EP2070445B1 - Dispositif destiné au réglage de la force de ressort d'un siège de bureau - Google Patents

Dispositif destiné au réglage de la force de ressort d'un siège de bureau Download PDF

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Publication number
EP2070445B1
EP2070445B1 EP08020663A EP08020663A EP2070445B1 EP 2070445 B1 EP2070445 B1 EP 2070445B1 EP 08020663 A EP08020663 A EP 08020663A EP 08020663 A EP08020663 A EP 08020663A EP 2070445 B1 EP2070445 B1 EP 2070445B1
Authority
EP
European Patent Office
Prior art keywords
detent
bearing
articulation axis
spring
manual drive
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
EP08020663A
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German (de)
English (en)
Other versions
EP2070445A1 (fr
Inventor
Thomas Stenzel
Kurt Buntru
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.)
Sedus Stoll AG
Original Assignee
Sedus Stoll AG
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Filing date
Publication date
Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP2070445A1 publication Critical patent/EP2070445A1/fr
Application granted granted Critical
Publication of EP2070445B1 publication Critical patent/EP2070445B1/fr
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
    • 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
    • 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 present invention relates to a device for adjusting the effective spring force to return a tilting backrest and a tilting seat of an office chair with a spring with pivot axis and a detent bearing with a plurality of locking recesses for the pivot axis of the spring, with first means for disengaging the pivot axis of the locking recesses and with second, operable by a hand drive means for adjusting the pivot axis between the positions of the locking recesses.
  • each user can set the effective spring force so that it compensates in each Nelgungswolf of the backrest and seat, the forces exerted by these forces on these parts just.
  • Such a device is out EP 1 440 632 A1 known, with the spring fixedly hinged to a front seat link and the locking bearing in the central region of the office chair near its pedestal arranged and connected there with a backrest support of the backrest.
  • the hand drive is also located in the central area of the office chair near the pedestal.
  • a arranged next to the tooth wider end face of the guide sleeve is always when the backrest is in its front basic position with the lowest inclination, on the rack without engagement in the locking recesses and simultaneously prevents engagement of the tooth in one of the locking recesses.
  • the tooth is thus easily adjustable in the basic position of the backrest with the manual drive between the positions of the locking recesses. In engagement with one of the locking recesses, the tooth comes only by pivoting the block in the backrest tilting. With the return of the backrest to its normal position, the tooth is disengaged again by the end face from the respective detent recess.
  • a device for adjusting the spring force in an office chair in which the backrest is tiltably attached to a backrest support.
  • a locking bearing On an axis of the backrest support a locking bearing is attached, which is formed as a toothed guide rail and connected by a tension spring with the housing.
  • a compression spring Also mounted in the housing is a compression spring having a pivot axis which has a curved and toothed surface which engages the latching bearing.
  • a gear connected to a handwheel engages the toothed inner surface of the elongate, curved part.
  • the position of the articulation axis can be changed relative to the detent bearing.
  • the two toothed surfaces are pushed over each other.
  • the object of the invention is to provide a novel device of the type mentioned, which without a jerky Engaging the pivot axis at each of the backrest tilt back and withoutprooffordem their users additional handles, a smooth adjustment of the effective spring force with the manual drive allows.
  • the pivot axis is locked permanently and independently of the position of the backrest in one of the locking recesses and is disengaged only to adjust between two locking recesses. The adjustment is always only gradually between two adjacent locking positions.
  • the adjusting device according to the invention is preferably mounted on a front seat link of the tiltable seat and moves with it.
  • the seat and 20 which are each pivotally mounted in a housing 10 arranged under the housing 30.
  • the housing 30 is carried by a pedestal 40 and is part of or includes parts of a synchronizing mechanism for positively coupling the seat to the seat back.
  • the seat 10 has a lower seat plate 11 and thereon a seat pad 12.
  • the backrest 20 comprises a two-armed backrest support 21 and also provided with a padding 23 backrest plate 22nd
  • Fig. 1 shows the seat 10 and the backrest 20 in their normal position with the lowest inclination
  • Fig. 2 shows the seat 10 and the backrest 20 in their position with maximum inclination.
  • Seat 10 and backrest 20 can only move together because of a forced coupling in the synchronizing mechanism, wherein the seat 10 is also displaced horizontally.
