EP1258212B1 - Chaise, notamment chaise de bureau, avec dossier ayant une précharge réglable - Google Patents

Chaise, notamment chaise de bureau, avec dossier ayant une précharge réglable Download PDF

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Publication number
EP1258212B1
EP1258212B1 EP02010018A EP02010018A EP1258212B1 EP 1258212 B1 EP1258212 B1 EP 1258212B1 EP 02010018 A EP02010018 A EP 02010018A EP 02010018 A EP02010018 A EP 02010018A EP 1258212 B1 EP1258212 B1 EP 1258212B1
Authority
EP
European Patent Office
Prior art keywords
spring
chair
backrest
lever
base
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
Application number
EP02010018A
Other languages
German (de)
English (en)
Other versions
EP1258212A2 (fr
EP1258212A3 (fr
Inventor
Johannes Uhlenbrock
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.)
Interstuhl Bueromoebel GmbH and Co KG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1258212A2 publication Critical patent/EP1258212A2/fr
Publication of EP1258212A3 publication Critical patent/EP1258212A3/fr
Application granted granted Critical
Publication of EP1258212B1 publication Critical patent/EP1258212B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C1/03294—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
    • A47C1/03261—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
    • 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
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity

Definitions

  • the present invention relates to a chair, in particular Office chair, with one of a central chair pillar or more chair legs worn seat carrier, with a from the seat support worn seat plate and with a from one under the seat plate to the rear Backrest worn backrest, with the backrest support on the seat support around a horizontal, in chair transverse direction extending axis pivotally mounted and by means of at least one spring with an adjustable Force is applied to the backrest in the direction biased to the back of a chair user, the Spring is a compression or tension spring in an attack point at a distance from the axis of the backrest support attacks, wherein the attacking on the backrest end of the Spring is held on a sliding spring holder, on a spring-longitudinally extending spring guide track is guided, and where the distance between the point of attack and the axis by a chair user operable actuator is changeable.
  • a chair of the type mentioned is known from DE 43 24 542 A1 known.
  • the spring is a Screw compression spring extending over a pivoting abutment supported against the front part of the seat support. At its other end, the compression spring is supported against the sliding spring holder.
  • This penholder is on a guide rod in rod longitudinal direction slidably; the rod is in turn inside the Coil spring arranged.
  • the pen is here with his facing away from the spring end face on a contact surface of the backrest carrier, whereby the backrest support with the biasing force is applied.
  • the guide rod runs through the contact surface of the backrest carrier through and stands at its free end with the Actuator in connection.
  • the actuator is here Screw.
  • the set screw is stored in the seat carrier and has a lying below the seat support Turn handle on.
  • the knob which is in its interior contains an adjusting nut is the adjusting screw in a direction perpendicular to the guide bar adjustable, whereby the distance of the point of application of Spring on the backrest support of the pivot axis can be changed. This can be done accordingly torque acting on the backrest carrier by the user of the Chair are set.
  • the task, to create a chair of the kind mentioned above avoids the disadvantages presented and in which the setting the seat back biasing force by the Users of the chair can be done quickly, easily and easily can, at the same time the chair without loss of reliability structurally simpler and cheaper to produce should be.
  • the adjustment is advantageous the backrest biasing force for the user simplified, because with unloaded backrest the Spring holder by the spring to the end of its spring guide track is pushed, thereby forming a stop and in this position the actuator is relieved.
