DE20306014U1 - Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest - Google Patents

Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest

Info

Publication number
DE20306014U1
DE20306014U1 DE20306014U DE20306014U DE20306014U1 DE 20306014 U1 DE20306014 U1 DE 20306014U1 DE 20306014 U DE20306014 U DE 20306014U DE 20306014 U DE20306014 U DE 20306014U DE 20306014 U1 DE20306014 U1 DE 20306014U1
Authority
DE
Germany
Prior art keywords
seat
spring
piston
rotation
gas
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
DE20306014U
Other languages
German (de)
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.)
Vitra AG
Original Assignee
Vitra Patente AG
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 Vitra Patente AG filed Critical Vitra Patente AG
Priority to DE20306014U priority Critical patent/DE20306014U1/en
Publication of DE20306014U1 publication Critical patent/DE20306014U1/en
Priority to AT04405212T priority patent/ATE333228T1/en
Priority to ES04405212T priority patent/ES2268606T3/en
Priority to EP04405212A priority patent/EP1468633B1/en
Priority to DE502004000970T priority patent/DE502004000970D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A47C1/03272—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
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

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)

Abstract

The seat gas spring (6) has a sealed housing (60) which surrounds it and a gas chamber (61) inside which is a cylinder (62) with a piston (63) which moves in the direction of actuation and has a diametric axial direction defined. A spring (68) is moved by the piston in the direction of motion and in an exit position has a perpendicular position to the seat and rear seat rest. A section of the piston is visible through the housing.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (8)