  • the housing 30 is divided into two along a central vertical plane and has two mirror-image housing shells 31.
  • the synchronous mechanism is partially constructed in mirror image to this vertical plane, so that some of their parts are present in pairs in mirror image.
  • the seat 10 In the area of its front edge, the seat 10 is mounted in the housing 30 via a pair of front seat links 60 with a bearing 61 fixed to the housing and bearings 62 fixed in the seat. In its rear area, the seat 10 is mounted in the housing 30 via a pair of rear seat links 50 with housings 51 arranged behind the pedestal 40 and seat-fixed bearings 52 fixed to the housing.
  • the backrest 20 and the arms of the backrest support 21 are mounted on the housing 30 in the housing fixed, arranged in front of the pedestal 40 bearings 24.
  • the positive coupling between the seat 10 and the backrest 20 is made via a pair of connecting rods 55 which are articulated on the arms of the backrest support 21 in bearings 25 and on the other hand in bearings 54 on a pair of second lever arms 53 of the rear seat uprights 50, as for example in Fig. 4 can be seen.
  • Seat 10 and backrest 20 are according to a spring 70 with a restoring force in their normal position Fig. 1 loaded, wherein the spring 70 is articulated with a first spring head 71 to the bearings 25 of the back support 21 and a second spring head 2 to a locking bearing 81.
  • the spring 70 is stabilized by a telescopic rod 73 carrying the two spring heads.
  • the locking bearing 81 is mounted on a front side between the front seat links 60 and connected thereto block 80 and is formed by a series of groove-like locking recesses. In each case one of these locking recesses engages a pivot axis of the spring 70 on the locking bearing 81 forming, in the second Spring head 72 held detent pin 74 each one and is held by a certain bias of the spring 70 therein.
  • the locking pin 74 is in the FIGS. 6 and 7 visible, noticeable. In the FIGS. 4 and 5 the locking pin 74 is covered by a pivoting lever 95 of a pair of such pivot lever 95. At the position of the second spring head 72, however, it can be seen that he in Fig. 4 in a detent recess at the bottom and in Fig. 5 engages in a latching recess at the upper end of the latching bearing 81.
  • the means for adjusting this position comprise at the front seat arms 60 a manual drive with a hand wheel 90 and a drive axle 91, a planetary gear with a sun gear 92, a ring gear 93 and three planetary gears 94, the aforementioned pair of pivot levers 95 and a pair of Schiebelagem 96th each on both sides of the block 80.
  • the sliding bearing 96 have on their front side in each case a parallel to the locking bearing 81 aligned, substantially smooth displacement surface 97 and are parallel to the block 80 between two positions displaced. In the one, hereinafter referred to as 0-position position they close with their displacement surface 97 flush with the bottom of the locking recesses.
  • the drive shaft 91 of the manual drive engages in the block 80 and is there rotatably connected to the sun gear 92 of the planetary gear.
  • the ring gear 93 is rotatably mounted in the block 80, but has at its outer periphery two 180 ° offset from each other arranged cam 98, with which it abuts each of the sliding bearings 96 when they are in their 0-position.
  • the corresponding rotational position of the ring gear 93 is also referred to below as 0-position.
  • the two pivot levers 95 each engage with three pins in the planet gears 94 and thereby form planet carrier of the planetary gear, which is not visible in the figures. Towards their free end, the pivot lever 95 are provided with a likewise not visible in the figures scenery in the manner of a slot into which the locking pin 74 engages each.
  • the locking pin 74 In the in Fig. 7a ) shown position, the locking pin 74 is in engagement with the lowermost locking recess of the latching bearing 81st In the in Fig. 7d ) shown position, the locking pin 74 is in engagement with the adjacent, second lowermost locking recess. In both detent positions are the two sliding bearing 96 and the ring gear 94 in its 0-position.
  • the hand wheel 90 For adjusting the locking pin 74 from his in Fig. 7a ) in the position shown in Fig. 7d ), the hand wheel 90 is rotated clockwise. With the rotation of the handwheel 90, the sun gear 92 as well as the planetary gears 94 of the planetary gear rotate.
  • the locking pin 74 is now free, which also the mentioned blocking of the two pivot lever / planetary carrier 95 is repealed, which can thereby rotate and the locking pin 74 on the sliding surfaces 97 in the in Fig. 7c ) Move position. There he then snaps immediately under the action of the spring according to the new locking recess Fig. 7d ) one. The two sliding bearings 96 are thereby moved back to their 0-position and the ring gear 93 also rotated back in its 0-position while rotating clockwise. This completes the adjustment process.
  • the detent pin 74 can be adjusted step by step along the entire detent bearing 81 and, by reversing the direction of rotation on the handwheel 90, the adjustment direction can be changed.

