EP0949875B1 - Chair frame, control mechanism and upholstery - Google Patents
Chair frame, control mechanism and upholstery Download PDFInfo
- Publication number
- EP0949875B1 EP0949875B1 EP97941142A EP97941142A EP0949875B1 EP 0949875 B1 EP0949875 B1 EP 0949875B1 EP 97941142 A EP97941142 A EP 97941142A EP 97941142 A EP97941142 A EP 97941142A EP 0949875 B1 EP0949875 B1 EP 0949875B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- seat
- chair
- padded covering
- fastened
- 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
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000036544 posture Effects 0.000 description 3
- 210000001217 buttock Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C5/00—Chairs of special materials
- A47C5/04—Metal chairs, e.g. tubular
- A47C5/06—Special adaptation of seat upholstery or fabric for attachment to tubular 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs
Definitions
- the present invention relates to a chair, in particular an office swivel chair with a height-adjustable seat and adjustable backrest, which so articulated in the plane of the seat that one fixed area for the thigh support and a swiveling area for the buttocks. So that gets one runs across the width of the seat Swivel axis created by articulated connections on the frame.
- the upholstery of the seat extends from the front edge beyond the swivel axis.
- the whole The chair mechanism is located below the seat. Either the height as well as the inclination adjustment are by means of springs arranged in the frame, preferably gas springs.
- the principle of dividing the seat into a fixed one Thigh pad and a swiveling seat pad, which merges into the backrest is from CH-A-568 738 known.
- the subdivision is made with hinge links realized that arranged in the side parts of the support frame are.
- CH-A-582 498 discloses a chair of the relevant type. However, this construction is also limited on the swiveling of those connected to the buttocks Backrest, whereby proposed here in addition will cover the seat surface beyond the swivel axis to the rear of the frame. Although for the tilt adjustment uses a gas spring; something is missing but the possibility of height adjustment, an integrated, complete positioning mechanism as well as one of the. today's production requirements and aesthetic demands adequate frame construction and upholstery.
- the invention is therefore based on the object for one Chair with a swivel axis running across the seat, an improved frame structure as well as a combined one Actuating mechanism to create all modern functions enables.
- the basic structure of the chair mechanism should be as inexpensive, reliable, low-service as possible and be easy to use.
- the one to be proposed Actuating mechanism as a compact construction inconspicuous be integrated in the chair.
- the frame structure has particular value, i.e. rational and cost-effective Production and assembly in series production while fulfilling today's, more creative Aesthetic demands.
- the seat support of the chair frame is on the conical tip one in a known base and centric vertically arranged gas spring - this is for the height adjustment provided and will be called in the followingêtngasfeder - put on.
- the gas spring on the seat support is for the Tilt adjustment articulated - in the further tilt gas spring called - which, on the other hand, articulated on the back support is.
- the back support is on the seat support within the articulated to the seat surface extending pivot axis and takes the bow-shaped back tensioner. Below the seat support are the diametrically opposite control levers arranged for the height and tilt gas spring.
- the back tensioner and two strip-shaped seat tensioners are insertable into the upholstery cover, the first on Back straps and the last attached to the seat support become. Which extends from the seat over the cross bar of the Backrest up to the back tensioner upholstery cover has an overhang in the area of the crossbar, which is wrapped around the cross bar and fixed to it.
- the invention is now a relatively simple, compact and in the advantageous for attaching the cushion cover Setting mechanism integrating frame construction to disposal.
- the entire chair can be functional optimized construction and the achieved rational Assembly in large numbers at efficient manufacturing costs produce.
- the actuating mechanism ensures one long service life, allows uncomplicated service and offers the user all the benefits of modern seating, including ergonomic adjustment of the seat cover and backrest when changing the user's posture.
- the constructive features result in if possible low material costs one due to its simplicity aesthetically sophisticated chair.
- the chair is composed in principle of the star-shaped base frame 1, the seat support 2, the back support 3, the back tensioner 4, the actuating mechanism 5, the vertical gas spring 6, the tilt gas spring 7 and the cushion cover 8 .
- Extending from the base frame 1 is a centrally arranged, vertically rising center column 10 , in which the height gas spring 6 is inserted for the height adjustment.