1. Mechanik für einen Stuhl mit einer ersten Gasfeder (6) zur syn­ chronen Steuerung der Neigung seines Sitzes (3) und einer daran in einer ver­ lagerbaren Drehachse (D2) angelenkten Rückenlehne (2), wobei:
  • a) der Sitz (3) auf einem auf dem Boden aufsetzenden Untergestell (4, 10) ruht;
  • b) die erste Gasfeder (6) einerseits in einer Drehachse (D3) am Frontbereich (30) des Sitzes (3) und andererseits in einer Drehachse (D4) am Unterge­ stell (4, 10) angelenkt ist;
  • c) die erste Gasfeder (6) ein abgedichtetes Gehäuse (60) umgibt, das eine Gaskammer (61) einschliesst;
  • d) innerhalb der Gaskammer (61) ein Kolben (62) mit der davon abgehenden Kolbenstange (63) begrenzt axial verschiebbar angeordnet ist; und
  • e) die Kolbenstange (63) sich vom Kolben (62) weg in Austriebsrichtung er­ streckt, während die diametrale Axialrichtung als Einschubrichtung definiert wird, dadurch gekennzeichnet, dass
  • f) vor dem Kolben (62), in Austriebsrichtung, ein Federelement (68) angeord­ net ist;
  • g) der Kolben (62) in der Ausgangsposition, mit im Prinzip waagerechtem Sitz (3) und senkrechter Rückenlehne (2), am Federelement (68) in einer Null­ stellung (z0) ansteht und bei Gewichtskonzentration auf den Frontbereich (30) des Sitzes (3), wie beim Vorbeugen eines Benutzers hervorgerufen, sich der Abstand zwischen den beiden die erste Gasfeder (6) einschliessen­ den Drehachsen (D3, D4) vergrössert; wodurch
  • h) der Kolben (62) gegen das Federelement (68) wirkt und sich über die Nullstellung (z0) hinaus, entgegengesetzt der Einschubrichtung, nämlich weiter in Austriebsrichtung, über einen Weg (s2), bis in eine vorgezogene Endlage (22) bewegen kann und sich dabei der Frontbereich (30) des Sitzes (3) gegen die Wirkung des Federelements (68) aus der Nullstellung (x0) in eine zum Boden geneigte Negativstellung (x2) absenkt; wobei
  • i) der Bewegung des Sitzes (3) eine synchrone Verstellung der Rückenlehne (2) mit Vorwärtsneigung folgt und der Stuhl sich dadurch in die Schreibposi­ tion verstellt.
1. Mechanics for a chair with a first gas spring ( 6 ) for synchronous control of the inclination of its seat ( 3 ) and a backrest ( 2 ) articulated thereon in a pivotable axis of rotation (D2), wherein:
  • a) the seat ( 3 ) rests on a base ( 4 , 10 ) resting on the floor;
  • b) the first gas spring ( 6 ) is articulated on the one hand in an axis of rotation (D3) on the front region ( 30 ) of the seat ( 3 ) and on the other hand in an axis of rotation (D4) on the base ( 4 , 10 );
  • c) the first gas spring ( 6 ) surrounds a sealed housing ( 60 ) which includes a gas chamber ( 61 );
  • d) within the gas chamber ( 61 ) a piston ( 62 ) with the piston rod ( 63 ) extending therefrom is arranged to be axially displaceable to a limited extent; and
  • e) the piston rod ( 63 ) extends from the piston ( 62 ) in the expulsion direction, while the diametrical axial direction is defined as the direction of insertion, characterized in that
  • f) in front of the piston ( 62 ), in the expulsion direction, a spring element ( 68 ) is net angeord;
  • g) the piston ( 62 ) in the starting position, in principle with a horizontal seat ( 3 ) and vertical backrest ( 2 ), rests on the spring element ( 68 ) in a zero position (z 0 ) and with weight concentration on the front area ( 30 ) of the Seat ( 3 ), as caused by a user bending forward, the distance between the two gas springs ( 6 ) including the axes of rotation (D3, D4) increases; whereby
  • h) the piston ( 62 ) acts against the spring element ( 68 ) and extends beyond the zero position (z 0 ), in the opposite direction to the insertion direction, namely further in the direction of expulsion, via a path (s 2 ) to an advanced end position ( 22 ) can move and the front area ( 30 ) of the seat ( 3 ) lowers against the action of the spring element ( 68 ) from the zero position (x 0 ) into a negative position (x 2 ) inclined to the floor; in which
  • i) the movement of the seat ( 3 ) is followed by a synchronous adjustment of the backrest ( 2 ) with a forward inclination and the chair thereby adjusts to the writing position.
2. Mechanik nach Anspruch 1, dadurch gekennzeichnet, dass
  • a) der Kolben (62) in der unarretierten Nullstellung (z0) am Federelement (68) ansteht und bei Gewichtskonzentration auf den hinteren Bereich (31) des Sitzes (3), wie beim Zurücklehnen eines Benutzers hervorgerufen, sich der Abstand zwischen den beiden die erste Gasfeder (6) einschliessenden Drehachsen (D3, D4) verringert; wodurch
  • b) der Kolben (62) sich, aus der Nullstellung (z0) heraus, in Einschubrichtung, nämlich entgegengesetzt der Austriebsrichtung, vom Federelement (68) entfernt und sich über einen Weg (s1), bis in eine eingeschobene Endlage (z1) bewegen kann und sich dabei der Frontbereich (30) des Sitzes (3) ge­ gen die Austriebstendenz der ersten Gasfeder (6) aus der Nullstellung (x0) in eine zum Boden aufgerichtete Stellung (x1) anhebt; und
  • c) der Bewegung des Sitzes (3) eine synchrone Verstellung der Rückenlehne (2) mit Neigung nach hinten folgt und der Stuhl sich dadurch in die Relaxpo­ sition verstellt.
2. Mechanics according to claim 1, characterized in that
  • a) the piston ( 62 ) is in the non-locked zero position (z 0 ) on the spring element ( 68 ) and at weight concentration on the rear area ( 31 ) of the seat ( 3 ), as caused when a user leans back, the distance between the two the first gas spring ( 6 ) including axes of rotation (D3, D4) is reduced; whereby
  • b) the piston ( 62 ), from the zero position (z 0 ), in the direction of insertion, namely opposite to the direction of expulsion, moves away from the spring element ( 68 ) and moves via a path (s 1 ) to an inserted end position (z 1 ) can move and the front area ( 30 ) of the seat ( 3 ) ge against the tendency of the first gas spring ( 6 ) to rise from the zero position (x 0 ) to a position raised to the ground (x 1 ); and