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)

Claims (6)

  1. Dispositif pour le réglage de la force de réaction à l'adossement d'un dossier inclinable (20) et d'une assise inclinable (10) avec un ressort à axe d'articulation (74) et un boîtier de retenue (81) à plusieurs logements de retenue pour l'axe d'articulation (74) du ressort (70), avec des premiers moyens (92, 93, 96) pour extraire l'axe d'articulation (74) des logements de retenue et avec des deuxièmes moyens (92, 94, 95) couplés à une poignée de manoeuvre (90, 91) pour ajuster l'axe d'articulation (74) entre les positions des logements de retenue, dans lequel les deuxièmes moyens (92, 94, 95) comprennent un bras de manivelle (95) couplé en rotation avec un arbre de manoeuvre (91) de la poignée de manoeuvre (90, 91), lequel axe est en prise de l'autre côté avec l'axe d'articulation (74) du ressort (70) à travers une liaison à rainure, et les premiers moyens (92, 93, 96) sont aussi couplés avec la poignée de manoeuvre (90, 91), caractérisé en ce que
    les premiers moyens (92, 93, 96) sont couplés avec la poignée de manoeuvre (90, 91) de façon à ce que, lors de l'actionnement de la poignée de manoeuvre (90, 91), sont manoeuvrés tout d'abord les premiers moyens (92, 93, 96) jusqu'à obtenir une extraction de l'axe d'articulation (74) de l'un des logements de retenue et ensuite les deuxièmes moyens (92, 94, 95) jusqu'à obtenir le réglage et le nouvel engagement de l'axe d'articulation (74) dans un logement de retenue voisin,
    en ce que l'arbre de manoeuvre (91) de la poignée de manoeuvre (90, 91) est liée solidairement avec le planétaire (92) et le bras de manivelle (95) avec les satellites d'un engrenage épicycloïdal ou forment un tel engrenage, en ce que les premiers moyens (92, 93, 96) comprennent un boîtier mobile (96) qui, lors de l'extraction de l'axe d'articulation (74) hors du logement de retenue du boîtier de retenue (81), est amené contre celui-ci et qui présente une surface mobile (97), sur laquelle l'axe d'articulation (74) peut être amené en position extraite par rapport au boîtier de retenue (81), et
    en ce que le boîtier mobile (96) est couplé avec la couronne (93) de l'engrenage épicycloïdal et lors de la rotation de la couronne (93) est déplacé devant ou derrière le boîtier de retenue (81).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'un bras de manivelle (95) est prévu des deux côtés du boîtier de retenue (81).
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'un boîtier mobile (96) est prévu des deux côtés du boîtier de retenue (81).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'axe d'articulation est une cheville de retenue (74) maintenue dans une tête (72) du ressort (70).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le boîtier de retenue (81) est réalisé sur un bloc (80), qui porte aussi les premiers moyens (92, 93, 96) pour l'extraction de l'axe d'articulation (74) hors des logements de retenue et les deuxièmes moyens (92, 94, 95) pour le réglage de l'axe d'articulation (74) entre les positions des logements de retenue.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'il est monté sur un bras avant (60) de l'assise inclinable (10) et se déplace avec celui-ci.
EP08020663A 2007-12-11 2008-11-27 Dispositif destiné au réglage de la force de ressort d'un siège de bureau Active EP2070445B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007059985A DE102007059985B3 (de) 2007-12-11 2007-12-11 Vorrichtung zur Federkraftverstellung bei einem Bürostuhl

Publications (2)

Publication Number Publication Date
EP2070445A1 EP2070445A1 (fr) 2009-06-17
EP2070445B1 true EP2070445B1 (fr) 2010-10-20

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ID=40394218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08020663A Active EP2070445B1 (fr) 2007-12-11 2008-11-27 Dispositif destiné au réglage de la force de ressort d'un siège de bureau

Country Status (4)

Country Link
EP (1) EP2070445B1 (fr)
AT (1) ATE484980T1 (fr)
DE (1) DE102007059985B3 (fr)
ES (1) ES2355006T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010010115U1 (de) * 2010-07-09 2011-11-21 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
DE202015100511U1 (de) * 2015-02-03 2016-05-04 Bock 1 Gmbh & Co. Kg Synchronmechanik
DE102018115925A1 (de) * 2018-07-02 2020-01-02 König + Neurath AG Stuhl
DE102018115924A1 (de) 2018-07-02 2020-01-02 König + Neurath AG Stuhl

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
DE10126000A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Synchronmechanik für die simultane Sitzflächen- und Rückenlehnen-Schwenkbewegung bei Bürostühlen
DE10302208A1 (de) * 2003-01-22 2004-07-29 Klöber GmbH Stuhl mit schnell verstellbarem Kraftspeicher
DE102006047889B4 (de) * 2006-10-10 2008-10-23 Interstuhl Büromöbel GmbH & Co. KG Sitzmöbel, insbesondere Bürostuhl
DE202007006762U1 (de) * 2006-10-13 2008-02-14 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
EP2129263A1 (fr) * 2007-03-08 2009-12-09 Steelcase Sa Mecanisme de reglage synchronise de la tension de basculement d'un siege

Also Published As

Publication number Publication date
EP2070445A1 (fr) 2009-06-17
DE102007059985B3 (de) 2009-04-09
ES2355006T3 (es) 2011-03-22
ATE484980T1 (de) 2010-11-15

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