- the seat support 2 is attached to the upper conical end of the extendable piston rod 60 of the vertical gas spring 6 .
- the seat support 2, the back support 3 and the back tensioner 4 are covered with the one-piece cushion cover 8 .
- the inclined gas spring 7 is articulated in the center of rotation in the axis of rotation D1 .
- the inclination gas spring 7 is articulated in the middle on the cross member 30 of the back support 3 , as a result of which the axis of rotation D2 is created here.
- Two vertical supports 31 and two practically right-angled horizontal arms 32 extend from the cross member 30 in ascending order, resulting in a one-piece back support 3 .
- the arms 32 are connected in hinge connections V to the seat support 2 , so that here the main axis of rotation D is formed, about which the back support 3 can be pivoted as a whole.
- the area between the main axis of rotation D and the cross member 30 represents the seat pad G.
- the bow-shaped back tensioner 4 is fastened to the supports 31 .
- the one-piece, massive seat support 2 consists essentially of an upwardly bent bracket part 20 , each with an outer right-angled and forward-facing support bar 21 , on which the arms 32 in the hinge connections V attach at the rear.
- An opening 200 is located in the center of the bottom of the bracket part 20 .
- the opposing shift levers 16, 17 for the vertical gas spring 6 and the tilt gas spring 7 are arranged.
- the opening 200 present at the bottom of the bracket part 20 has a round bore 201 and a groove 202 attached to it, so that a resemblance to a keyhole arises.
- the tilt gas spring 7 is articulated on the cross member 30 in a recess 300 .
- a helical spring 71 is additionally attached to the piston rod 70 of the tilt gas spring 7 .
- each vertical support 31 there is a mounting shoulder 310 facing the arms 32 and bores 311 .
- the bracket member 20 including the lever 16,17 are arranged for actuating the height gas spring 6 or the inclination spring 7 :.
- the head part of the vertical gas spring 6 with the valve rod 62 protruding from above sits in the conical bore 201 of the opening 200 of the bracket part 20 .
- the associated shift lever 16 has a nose 160 and is fixed in an axis of rotation D3.
- the nose 160 protrudes through the groove 202 of the opening 200 into its bore 201 and is located directly above the valve rod 62 . If the shift lever 16 is pulled up against the bracket part 20 , the nose 160 moves downward and presses on the valve rod 62 .
- the shift lever 17 for actuating the valve rod 72 protruding from the inclination gas spring 7 is mounted in a rotational axis D4 in the same way as the lever 16 .
- a deflection angle 73 which is rotatably inserted in the bracket part 20 and on which a pawl 730 is located is used.
- the one-piece upholstery cover 8 extends: from the seat support 2 , over its seat cover G to the cross member 30 and over the back tensioner 4 .
- the cushion cover 8 In the area of the support strips 21 , the cushion cover 8 each has a pocket 80 into which the seat clamps 22 are inserted. These linear or strip-shaped seat clamps 22 are then fastened to the support strips 21 , preferably screwed from below through the bores 211 , 220 .
- vertical supports 31 and arms 32 , 8 cutouts 81 are provided in the upholstery cover.
- the cushion cover 8 has a branch 82 , from which the cushion cover 8 extends further to the back tensioner 4 and where a strip-shaped overhang 83 is present.
- the branch 82 and the overhang 83 can be produced by sewing on a second piece of fabric.
- the cushion cover 8 has a pocket into which the loose back tensioner 4 can be inserted.
- the back tensioner 4 inserted in the cushion cover 8 is then attached to the vertical supports 31 , that is to say placed on the attachment shoulders 310 and fixed, preferably screwed from behind.
- the screw holes 311 and 40 in the vertical supports 31 and in the back tensioner 4 are used for this purpose .
- the strip-shaped attachment 83 - preferably made of the same material as the cushion cover 8 - has transverse loops 830 into which the clamping bolts 302 can be inserted. From the rear, the attachment 83 is knocked down around the cross member 30 , the clamping bolts 302 being seated in the grooves 301 and being fixed therein, for example by means of screws 303 .
- a lower transverse pocket can be provided in the front in the area of the seat, into which a strip-shaped, elastic seat tensioner 84 is inserted. It is advantageous to provide a continuous strengthening seam 85 in the upholstery cover 8 , for example in the course of the main axis of rotation D , which divides the seat cover G from the rest of the seat surface.