  • the so relieved actuator is with little effort adjustable by the user of the chair and in the desired Position brought by the user of the Chair corresponds to desired backrest preload force.
  • a mechanical translation like one Adjusting screw or a threaded spindle is, is here due to the ease of movement of the actuator in Relieved condition no longer needed. This is contributing improved ease of use and simplification the construction and thus to a cheaper Manufacturability of the chair at.
  • the actuator is a drag lever loaded on train, one end of which is pivotally connected to the spring holder is and its other end in the distance from the axis variable engagement with the backrest support stands.
  • the execution of the actuator as an on Train loaded drag lever allows a relatively light Execution of the actuator, for example in the form of a punched sheet metal part, since such a component at a given Sizing significantly higher tensile forces than Can absorb shear forces.
  • the engagement of the finger lever with the backrest support provided by a drag lever Driving pin, which in an adjustable position in a slot in the backrest carrier is formed, wherein the ends of the slot different from the axis, around which the backrest support is pivotable away lie.
  • the combination of driving pin and slot is structurally simple and reliably fulfills the intended Tasks, due to the simple construction the items whose production cost is possible. Also the assembly of the chair during its manufacture is beneficial easy.
  • the slot is arcuate on a radius around the pivot axis of the finger lever.
  • the invention proposes that the backrest support one beyond its pivot axis, one Lever arm forming extension and that the Point of application of the spring in the extension is.
  • the drag lever is expedient from a in the longitudinal direction of the spring facing center position over one extending to both sides of it Angle range adjustable.
  • the adjustment the backrest biasing force as possible convenient and easy to do is preferably the Drag lever with an operating lever for modification and determination of the pivoting position of the finger lever provided relative to the backrest support.
  • the drag lever and its operating lever to a two-armed Lever forming component are summarized, the Swivel bearing with a manually overridden, one automatic lever adjustment excluding frictional force is executed. This way is without any special further action ensures that one by the user the chair set backrest preload force remains until he makes a new setting.
  • the spring one in the chair longitudinal direction is extending compression spring whose front end in one fixed spring holder near the front edge of the seat plate at Seat support is supported and whose rear end with the the backrest is engaged spring end.
  • FIG. 1 of the drawing shows a chair 1 in one schematic side view, the chair 1 here as Office chair is running.
  • the supporting part of the chair 1 forms a seat support 2, which has a conventional cone block 23 is connected to a central chair column 21.
  • a base with Roll At the bottom of the chair column 21, not shown here is usually a base with Roll.
  • the seat support 2 extends from the upper end of Chair column 21 slightly rising to the front, i. in the Drawing figure to the left and is at its front end hingedly connected to a seat plate support 22.
  • On the top plate support 22 carries a seat plate 20, which is the seat for a user of the Chair 1 forms and the means of the hinged seat plate support 22 is pivotable.
  • Near her rear end the seat plate is supported by means of a hinge connection 32.
  • the hinge joint 32 is with its other End hinged to a backrest support 3, the seat carrier 2 below the seat panel 2 to the rear, i. in the Drawing to the right, runs.
  • a backrest 30 is attached, the supports the back of a chair user.
  • the backrest support 3 is by means of a pivot axis 33rd pivotally connected to the seat support 2 and at this stored, wherein the pivot axis 33 in the horizontal direction runs across the chair 1.
  • the backrest support 3 has an axis 33 beyond Extension 34, relative to the rest of the backrest support 3 is angled downwards. At this extension 34 engages the one end 41 of a compression spring. 4 on, with its other end 42 near the leading edge the seat plate 20 is supported on the seat support 2. Either the first end 41 and the second end 42 of Spring 4 is in each case in a spring holder 44, 45th held.