  • c) the movement of the seat ( 3 ) is followed by a synchronous adjustment of the backrest ( 2 ) with an inclination to the rear, thereby adjusting the chair to the relax position.
3. Mechanik nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass
  • a) die eine Drehachse (D3) sich unterhalb des Sitzes (3) befindet und verlager­ bar ist;
  • b) das Untergestell (4, 10) von einem Fuss (4) und einem Sitzträger (10) ge­ bildet wird;
  • c) zwischen dem Fuss (4) und dem Sitzträger (10) eine zumindest im Prinzip vertikal stehende Feder (5), vorzugsweise eine zweite Gasfeder, eingebaut sein kann, auf deren Kolbenstange (50) der Sitzträger (10) aufgesetzt ist; und
  • d) die andere Drehachse (D4) feststehend und am Sitzträger (10) angeordnet ist.
3. Mechanism according to claim 1 or 2, characterized in that
  • a) the one axis of rotation (D3) is located below the seat ( 3 ) and is relocatable;
  • b) the underframe ( 4 , 10 ) is formed by a foot ( 4 ) and a seat support ( 10 );
  • c) between the foot ( 4 ) and the seat support ( 10 ) an at least in principle vertical spring ( 5 ), preferably a second gas spring, can be installed, on the piston rod ( 50 ) of which the seat support ( 10 ) is placed; and
  • d) the other axis of rotation (D4) is fixed and arranged on the seat support ( 10 ).
4. Mechanik nach einem der Ansprüche 1 bis 3, dadurch gekenn­ zeichnet, dass
  • a) sich axial durch die Kolbenstange (63) der ersten Gasfeder (6) eine von aussen betätigbare Ventilstange (64) erstreckt, auf der ein Ventilkegel (67) angeordnet ist, zu dem sich im Kolben (62) ein komplementärer Ventilsitz (66) befindet; und
  • b) bei geschlossenem Ventilkegel (67) der Gasaustausch zwischen beiden Seiten des Kolbens (62) unterbunden ist.
4. Mechanism according to one of claims 1 to 3, characterized in that
  • a) extends axially through the piston rod ( 63 ) of the first gas spring ( 6 ) an externally actuable valve rod ( 64 ) on which a valve cone ( 67 ) is arranged, to which a complementary valve seat ( 66 ) is located in the piston ( 62 ) is; and
  • b) when the valve cone ( 67 ) is closed, the gas exchange between both sides of the piston ( 62 ) is prevented.
5. Mechanik nach einem der Ansprüche 1 bis 4, dadurch gekenn­ zeichnet, dass die Kolbenstange (63) durch einen axialen Durchlass (600) aus dem Gehäuse (60) der ersten Gasfeder (6) austritt und das Federelement (68) innerhalb des Gehäuses (60) und benachbart zum Durchlass (600) fixiert ist.5. Mechanism according to one of claims 1 to 4, characterized in that the piston rod ( 63 ) exits through an axial passage ( 600 ) from the housing ( 60 ) of the first gas spring ( 6 ) and the spring element ( 68 ) within the housing ( 60 ) and adjacent to the passage ( 600 ). 6. Mechanik nach einem der Ansprüche 1 bis 5, dadurch gekenn­ zeichnet, dass das Federelement (68) der ersten Gasfeder (6) aus Gummi oder Kunststoff besteht, oder eine Tellerfeder ist, oder als vorkomprimiertes Gas­ polster gestaltet ist.6. Mechanism according to one of claims 1 to 5, characterized in that the spring element ( 68 ) of the first gas spring ( 6 ) consists of rubber or plastic, or is a plate spring, or is designed as a pre-compressed gas cushion. 7. Mechanik nach Anspruch 6, dadurch gekennzeichnet, dass das Federelement (68) im Prinzip die Gestalt eines Rohrstücks aufweist, welches die aus dem Gehäuse (60) herausgeführte Kolbenstange (63) umgibt.7. Mechanics according to claim 6, characterized in that the spring element ( 68 ) has in principle the shape of a tube piece which surrounds the piston rod ( 63 ) led out of the housing ( 60 ). 8. Mechanik nach einem der Ansprüche 1 bis 7, dadurch gekenn­ zeichnet, dass
  • a) Laschen (14) einerseits am Sitzträger (10) in einer feststehenden Dreh­ achse (D6) und andererseits am Sitz (3) in einer verlagerbaren Drehachse (D5) angelenkt sind;
  • b) die unteren Ausläufer (21) der Rückenlehne (2) in einer feststehenden Drehachse (D1) am Sitzträger (10) angelenkt sind; und
  • c) zwischen dem hinteren Bereich (31) des Sitzes (3) und dem Sitzträger (10) eine Feder (11), vorzugsweise eine Schraubenfeder, angeordnet ist, die pa­ rallel zur ersten Gasfeder (6) wirkt.
8. Mechanism according to one of claims 1 to 7, characterized in that
  • a) tabs ( 14 ) are articulated on the one hand on the seat support ( 10 ) in a fixed axis of rotation (D6) and on the other hand on the seat ( 3 ) in a displaceable axis of rotation (D5);
  • b) the lower extensions ( 21 ) of the backrest ( 2 ) are articulated in a fixed axis of rotation (D1) on the seat support ( 10 ); and
  • c) a spring ( 11 ), preferably a helical spring, is arranged between the rear region ( 31 ) of the seat ( 3 ) and the seat support ( 10 ), which acts parallel to the first gas spring ( 6 ).
DE20306014U 2003-04-14 2003-04-14 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest Expired - Lifetime DE20306014U1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE20306014U DE20306014U1 (en) 2003-04-14 2003-04-14 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest
AT04405212T ATE333228T1 (en) 2003-04-14 2004-04-07 MECHANICS FOR A CHAIR WITH A GAS SPRING FOR SYNCHRONOUS CONTROL OF THE TILT OF THE SEAT AND BACKREST
ES04405212T ES2268606T3 (en) 2003-04-14 2004-04-07 MECHANISM FOR A CHAIR WITH A GAS SPRING FOR THE SYNCHRONOUS CONTROL OF THE INCLINATION OF THE SEAT AND BACKUP.
EP04405212A EP1468633B1 (en) 2003-04-14 2004-04-07 Gas-spring mechanism of a chair for synchronized tilting of the seat and the backrest
DE502004000970T DE502004000970D1 (en) 2003-04-14 2004-04-07 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and the backrest