- the desired height of the chair can take place only when the shift lever 16 is depressed and thus the stroke length of the vertical pneumatic spring 6 is variable. Usually, when the operating lever 16 is pressed and the seat support 2 is relieved, it is raised to the maximum height. If the seat support 2 is loaded and the shift lever 16 is pressed, the seat support 2 is lowered to the lowest position.
- the current position is locked, ie the tilt gas spring 7 is blocked.
- the switching lever 17 is actuated, the locking of the inclination gas spring 7 is released and the user can shift the entire weight between the forward-inclined writing position (according to FIG. 4B), the middle basic position (according to FIG. 4A) and the backward-inclined position Take the relaxing position (according to Fig. 4C) on the chair.
- the shift lever 17 is operated again, the current position is locked again.
- tilt gas spring 7 If the tilt gas spring 7 is in the free switching state and the user exerts sufficient pressure against the back part, a movement takes place in the main axis of rotation D and the secondary axes of rotation D1 and D2 .
- the tilt gas spring 7 and the coil spring 71 change their stroke lengths. With the back support 3 , which adjusts in inclination, there is an adequate change in the seat cover.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Exchange Systems With Centralized Control (AREA)
- Special Chairs (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich auf einen Stuhl, insbesondere einen Bürodrehstuhl, mit höhenverstellbarer Sitzfläche und in der Neigung verstellbarer Rückenlehne, welche so in der Ebene der Sitzfläche angelenkt ist, dass sich ein feststehender Bereich für die Oberschenkelauflage und ein schwenkbarer Bereich für die Gesässauflage ergibt. Damit erhält man eine über die Breite der Sitzfläche verlaufende Schwenkachse, die durch Gelenkverbindungen am Rahmen entsteht. Der Polsterbezug der Sitzfläche erstreckt sich von der Vorderkante über die Schwenkachse hinaus. Die gesamte Stuhlmechanik ist unterhalb der Sitzes angeordnet. Sowohl die Höhen- als auch die Neigungsverstellung werden mittels im Rahmen angeordneter Federn, vorzugsweise Gasfedern, realisiert. Um den Bewegungsablauf der Neigung zu optimieren und um zur Gasfeder überlagernd eine Vorspannung einzustellen, ist es Praxis, eine zusätzliche Schraubendruckfeder vorzusehen. Die Betätigung der Gasfedern erfolgt über unter der Sitzfläche positionierter Stellhebel, zu denen der Benutzer im Sitzen Zugriff hat.The present invention relates to a chair, in particular an office swivel chair with a height-adjustable seat and adjustable backrest, which so articulated in the plane of the seat that one fixed area for the thigh support and a swiveling area for the buttocks. So that gets one runs across the width of the seat Swivel axis created by articulated connections on the frame. The upholstery of the seat extends from the front edge beyond the swivel axis. The whole The chair mechanism is located below the seat. Either the height as well as the inclination adjustment are by means of springs arranged in the frame, preferably gas springs. To optimize the movement of the incline and in order to set a preload superimposed on the gas spring, it is practice to use an additional helical compression spring to provide. The gas springs are actuated via under position of the seat lever, to which the user has access while sitting.
Je nach vorheriger Schaltstellung der für die Neigung eingesetzten Feder wird mit deren Betätigung die momentane Position der quasi bis zur Schwenkachse in der Sitzfläche verlängerten Rückenlehne arretiert oder die Arretierung aufgehoben. Ist die Arretierung der Neigungsverstellung gelöst, kann man innerhalb eines Stellbereichs durch Verlagerung seines Körpergewichts die Position der Rückenlehne verändern, wobei die Gesässauflage der Verstellung folgt. Derart ausgerüstete Stühle erlauben Sitzhaltungen von einer nach vorn geneigten Stellung (Schreibposition), über eine Mittelstellung (Grundposition), bis hin zu einer nach hinten geneigten Stellung (Relaxposition). Stühle diesen Typs bieten dem Benutzer einen erhöhten Komfort, da sich die Rückenlehne und die Gesässauflage der jeweils eingenommenen Sitzhaltung ergonomisch vorteilhaft anpasst.Depending on the previous switch position of the spring used for the inclination, its actuation locks the current position of the backrest, which is quasi extended up to the swivel axis in the seat, or releases the lock. If the locking of the inclination adjustment is released, the position of the backrest can be changed within an adjustment range by shifting your body weight, whereby the seat cover follows the adjustment. Chairs equipped in this way allow sitting postures from a forward inclined position ( writing position), through a middle position ( basic position ), to a backward inclined position ( relax position). Chairs of this type offer the user increased comfort because the backrest and the seat cover adapt ergonomically to the seated posture.
