EP0995372B1 - Bürostuhl mit einer nachführbaren Rückenlehne - Google Patents
Bürostuhl mit einer nachführbaren Rückenlehne Download PDFInfo
- Publication number
- EP0995372B1 EP0995372B1 EP99120681A EP99120681A EP0995372B1 EP 0995372 B1 EP0995372 B1 EP 0995372B1 EP 99120681 A EP99120681 A EP 99120681A EP 99120681 A EP99120681 A EP 99120681A EP 0995372 B1 EP0995372 B1 EP 0995372B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- assembly
- office chair
- spring
- support
- 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
Links
Images
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
- A47C1/03266—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
-
- 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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/03—Locking members
Definitions
- the invention relates to an office chair a backrest, the backrest support pivotable on a horizontal axis stationary chair holder is stored such that the backrest support against the Pressure of a return spring can be pivoted backwards is and by means of the restoring force the return spring one facing forward Movement of the upper body of the seat user follows.
- a special feature of such office chairs trackable backrest consists of that for certain office jobs where the back of the seat user is static
- the backrest support needs support in a swiveled forward Position by means of a locking device should be lockable.
- the invention was therefore based on the object a new return spring or a new one To develop the spring package that the desired has greater dynamism and (as before) in one forward pivoted position of the backrest support can be blocked or locked where there was another task, that the searched return spring or the new return spring package you are looking for same outer dimensions, mounting connections and should have operating procedures, to optionally also against a gas pressure spring or a gas pressure / metal spring assembly known Design to be replaced.
- the return spring in the form of a mechanical helical compression spring is formed, those between one assigned to the backrest support Thrust bearing and one assigned to the chair holder Thrust bearing is arranged, and that coaxially in the helical compression spring plunger attached to a thrust bearing exists in one in which other thrust bearing attached immersion sleeve runs, with the plunger moving radially has locking stops that can be opened on the outside, those in the issued state and in a largely extended position of the plunger on the peripheral edge of the Mount the immersion sleeve.
- the new plunger lockable metal pressure spring can with an additional outer Coil compression spring that coaxially the inside encloses the first metal compression spring, be combined into a metal spring package, like this from the drawings for this patent application is removable.
- the plunger lock ensures this the metal compression spring that the backrest support in a forward position of the backrest can be locked just as easily, like the seat user of the old gas spring technology knows.
- Such spreading scissors (de facto two in opposite directions around a common scissor axis movable rocker arm) has the advantage that squeezing the handling ends the spreading scissors in the simplest way and done permanently by spring force can.
- the plunger with his Piston area in which the end pieces of the Spreading scissors are positioned inside the immersion sleeve the remain end pieces intended as locking stops ineffective, since it is only on the inner wall slide along the immersion sleeve.
- swiveled forward Position of the backrest can the end pieces take effect, namely, when they come out of the pocket are and as locking stops on the Sit on the circumferential surface of the immersion sleeve.
- Another improvement of the new plunger lockable Metal compression spring is after Claim 2 characterized in that the Has circumferential edge of the immersion sleeve gradations, which correspond to the width of the Locking stops designed and in axial Staggered towards each other are so that by a rotational movement the immersion sleeve around its axis other graduated peripheral edge of the immersion sleeve for mounting the locking stops can be used. Accordingly, can the user of the seat preferred by him front locking position of the backrest select or set.
- FIG. 1 is a simplified side view the chair holder 5 of an office chair with a trackable backrest support 6 (swiveling about axis 7) and one synchronously thus pivotable seat support 8 shown. So that the synchronous adjustment is executable, the backrest support 6 via the axis 9 with the seat support 8 connected.
- the seat support has at the front end one firmly attached to it Sliding axis 10 in two congruent Slot control cams 11 in the side walls the chair holder 5 is guided.
- the control curves run from the front down to the back rising at the top, so that there is an increasing Displacement of the sliding axis 10 results when the backrest support 6 from its illustrated front backrest position in his (not shown) back back position is moved.
