depending on the shape of the Train, moved backwards up.
  • the guideway can have a continuous curvature.
  • the track may, for example, be divided into two and seen in the chair longitudinal direction 7 rear curved track element and seen in chair longitudinal direction 7 front linear track element, so that a non-horizontal movement of the seat support can be done.
  • the seat 14 or the seat support 3 used is divided into two, in particular such that a rear seat seen in the chair longitudinal direction 7 is pivotally connected to a front seat element seen in chair longitudinal direction 7.
  • the guide track can be configured, for example, such that during a pivoting movement of the backrest to the rear, the rear seat element on a curved curved path moves backwards down performs while the front seat element performs only a horizontal displacement to the rear.

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)
EP10004923A 2009-05-13 2010-05-10 Mécanisme synchrone Withdrawn EP2250940A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009021193A DE102009021193A1 (de) 2009-05-13 2009-05-13 Synchronmechanik
DE202009006922U DE202009006922U1 (de) 2009-05-13 2009-05-13 Synchronmechanik

Publications (2)

Publication Number Publication Date
EP2250940A2 true EP2250940A2 (fr) 2010-11-17
EP2250940A3 EP2250940A3 (fr) 2011-07-20

Family

ID=44080407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004923A Withdrawn EP2250940A3 (fr) 2009-05-13 2010-05-10 Mécanisme synchrone

Country Status (3)

Country Link
US (1) US8550557B2 (fr)
EP (1) EP2250940A3 (fr)
DE (2) DE102009021193A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8251448B2 (en) * 2007-03-13 2012-08-28 Hni Technologies Inc. Dynamic chair back lumbar support system
US9284729B2 (en) 2010-05-05 2016-03-15 Allsteel Inc. Modular wall system
WO2014144143A1 (fr) 2013-03-15 2014-09-18 Hni Technologies Inc. Chaise ayant une flexion arrière activée
WO2015160693A1 (fr) 2014-04-17 2015-10-22 Hni Technologies Inc. Support lombaire souple
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
USD743180S1 (en) 2014-10-15 2015-11-17 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
US10383448B1 (en) 2018-03-28 2019-08-20 Haworth, Inc. Forward tilt assembly for chair seat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208648C1 (fr) * 1992-03-18 1993-05-27 Roeder Gmbh Sitzmoebelwerke, 6000 Frankfurt, De
EP0934716A2 (fr) * 1998-02-04 1999-08-11 Unit Press Limited Mécanisme pour chaise

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402602B (de) * 1995-02-28 1997-07-25 Eckhard Hansen Dipl Ing Stuhl stuhl
US5826940A (en) * 1995-11-27 1998-10-27 Hodgdon; Dewey Reactive multi-position chair
AT405124B (de) 1997-04-14 1999-05-25 Eckhard Hansen Dipl Ing Stuhl
DE19810768B4 (de) 1998-03-06 2009-09-24 Drabert Gmbh Bürostuhl
US6709058B1 (en) * 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
JP4500388B2 (ja) * 1999-11-09 2010-07-14 株式会社岡村製作所 椅子の座席と背凭れの傾動装置
DE10125994A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Synchronmechanik für eine korrelierte Sitz-Rückenlehnen-Bewegung eines Bürostuhles
ITMI20022194A1 (it) * 2002-10-16 2004-04-17 Icf Spa Sedia avente sedile e schienale mobili.
US7478880B2 (en) * 2005-03-08 2009-01-20 L&P Property Management Company Multi-purpose adjustment chair mechanism
DE102006047889B4 (de) * 2006-10-10 2008-10-23 Interstuhl Büromöbel GmbH & Co. KG Sitzmöbel, insbesondere Bürostuhl
DE202007001395U1 (de) * 2007-01-31 2008-06-05 Sander, Armin Stuhl, insbesondere Bürostuhl

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208648C1 (fr) * 1992-03-18 1993-05-27 Roeder Gmbh Sitzmoebelwerke, 6000 Frankfurt, De
EP0934716A2 (fr) * 1998-02-04 1999-08-11 Unit Press Limited Mécanisme pour chaise

Also Published As

Publication number Publication date
DE102009021193A1 (de) 2010-11-25
DE202009006922U1 (de) 2010-09-23
EP2250940A3 (fr) 2011-07-20
US8550557B2 (en) 2013-10-08
US20100295351A1 (en) 2010-11-25

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