Das Prinzip der Unterteilung der Sitzfläche in eine feststehende Oberschenkelauflage und eine schwenkbare Gesässauflage, welche in die Rückenlehne übergeht, ist aus der CH-A-568 738 bekannt. Die Unterteilung wird mit Scharniergliedern realisiert, die in den Seitenteilen des Tragrahmens angeordnet sind.The principle of dividing the seat into a fixed one Thigh pad and a swiveling seat pad, which merges into the backrest is from CH-A-568 738 known. The subdivision is made with hinge links realized that arranged in the side parts of the support frame are.
In der CH-A-582 498 wird ein Stuhl des relevanten Typs offenbart. Allerdings beschränkt sich diese Konstruktion ebenfalls auf die Schwenkbarkeit der mit der Gesässauflage verbundenen Rückenlehne, wobei hier ergänzend vorgeschlagen wird, den Bezug der Sitzfläche über die Schwenkachse hinaus bis an das Hinterteil des Rahmens zu führen. Zwar wird für die Neigungsverstellung eine Gasfeder eingesetzt; es fehlt aber die Möglichkeit der Höheneinstellung, eine integrierte, komplette Stellmechanik sowie eine der. heutigen Produktions-erfordernissen und ästhetischen Ansprüchen adäquate Rahmenkonstruktion und Polsterbespannung. CH-A-582 498 discloses a chair of the relevant type. However, this construction is also limited on the swiveling of those connected to the buttocks Backrest, whereby proposed here in addition will cover the seat surface beyond the swivel axis to the rear of the frame. Although for the tilt adjustment uses a gas spring; something is missing but the possibility of height adjustment, an integrated, complete positioning mechanism as well as one of the. today's production requirements and aesthetic demands adequate frame construction and upholstery.
Der Erfindung liegt somit die Aufgabe zugrunde, für einen Stuhl mit einer über die Sitzfläche verlaufenden Schwenkachse, einen verbesserten Rahmenaufbau sowie eine kombinierte Stellmechanik zu schaffen, die alle modernen Funktionen ermöglicht. Die Stuhlmechanik soll in ihrem Grundaufbau möglichst unaufwendig, funktionssicher, servicearm und bequem in der Bedienung sein. Ferner soll die vorzuschlagende Stellmechanik als kompakte Konstruktion unscheinbar im Stuhl integriert sein. Bei der Entwicklung gebührt dem Polsterbezug im funktionalen Zusammenspiel mit dem Rahmenaufbau besonderer Wert, d.h. rationelle und kosteneffiziente Herstellung und Montage in der Serienproduktion bei gleichzeitiger Erfüllung heutiger, kreativer Ästhetikansprüche.The invention is therefore based on the object for one Chair with a swivel axis running across the seat, an improved frame structure as well as a combined one Actuating mechanism to create all modern functions enables. The basic structure of the chair mechanism should be as inexpensive, reliable, low-service as possible and be easy to use. Furthermore, the one to be proposed Actuating mechanism as a compact construction inconspicuous be integrated in the chair. When developing due to the functional upholstery of the upholstery the frame structure has particular value, i.e. rational and cost-effective Production and assembly in series production while fulfilling today's, more creative Aesthetic demands.