- the spring assembly 12 is shown in FIGS. 2 to 4 shown in more detail. It consists of one inner cylindrical helical compression spring 14 and an outer, coaxially arranged Helical compression spring 15. Both springs are separated from each other by the pipe section 16.
- the inner helical compression spring is between the disk 17 and the pot housing 18th clamped, and the outer helical compression spring lies on the one hand on the plate disk 17 and on the other hand on the screw cap 19 for the purpose of changing the preload the outer helical compression spring 15 on the external thread of the pot housing 18 can be adjusted axially.
- the plunger 21 is integral with the Plate 17 and the one shown on the left Crosshead 22 formed. He has one slot-like milling in which the two Rocker arms 23 and 24 of an expanding shear the scissors axis 25 are attached.
- the End pieces 26 and 27 of the spreading shears run in the position shown in FIG Plunger in the immersion sleeve 20 and sit in the shown in Fig. 4 Position of the plunger on the peripheral edge the immersion sleeve 20.
- the handling ends 28 and 29 of the spreading scissors are permanent by the U-shaped Leaf spring 30 loaded so that the end pieces 26 and 27 permanently the trend have, radially outwards from the cutout extend the plunger 21 and on the To sit on the peripheral edge of the immersion sleeve 20, as soon as the maximum extended from the immersion sleeve Position of the plunger this allowed.
- the spring assembly is then blocked i.e. the backrest support 6 of the office chair is then locked.
- a lever arrangement 30/31 (see Fig. 1) press on the feed wedge 32 acts by means of the handling ends 28 and 29 the spreading scissors against the pressure the U-shaped leaf spring 30 moved apart can be, so that the end pieces 26 and 27 of the spreading scissors again in their in the milling of the Plunger retracted position in which they with the plunger 21 in the Immersion sleeve 20 can be retracted.
- the ones at the bottom of the pocket Rubber balls 33 serve as an end stop at Retracting the plunger into the immersion sleeve.
- the lever arrangement 30/31 in the chair support 5 the office chair is in a known manner built that by an at least 90 ° swivel of the smaller lever 31 the larger lever 30 in a permanent position (Stop position) can be brought in the larger lever 30 the feed wedge 32 mechanically in the position according to Fig. 2 fixed in the locking the backrest support 6 not possible is.
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)
Description
- Fig. 1
- eine prinzipielle Darstellung eines Bürostuhls mit nachführbarer Rückenlehne,
- Fig. 2
- einen Längsschnitt durch ein tauchkolben-arretierbares Metallfederpaket gemäß der Erfindung,
- Fig. 3
- eine um 90° gedrehte Seitenansicht mit teilweiser Schnittdarstellung des Federpakets gemäß Fig. 2,
- Fig. 4
- das Federpaket gemäß Fig. 2 in seiner Arretierposition.
Claims (6)
- Bürostuhlmit einer Rückenlehne, deren Rückenlehnenträger um eine horizontale Achse schwenkbar an einem ortsfest gehaltenen Stuhlträger gelagert istderart, daß der Rückenlehnenträger gegen den Druck einer Rückstellfeder nach hinten verschwenkbar ist und mittels der Rückstellkraft der Rückstellfeder einer nach vorne gerichteten Bewegung des Oberkörpers des Sitzbenutzers folgt,wobei der Rückenlehnenträger in einer nach vorne verschwenkten Position mittels einer Arretiervorrichtung arretierbar ist,daß die Rückstellfeder in Form einer mechanischen Schraubendruckfeder (14) ausgebildet ist, die zwischen einem dem Rückenlehnenträger (6) zugeordneten Drucklager (10) und einem dem Stuhlträger (5) zugeordneten Drucklager (13) angeordnet ist.daß koaxial in der Schraubendruckfeder ein an dem einen Drucklager (13) befestigter Tauchkolben (21) vorhanden ist, der in einer an dem anderen Drucklager (10) befestigten Tauchhülse (20) läuft,und daß der Tauchkolben (21) radial nach außen ausstellbare Arretieranschläge (26, 27) besitzt, die im ausgestellten Zustand und in einer weitgehend ausgefahrenen Position des Tauchkolbens auf dem Umfangsrand der Tauchhülse (20) aufsitzen.