  • the front spring holder 45 is fixed to the Seat support 2 connected while the rear spring holder 44 relative to the seat support 2 in a provided therein Spring guide track 24 in the longitudinal direction of the spring 4 slidably is guided.
  • the spring 4 exercises on the extension 34 of the backrest support 3 from a force for that ensures that the backrest 30 with a toward the Back of the chair user pointing bias force is charged.
  • an actuator 5 in Form provided a pivotable rocker arm.
  • the one end of the finger lever 5 is about a pivot axis 55 pivotable on the sliding, rear spring holder 44 articulated; the other end of the finger lever 5 is with a driver pin 53 provided in a slot 35th in the extension 34 of the backrest carrier 3 engages.
  • the Slot 35 runs on a radius around the Swivel axis 55 of the finger lever 5.
  • the center of the Mitauerzapfens 53 forms the point 43, in which the spring 4 and the force exerted by this force on the backrest support 3, here its extension 34 attacks.
  • this is integral with an actuating lever 50 executed, extending from the pivot axis 55 to the rear, i. in the drawing to the right, extends.
  • the pivot bearing in the area of the pivot axis 55 is expedient with such a friction force executed that the drag lever 5 by pressing the Operating lever 50 is manually adjustable, but one undesirable automatic adjustment is excluded.
  • the chair 1 As is known, a synchronous mechanism. This means that the Seat plate 20 and the backrest 30 synchronously be pivoted, with the arrangement of the various Swivel axes and levers the coupling is done so that at a lowering of the rear part of Seat plate 20, the backrest 30 by a pivot angle the seat plate excess swivel angle is pivoted back and down.
  • Figure 2 of the drawing shows a somewhat enlarged view a detail of the chair 1 according to FIG. 1 in the region of the displaceable spring holder 44, which in the associated spring guideway 24 in the seat support 2 in Longitudinal direction of the spring 4 is guided displaceably.
  • Figure 2 Backrest 30 which is not visible in Figure 2, is located the spring holder 44 at the rear, i. in Figure 2 right End of the spring guide track 24 at.
  • Figure 3 shows the same representation as the figure 2 also a section of the chair 1 according to FIG 1, now with an offset towards the viewer Cutting plane.
  • the spring 4 is not cut but in side view visible, noticeable.
  • the right end of the spring 41 rests on the rear, displaceable spring holder 44, the in his here largely hidden spring track 24th is guided.
  • the drag lever 5 is also in here its maximum counterclockwise pivoted Position dashed lines, so that here, too Engagement point 43 of the spring 4 its maximum distance from the axis 33 has.
  • Figure 4 of the drawing shows in contrast to the figures 1 to 3 now the chair 1 in a loaded condition, in which the seat plate 20 in the rear area after down and the backrest 30 pivoted back and down is.
  • the coupling of the pivoting movements of Seat plate 20 and backrest 30 causes in a known Way the joint 32 between the bottom of Seat plate 20 and the backrest support 3.
  • FIGS. 4 and 5 illustrates, retains the spring 4 regardless of the Verschwenkungswolf of the rocker arm 5 their position and their course, so that except a change in the distance r between Point 43 and axis 33 no influence on the spring 4 takes place.
  • Figures 4 and 5 illustrate that the Slot 35 in the extension 34 of the backrest support. 3 approximately in the radial direction to the axis 33, so that although the slot 35 has an arcuate shape, one approximately linear adjustment of the distance r during pivoting of the toggle lever 5 results. This is a good one Adjustability of the backrest biasing force ensured by a user of the chair 1.
  • a spring 4 As can be seen from the drawing figures is here used as a spring 4, a coil spring; alternative for this purpose, the use of a gas spring is possible, this then additionally the feature of adjustability may have their length, which then creates a adjustable basic position of the seat plate 20 and the backrest 30 is enabled.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)