Der Sitzträger des Stuhlrahmens ist auf die konische Spitze einer in einem an sich bekannten Untergestell zentrisch und vertikal angeordneten Gasfeder - diese ist für die Höheneinstellung vorgesehen und wird im weiteren Höhengasfeder genannt - aufgesetzt. Am Sitzträger ist die Gasfeder für die Neigungsverstellung angelenkt - im weiteren Neigungsgasfeder genannt -, welche andererseits am Rückenträgers angelenkt ist. Der Rückenträger ist am Sitzträger innerhalb der über der Sitzfläche verlaufenden Schwenkachse angelenkt und nimmt den bügelförmigen Rückenspanner auf. Unterhalb des Sitzträgers sind die diametral gegenüberliegenden Bedienungshebel für die Höhen- und Neigungsgasfeder angeordnet. The seat support of the chair frame is on the conical tip one in a known base and centric vertically arranged gas spring - this is for the height adjustment provided and will be called in the following Höhengasfeder - put on. The gas spring on the seat support is for the Tilt adjustment articulated - in the further tilt gas spring called - which, on the other hand, articulated on the back support is. The back support is on the seat support within the articulated to the seat surface extending pivot axis and takes the bow-shaped back tensioner. Below the seat support are the diametrically opposite control levers arranged for the height and tilt gas spring.
Der Rückenspanner und zwei leistenförmige Sitzspanner sind in den Polsterbezug einschiebbar, wobei der erste am Rückenträger und die letzten auf dem Sitzträger befestigt werden. Der sich von der Sitzfläche über den Querholm des Rückenträgers bis zum Rückenspanner erstreckende Polsterbezug hat im Bereich des Querholms einen Überhang, welcher um den Querholm geschlungen und daran fixiert ist.The back tensioner and two strip-shaped seat tensioners are insertable into the upholstery cover, the first on Back straps and the last attached to the seat support become. Which extends from the seat over the cross bar of the Backrest up to the back tensioner upholstery cover has an overhang in the area of the crossbar, which is wrapped around the cross bar and fixed to it.
Dank der Erfindung steht nun eine relativ einfache, kompakte und sich in die für das Anbringen des Polsterbezugs vorteilhafte Rahmenkonstruktion integrierende Stellmechanik zur Verfügung. Der gesamte Stuhl lässt sich durch die funktional optimierte Konstruktion und die erzielte rationelle Montage in grossen Stückzahlen zu effizienten Fabrikations-kosten herstellen. Die Stellmechanik gewährleistet eine lange Standzeit, erlaubt einen unaufwendigen Service und bietet dem Benutzer alle Vorzüge moderner Sitzmöbel, einschliesslich einer ergonomischen Anpassung der Gesässauflage und Rückenlehne bei Änderung der Sitzhaltung des Benutzers. Die konstruktiven Merkmale ergeben bei möglichst geringem Materialaufwand einen durch seine Schlichtheit ästhetisch anspruchsvollen Stuhl.Thanks to the invention is now a relatively simple, compact and in the advantageous for attaching the cushion cover Setting mechanism integrating frame construction to disposal. The entire chair can be functional optimized construction and the achieved rational Assembly in large numbers at efficient manufacturing costs produce. The actuating mechanism ensures one long service life, allows uncomplicated service and offers the user all the benefits of modern seating, including ergonomic adjustment of the seat cover and backrest when changing the user's posture. The constructive features result in if possible low material costs one due to its simplicity aesthetically sophisticated chair.
Anhand der beiliegenden Zeichnungen erfolgt nachstehend die detaillierte Beschreibung von Ausführungsbeispielen zur erfindungsgemässen Rahmenkonstruktion, der Stellmechanik und zum Polsterbezug. Es zeigen:
- Figur 1A:
- den gesamten Stuhl in der Perspektivansicht;
- Figur 1B:
- den Stuhl gemäss Figur 1A in der Seitenansicht;
- Figur 2A:
- die Rahmenkonstruktion des Stuhls ohne Polsterbezug;
- Figur 2B:
- die Rahmenkonstruktion ohne Untergestell als Explosivdarstellung;
- Figur 2C:
- den Sitzträger mit dem angelenkten Rückenträger und der Neigungsgasfeder in der Perspektivansicht;
- Figur 2D:
- den im Sitzträger angeordneten Schalthebel für die Höhengasfeder im Teilschnitt;
- Figur 2E:
- den im Sitzträger angeordneten Schalthebel für die Neigungsgasfeder;
- Figur 2F:
- den Schalthebel gemäss Figur 2E im Sitzträger als Schnittdarstellung;
- Figur 3A:
- die Rahmenkonstruktion mit angebrachtem Polsterbezug als Teilschnitt;
- Figur 3B:
- den Polsterbezug im Bereich des Sitzträgers als Teilschnitt;
- Figur 3C:
- die Befestigung des Polsterbezugs am Querholm des Rückenträgers im Schnitt als Schnittdarstellung;
- Figur 4A:
- eine Prinzipdarstellung des Stuhls in der Grundposition (Gesässauflage waagerecht, Rückenlehne senkrecht) ;
- Figur 4B:
- eine Prinzipdarstellung des Stuhls in der Schreibposition (Gesässauflage und Rückenlehne nach vorn geneigt); und
- Figur 4C:
- eine Prinzipdarstellung des Stuhls in der Relaxposition (Gesässauflage und Rückenlehne nach hinten geneigt).