- Bürostuhl nach Anspruch 1,
dadurch gekennzeichnet,daß die Tauchhülse um ihre Achse rotierbar istund daß der Umfangsrand der Tauchhülse Abstufungen aufweist, die entsprechend der Breite der Arretieranschläge ausgebildet und in axialer Richtung zueinander versetzt sind. - Bürostuhl nach Anspruch 1 oder 2,
dadurch gekennzeichnet,daß die Arretieranschläge durch die Endstücke (26, 27) einer Spreizschere gegeben sind, die in dem Tauchkolben (21) gelagert ist und deren Endstücke beim Zusammendrücken der Handhabungsenden (28, 29) der Spreizschere aus der Umfangsfläche des Tauchkolbens heraustreten. - Bürostuhl nach Anspruch 3,
dadurch gekennzeichnet,daß das Zusammendrücken der Handhabungsenden (28, 29) der Spreizschere permanent durch Federkraft (30) erfolgtund daß zum Einziehen der Endstücke der Spreizschere in den Tauchkolben die Handhabungsenden der Spreizschere mittels eines Vorschubkeiles (32) auseinandergedrückt werden. - Bürostuhl nach Anspruch 4,
dadurch gekennzeichnet,daß der Vorschubkeil (32) in seiner vorgeschobenen Position, in der er die Handhabungsenden der Spreizschere auseinanderdrückt, mechanisch fixiert werden kann. - Bürostuhl nach Anspruch 1 oder 2,
dadurch gekennzeichnet,daß die Arretieranschläge durch einen oder mehrere pneumatisch aus- und einfahrbare Stellkolben gebildet sind, die über einen druckluftdichten Verbindungschlauch mit einem aus- und einfahrbaren Steuerkolben kommunizieren.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19849521A DE19849521A1 (de) | 1998-10-21 | 1998-10-21 | Bürostuhl mit nachführbarer Rückenlehne |
DE19849521 | 1998-10-21 | ||
DE29819143U DE29819143U1 (de) | 1998-10-21 | 1998-10-21 | Bürostuhl mit einer nachführbaren Rückenlehne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995372A1 EP0995372A1 (de) | 2000-04-26 |
EP0995372B1 true EP0995372B1 (de) | 2003-04-09 |
Family
ID=42320198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120681A Expired - Lifetime EP0995372B1 (de) | 1998-10-21 | 1999-10-19 | Bürostuhl mit einer nachführbaren Rückenlehne |
Country Status (3)
Country | Link |
---|---|
US (1) | US6283548B1 (de) |
EP (1) | EP0995372B1 (de) |
DE (3) | DE19849521A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2518216C2 (ru) * | 2008-07-04 | 2014-06-10 | Мацей ШИМАНСКИ | Кресло |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20003313U1 (de) * | 2000-02-23 | 2001-07-05 | König + Neurath AG, 61184 Karben | Federeinheit zur Gewichtseinstellung eines Stuhls |
DE10241562A1 (de) | 2002-09-07 | 2004-03-18 | Bock-1 Gmbh & Co. | Synchronmechanik für Bürostühle |
US6880886B2 (en) * | 2002-09-12 | 2005-04-19 | Steelcase Development Corporation | Combined tension and back stop function for seating unit |
US6969116B2 (en) * | 2003-12-30 | 2005-11-29 | Hni Technologies Inc. | Chair with backward and forward passive tilt capabilities |
HK1064859A2 (en) * | 2004-06-21 | 2005-01-14 | Yu Yeung Tin | Synchronous coordinate system of back of chair. |