Claims (11)

  1. Chaise (1), notamment chaise de bureau, comprenant un support de siège (2) porté par une colonne centrale de chaise (21) ou plusieurs pieds de chaise, un plateau de siège (20) porté par le support de siège et un dossier (30) porté par un support de dossier (3) situé en dessous du plateau de siège (20) et allant vers l'arrière, le support de dossier (3) étant monté pivotant sur le support de siège (2) autour d'un axe (33) horizontal orienté dans le sens transversal de la chaise et subissant, au moyen d'au moins un ressort (4), une force réglable qui exerce sur le dossier (30) une précharge en direction du dos d'un utilisateur de la chaise, le ressort (4) étant un ressort à pression ou de traction qui attaque en un point d'attaque (43) à une distance (r) de l'axe (33) sur le support de dossier (3), l'extrémité (41) du ressort (4) attaquant au niveau du support de dossier (3) étant fixée sur un porte-ressort (44) déplaçable qui est guidé sur une glissière de ressort (24) orientée dans le sens longitudinal du ressort et la distance (r) entre le point d'attaque (43) et l'axe (33) étant modifiable par un organe de réglage (5) actionnable par l'utilisateur de la chaise,
    caractérisée en ce que
    la glissière de guidage (24) guidant le porte-ressort (44) est située sur le support de siège (2) dans une position fixe et avec une orientation fixe et en ce que l'organe de réglage (5) est constitué par un levier pivotant, le levier constituant l'organe de réglage (5) étant, d'une part, relié au porte-ressort (44) au moyen d'une articulation pivotante (55) et étant déplaçable conjointement avec celui-ci le long de la glissière de guidage (24) et se trouvant, d'autre part, en prise, variable sur sa distance (r) par rapport à l'axe (33) et réglable par pivotement du levier, avec le support de dossier (3).
  2. Chaise selon la revendication 1, caractérisée en ce que l'organe de réglage (5) est un levier d'entraínement (5) subissant une charge à la traction, dont une extrémité est assemblée à pivotement avec le porte-ressort (44) et dont l'autre extrémité se trouve en prise, variable sur sa distance (r) de l'axe (33), avec le support de dossier (3).
  3. Chaise selon la revendication 2, caractérisée en ce que le levier d'entraínement (5) vient en prise avec le support de dossier (3) du fait d'un tenon d'entraínement (53) prévu sur le levier d'entraínement (5) et qui se trouve dans une position réglable dans un trou oblong (35) dans le support de dossier (3), les extrémités du trou oblong (35) étant situées à des distances différentes de l'axe (33) autour duquel le support de dossier (3) peut pivoter.
  4. Chaise selon la revendication 3, caractérisée en ce que le trou oblong (35) se trouve en arc sur un rayon autour de l'axe de pivotement (55) du levier d'entraínement (5).
  5. Chaise selon l'une des revendications précédentes, caractérisée en ce que le support de dossier (3) présente un prolongement (34) allant au-delà de son axe de pivotement (33) et constituant un bras de levier et en ce que le point d'attaque (43) du ressort (4) se trouve dans ce prolongement (34).
  6. Chaise selon la revendication 5, caractérisée en ce que le prolongement (34) du support de dossier (3) est courbé ou plié vers le bas relativement au reste du support de dossier (3).
  7. Chaise selon la revendication 6, caractérisée en ce que la direction longitudinale du prolongement (34) et la direction longitudinale du ressort (4) sont à peu près à angle droit l'une par rapport à l'autre à l'état du dossier (30) non soumis à charge.
  8. Chaise selon l'une des revendications 2 à 7, caractérisée en ce que le levier d'entraínement (5) est déplaçable à partir d'une position centrale tournée dans la direction longitudinale du ressort (4) sur une plage d'angle s'étendant de part et d'autre de celle-ci.
  9. Chaise selon l'une des revendications 2 à 8, caractérisée en ce que le levier d'entraínement (5) est pourvu d'un levier d'actionnement (50) pour modifier et déterminer la position de pivotement du levier d'entraínement (5) relativement au support de dossier (3).
  10. Chaise selon la revendication 9, caractérisée en ce que le levier d'entraínement (5) et son levier d'actionnement (50) sont réunis pour former un composant constituant un levier à deux bras, composant dont le support de pivotement est réalisé avec une force de frottement pouvant être surmontée manuellement et excluant un déplacement automatique du levier.
  11. Chaise selon l'une des revendications précédentes, caractérisée en ce que le ressort (4) est un ressort à pression orienté dans le sens longitudinal de la chaise et dont l'extrémité avant (42) prend appui dans un porte-ressort fixe (22) proche du bord avant du plateau de siège (20) sur le support de siège (2) et dont l'extrémité arrière (41) est l'extrémité de ressort en prise avec le support de dossier (3).
EP02010018A 2001-05-14 2002-05-04 Chaise, notamment chaise de bureau, avec dossier ayant une précharge réglable Expired - Lifetime EP1258212B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123316A DE10123316A1 (de) 2001-05-14 2001-05-14 Stuhl, insbesondere Bürostuhl, mit einstellbarer Rückenlehnen-Vorbelastungskraft
DE10123316 2001-05-14