- Figure 1A:
- the entire chair in perspective view;
- Figure 1B:
- the chair according to Figure 1A in side view;
- Figure 2A:
- the frame construction of the chair without upholstery;
- Figure 2B:
- the frame construction without base as an exploded view;
- Figure 2C:
- the seat support with the articulated back support and the tilt gas spring in perspective view;
- Figure 2D:
- the shift lever arranged in the seat support for the vertical gas spring in partial section;
- Figure 2E:
- the shift lever in the seat support for the tilt gas spring;
- Figure 2F:
- the shift lever according to Figure 2E in the seat carrier as a sectional view;
- Figure 3A:
- the frame construction with attached upholstery cover as a partial cut;
- Figure 3B:
- the upholstery in the area of the seat support as a partial cut;
- Figure 3C:
- the attachment of the upholstery cover on the cross member of the back support in section as a sectional view;
- Figure 4A:
- a schematic representation of the chair in the basic position (seat cover horizontal, backrest vertical);
- Figure 4B:
- a schematic representation of the chair in the writing position (seat cover and backrest tilted forward); and
- Figure 4C:
- a schematic representation of the chair in the relax position (seat and backrest tilted back).
Der Stuhl setzt sich im Prinzip aus dem sternförmigen Untergestell
1, dem Sitzträger 2, dem Rückenträger 3, dem Rückenspanner
4, der Stellmechanik 5, der Höhengasfeder 6, der
Neigungsgasfeder 7 und dem Polsterbezug 8 zusammen. Vom
Untergestell 1 erstreckt sich eine zentrisch angeordnete,
vertikal aufsteigende Mittelsäule 10, in welcher die Höhengasfeder
6 für die Höheneinstellung steckt. Auf das obere
konische Ende der ausfahrbaren Kolbenstange 60 der Höhengasfeder
6 ist der Sitzträger 2 aufgesteckt. Der Sitzträger
2, der Rückenträger 3 und der Rückenspanner 4 sind mit dem
einstückigen Polsterbezug 8 überzogen.The chair is composed in principle of the star-shaped
An der Hinterseite des Sitzträgers 2 ist mittig die schräg
aufsteigend angeordnete Neigungsgasfeder 7 in der Drehachse
D1 angelenkt. Andererseits ist die Neigungsgasfeder 7 mittig
am Querholm 30 des Rückenträgers 3 angelenkt, wodurch hier
die Drehachse D2 entsteht. Aussen vom Querholm 30 erstrecken
sich aufsteigend zwei Vertikalstützen 31 und zwei praktisch
rechtwinklig abgehende horizontale Arme 32, wodurch sich ein
einteiliger Rückenträger 3 ergibt. Zuvorderst sind die Arme
32 in Scharnierverbindungen V mit dem Sitzträger 2 verbunden,
so dass hier die Hauptdrehachse D gebildet wird, um die
der Rückenträger 3 als Ganzes schwenkbar ist. Der Bereich
zwischen der Hauptdrehachse D und dem Querholm 30 stellt die
Gesässauflage G dar. Der bügelförmige Rückenspanner 4 ist an
den Stützen 31 befestigt.At the rear of the
Der einteilige, massive Sitzträger 2 besteht im wesentlichen
aus einem nach oben offen gebogenen Bügelteil 20 mit
jeweils einer aussen rechtwinklig ansetzenden und nach vorn
weisenden Auflageleiste 21, an denen hinten die Arme 32 in
den Scharnierverbindungen V ansetzen. Mittig am Boden des
Bügelteils 20 befindet sich ein Durchbruch 200. Unterhalb
des Bügelteils 20 und partiell in dieses eingebettet, sind
die sich gegenüberliegenden Schalthebel 16,17 für die Höhengasfeder