DE102009020244A1 (de) * | 2009-05-07 | 2010-11-11 | Ferdinand Lusch Gmbh & Co Kg | Sitzmöbel mit verstellbarer Sitzposition |
DE102009025993B3 (de) | 2009-06-18 | 2011-01-20 | C. Ed. Schulte Gesellschaft mit beschränkter Haftung Zylinderschloßfabrik | Schließeinrichtung sowie Schlüssel für eine Schließeinrichtung |
JP5643819B2 (ja) * | 2010-05-26 | 2014-12-17 | タカノ株式会社 | 椅子の背凭れ用反力機構及びこれを組み込んだ椅子 |
JP6040566B2 (ja) * | 2012-05-15 | 2016-12-07 | コクヨ株式会社 | 椅子 |
EP2886015B1 (de) * | 2013-12-17 | 2016-07-13 | Donati S.p.A. | Stuhl mit anpassbarer Rückenlehne |
CA2852691A1 (en) * | 2014-05-27 | 2015-11-27 | Keilhauer Ltd. | Seat pan-based spring tilt mechanism |
GB2551737B (en) | 2016-06-28 | 2019-06-05 | Posturite Ltd | Seat tilting mechanism with two springs |
IT201600071468A1 (it) * | 2016-07-08 | 2018-01-08 | Co Fe Mo Ind S R L | Meccanismo di oscillazione per sedie |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4479679A (en) * | 1981-06-08 | 1984-10-30 | Steelcase Inc. | Body weight chair control |
DE3521488A1 (de) * | 1985-06-14 | 1986-12-18 | August Fröscher GmbH & Co KG, 7141 Steinheim | Arbeitsstuhl |
IT1210753B (it) * | 1987-05-20 | 1989-09-20 | Pro Cord Srl | Sopporto oscillante per sedie sedili e simili |
DE3724605C2 (de) * | 1987-07-24 | 1994-02-03 | Inaba Seisakusho Ltd | Sitzmöbel |
US5026117A (en) * | 1987-11-10 | 1991-06-25 | Steelcase Inc. | Controller for seating and the like |
US4889384A (en) * | 1988-07-10 | 1989-12-26 | Leggett & Platt, Incorporated | Knee-action chair control |
DE3900220A1 (de) * | 1989-01-05 | 1990-07-12 | Wilkhahn Wilkening & Hahne | Stuhl |
DE4038072A1 (de) * | 1990-11-29 | 1992-06-04 | Uredat Ind Design | Hoehenverstellung fuer das sitzelement eines stuhls |
DE4308455A1 (de) * | 1993-03-17 | 1994-09-22 | Suspa Compart Ag | Einstell-Vorrichtung für durch Druckmedium längenverstellbare Träger |
ES2110875B1 (es) * | 1994-04-21 | 1998-11-16 | Jevit Manufact Metalicas Sa | Sillon ergonomico autoequilibrado. |
DE29516840U1 (de) * | 1995-10-25 | 1995-12-14 | Völkle, Rolf, 72290 Loßburg | Rückstellvorrichtung für einen Stuhl |
US5909924A (en) * | 1997-04-30 | 1999-06-08 | Haworth, Inc. | Tilt control for chair |
-
1998
- 1998-10-21 DE DE19849521A patent/DE19849521A1/de not_active Withdrawn
- 1998-10-21 DE DE29819143U patent/DE29819143U1/de not_active Expired - Lifetime
-
1999
- 1999-10-19 DE DE59904932T patent/DE59904932D1/de not_active Expired - Fee Related
- 1999-10-19 EP EP99120681A patent/EP0995372B1/de not_active Expired - Lifetime
- 1999-10-21 US US09/422,490 patent/US6283548B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2518216C2 (ru) * | 2008-07-04 | 2014-06-10 | Мацей ШИМАНСКИ | Кресло |
Also Published As
Publication number | Publication date |
---|---|
DE19849521A1 (de) | 2000-04-27 |
EP0995372A1 (de) | 2000-04-26 |
DE29819143U1 (de) | 1999-02-11 |
US6283548B1 (en) | 2001-09-04 |
DE59904932D1 (de) | 2003-05-15 |
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