Publications (3)

Publication Number Publication Date
EP1258212A2 EP1258212A2 (fr) 2002-11-20
EP1258212A3 EP1258212A3 (fr) 2003-10-22
EP1258212B1 true EP1258212B1 (fr) 2005-07-27

Family

ID=7684674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010018A Expired - Lifetime EP1258212B1 (fr) 2001-05-14 2002-05-04 Chaise, notamment chaise de bureau, avec dossier ayant une précharge réglable

Country Status (5)

Country Link
EP (1) EP1258212B1 (fr)
AT (1) ATE300209T1 (fr)
DE (2) DE10123316A1 (fr)
DK (1) DK1258212T3 (fr)
ES (1) ES2247218T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10813458B2 (en) 2016-07-08 2020-10-27 Co.Fe.Mo. Industrie S.R.L. Tilting mechanism for chairs

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302208A1 (de) * 2003-01-22 2004-07-29 Klöber GmbH Stuhl mit schnell verstellbarem Kraftspeicher
ITVE20050027A1 (it) * 2005-04-28 2006-10-29 Imarc Spa Dispositivo di regolazione della forza di oscillazione in meccanismi per sedie da ufficio.
ITMI20070719A1 (it) * 2007-04-06 2008-10-07 L & P Property Management Co Dispositivo di inclinazione per un sedile reclinabile.
DE102007040175B3 (de) * 2007-05-07 2008-06-05 Bock 1 Gmbh & Co. Kg Synchronmechanik für Bürostühle
GB0806958D0 (en) * 2008-04-17 2008-05-21 Simclar Seating Technologies L Chair back tilt tensioning
WO2011141107A1 (fr) 2010-04-15 2011-11-17 Armin Sander Mécanisme de réglage d'une force de rappel agissant sur le dossier d'un siège et siège de bureau doté d'un mécanisme de ce type
CN103957749B (zh) 2011-08-03 2017-02-22 霍沃思公司 设置作用在座椅靠背上的恢复力的调节机构以及具有这类调节机构的办公座椅
DE202013100574U1 (de) * 2013-02-07 2014-05-08 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
DE102014104870A1 (de) 2014-04-04 2015-10-08 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
DE102014226645B4 (de) 2014-12-19 2023-10-05 Hangzhou Zhongtai Industrial Group Co., Ltd. Verstellmechanik zur Einstellung einer auf eine Rückenlehne eines Stuhls einwirkenden Rückstellkraft und Bürostuhl mit einer solchen Verstellmechanik
ITUB20154688A1 (it) 2015-10-15 2017-04-15 Co Fe Mo Ind S R L Meccanismo di oscillazione per sedie regolabile
PL3556252T3 (pl) * 2018-04-17 2020-11-16 L&P Property Management Company Mechanizm przechyłu dla krzesła i krzesło

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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
DE4312113C1 (de) * 1993-04-14 1994-10-27 Mauser Waldeck Ag Sitzmöbel
DE4324543C2 (de) * 1993-07-22 2003-06-26 Dauphin Friedrich W Gmbh Stuhl, insbesondere Bürostuhl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10813458B2 (en) 2016-07-08 2020-10-27 Co.Fe.Mo. Industrie S.R.L. Tilting mechanism for chairs

Also Published As

Publication number Publication date
EP1258212A2 (fr) 2002-11-20
DE50203720D1 (de) 2005-09-01
ATE300209T1 (de) 2005-08-15
EP1258212A3 (fr) 2003-10-22
DE10123316A1 (de) 2002-11-28
DK1258212T3 (da) 2005-11-28
ES2247218T3 (es) 2006-03-01

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