6 und die Neigungsgasfeder 7 angeordnet.The one-piece,
Für die gesamte weitere Beschreibung gilt folgende Festlegung. Sind in einer Figur zum Zweck zeichnerischer Eindeutigkeit Bezugsziffern enthalten, aber im unmittelbar zugehörigen Beschreibungstext nicht erläutert, so wird auf deren Erwähnung in vorangehenden Figurenbeschreibungen Bezug genommen. Im Interesse der Übersichtlichkeit wird auf die wiederholte Bezeichnung von Bauteilen in nachfolgenden Figuren zumeist verzichtet, sofern zeichnerisch eindeutig erkennbar ist, dass es sich um "wiederkehrende" Bauteile handelt.The following definition applies to the entire further description. Are in a figure for the sake of graphic clarity Reference numbers included, but in the immediately associated Descriptive text not explained, so is on their Mention in previous figure descriptions reference taken. In the interest of clarity, the repeated designation of components in subsequent figures mostly dispensed with, provided that it is clearly recognizable in the drawing is that they are "recurring" components.
In den Auflageleisten 21 befinden sich paarweise Schraubenlöcher
210,211, um daran die linealförmigen Sitzspanner 22
und gegebenenfalls die anzubringenden Armlehnen 9 zu befestigen.
An den Sitzspannern 22 sind deshalb Schraubenlöcher
220 vorhanden, die mit den Schraubenlöchern 211 in den Auflageleisten
korrespondieren, vorhanden. Der am Boden des
Bügelteils 20 vorhandene Durchbruch 200 hat eine runde Bohrung
201 und eine daran ansetzende Nut 202, so dass Ähnlichkeit
zu einem Schlüsselloch entsteht. Die Neigungsgasfeder 7
ist am Querholm 30 in einer Versenkung 300 angelenkt. Auf
der Kolbenstange 70 der Neigungsgasfeder 7 ist zur Beeinflussung
der Federcharakteristik zusätzlich eine Schraubenfeder
71 aufgesteckt. Beiderseits der Versenkung 300 erstreckt
sich eine auf dem Querholm 30 längslaufende Nut 301
zur Aufnahme der für die Befestigung des Polsterbezugs 8
verwendeten Spannbolzen 302. In jeder Vertikalstütze 31 sind
eine zu den Armen 32 hingewandte Aufsetzschulter 310 sowie
Bohrungen 311 vorhanden.There are
Entsprechend dem Verlauf des Bügelteils 20 sind darunter
die Schalthebel 16,17 zur Betätigung der Höhengasfeder 6
bzw. der Neigungsgasfeder 7 angeordnet:. Die Kopfpartie der
Höhengasfeder 6 mit der oben herausragenden Ventilstange 62
sitzt in der konischen Bohrung 201 des Durchbruchs 200 des
Bügelteils 20. Der zugehörige Schalthebel 16 besitzt eine
Nase 160 und ist in einer Drehachse D3 fixiert. Die Nase
160 ragt durch die Nut 202 des Durchbruchs 200 in dessen
Bohrung 201 hinein und befindet sich unmittelbar über der
Ventilstange 62. Wird der Schalthebel 16 aufwärts gegen das
Bügelteil 20 gezogen, so bewegt sich die Nase 160 abwärts
und drückt auf die Ventilstange 62.According to the shape of the
Der Schalthebel 17 zur Betätigung der aus der Neigungsgasfeder
7 herausragenden Ventilstange 72 ist analog zum Hebel
16 in einer Drehachse D4 angebracht. Zur Bewegungsübertragung
vom Schalthebel 17 auf die rechtwinklig zum Schalthebel
17 stehende Ventilstange 72 wird ein im Bügelteil 20
drehbar eingesetzter Umlenkwinkel 73 eingesetzt, an dem
sich eine Klinke 730 befindet. Bei Betätigung des Schalthebels
17 senkt sich dessen Nase 170 und drückt auf den Umlenkwinkel