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20306014U DE20306014U1 (en) 2003-04-14 2003-04-14 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest

Publications (1)

Publication Number Publication Date
DE20306014U1 true DE20306014U1 (en) 2003-06-26

Family

ID=7981507

Family Applications (2)

Application Number Title Priority Date Filing Date
DE20306014U Expired - Lifetime DE20306014U1 (en) 2003-04-14 2003-04-14 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and backrest
DE502004000970T Expired - Fee Related DE502004000970D1 (en) 2003-04-14 2004-04-07 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and the backrest

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE502004000970T Expired - Fee Related DE502004000970D1 (en) 2003-04-14 2004-04-07 Mechanism for a chair with a gas spring for synchronous control of the inclination of the seat and the backrest

Country Status (4)

Country Link
EP (1) EP1468633B1 (en)
AT (1) ATE333228T1 (en)
DE (2) DE20306014U1 (en)
ES (1) ES2268606T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007095A1 (en) * 2004-02-13 2005-08-25 Interstuhl Büromöbel GmbH & Co. KG Office chair is mounted on support with curved upper surface, pneumatic spring moving support to reclining position and pneumatic lines connecting spring to cylinders which move slides attached to back rest
DE202005011725U1 (en) * 2005-07-27 2006-12-07 Sander, Armin Chair, especially office chair
WO2007124609A2 (en) * 2006-04-27 2007-11-08 Vitra Patente Ag Mechanism for a chair
EP3508095A4 (en) * 2016-09-01 2020-01-01 UE Furniture Co., Ltd Chair structure and chair

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011099945A1 (en) 2010-02-09 2011-08-18 Insu Teknik Makina Sanayi Ve Ticaret Anonim Sirketi A pusher component providing additional force to oil and gas pressure in shock absorbers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837727A1 (en) * 1988-11-07 1990-05-10 Link Wilhelm Kg CHAIR, ESPECIALLY OFFICE CHAIR
JPH0520199Y2 (en) * 1988-11-30 1993-05-26
DE4135948C2 (en) * 1991-10-31 1993-12-23 Rolf Voelkle Chair, in particular office swivel chair
DE9315337U1 (en) * 1993-10-11 1994-02-03 Bitsch, Hans-Ullrich, Prof. Dipl.-Designer, 40545 Düsseldorf Seating furniture, in particular office swivel chair with inclination adjustment of the seat and backrest
DE19810768B4 (en) * 1998-03-06 2009-09-24 Drabert Gmbh office chair
DE10126000A1 (en) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Synchronous mechanism for the simultaneous swiveling of the seat and backrest of office chairs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007095A1 (en) * 2004-02-13 2005-08-25 Interstuhl Büromöbel GmbH & Co. KG Office chair is mounted on support with curved upper surface, pneumatic spring moving support to reclining position and pneumatic lines connecting spring to cylinders which move slides attached to back rest
DE202005011725U1 (en) * 2005-07-27 2006-12-07 Sander, Armin Chair, especially office chair
WO2007124609A2 (en) * 2006-04-27 2007-11-08 Vitra Patente Ag Mechanism for a chair
WO2007124609A3 (en) * 2006-04-27 2008-03-20 Vitra Patente Ag Mechanism for a chair
EP3508095A4 (en) * 2016-09-01 2020-01-01 UE Furniture Co., Ltd Chair structure and chair

Also Published As

Publication number Publication date
ATE333228T1 (en) 2006-08-15
EP1468633A1 (en) 2004-10-20
ES2268606T3 (en) 2007-03-16
EP1468633B1 (en) 2006-07-19
DE502004000970D1 (en) 2006-08-31

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