73, welcher eine Drehbewegung macht und dessen
Klinke 730 dann auf die Ventilstange 72 drückt. The
Der einteilige Polsterbezug 8 erstreckt: sich vom Sitzträger
2, über dessen Gesässauflage G hin zum Querholm 30 und über
den Rückenspanner 4. Im Bereich der Auflageleisten 21 besitzt
der Polsterbezug 8 je eine Tasche 80, in welche die
Sitzspanner 22 eingeschoben sind. Diese lineal- oder leistenförmigen
Sitzspanner 22 werden dann auf den Auflageleisten
21 befestigt, vorzugsweise von unten durch die Bohrungen
211,220 verschraubt. Im Bereich der Scharnierverbindungen
V und der Kreuzungspunkte von Querholm 30, Vertikalstützen
31 und Armen 32 sind im Polsterbezug 8 Aussparungen 81
vorgesehen. In Höhe des Querholms 30 weist der Polsterbezug
8 eine Verzweigung 82 auf, von welcher sich der Polsterbezug
8 weiter zum Rückenspanner 4 erstreckt und wo ein streifenförmiger
Überhang 83 vorhanden ist. Die Verzweigung 82 und
den Überhang 83 kann man durch Annähen eines zweiten Stoffteils
herstellen.The one-
Auch im Bereich des Rückenspanners 4 hat der Polsterbezug 8
eine Tasche, in die der lose Rückenspanner 4 eingeschoben
werden kann. Der so im Polsterbezug 8 steckende Rückenspanner
4 wird dann an den Vertikalstützen 31 befestigt, d.h.
auf die Aufsetzschultern 310 aufgesetzt und fixiert, vorzugsweise
von hinten verschraubt. Hierzu dienen die Schraubenlöcher
311 bzw. 40 in den Vertikalstützen 31 und im
Rückenspanner 4. Also in the area of the
Der streifenförmige Anhang 83 - vorzugsweise aus dem selben
Material wie der Polsterbezug 8 - besitzt querverlaufende
Schlaufen 830, in welche die Spannbolzen 302 einschiebbar
sind. Von hinten ist der Anhang 83 nach unten um den Querholm
30 geschlagen, wobei die Spannbolzen 302 in den Nuten
301 sitzen und darin fixiert sind, z.B. mittels Schrauben
303. Zur Stabilisierung des Polsterbezugs 8 kann vorn im
Bereich der Sitzfläche eine untere Quertasche vorgesehen
sein, in die ein leistenförmiger, elastischer Sitzspanner 84
eingesetzt ist. Es ist von Vorteil, etwa im Verlauf der
Hauptdrehachse D im Polsterbezug 8 eine durchgehende Verfestigungsnaht
85 anzubringen, die die Gesässauflage G von der
übrigen Sitzfläche abteilt.The strip-shaped attachment 83 - preferably made of the same material as the cushion cover 8 - has transverse loops 830 into which the clamping
Diese Figurenfolge veranschaulicht die unterschiedlichen Positionen, welche der Benutzer auf einem Stuhl einnehmen kann, der die erfindungsgemässen Merkmale aufweist.This sequence of figures illustrates the different Positions that the user occupies on a chair can, which has the features of the invention.
Die Einstellung der gewünschten Stuhlhöhe kann nur erfolgen,
wenn der Schalthebel 16 gedrückt wird und somit die Hublänge
der Höhengasfeder 6 veränderbar ist. Üblicherweise wird beim
Drücken des Betätigungshebels 16 und entlastetem Sitzträger
2 diese bis zur Maximalhöhe angehoben. Ist der Sitzträger 2
belastet und der Schalthebel 16 gedrückt, so wird der Sitzträger
2 bis zur tiefsten Stellung heruntergefahren.The desired height of the chair can take place only when the
Bei der Neigungseinstellung der Gesässauflage und dem aus dem
Rückenträger 3, dem Rückenspanner 4 und dem Polsterbezug 8
gebildeten Rückenteil hat man die Wahl zwischen zwei Schaltzuständen.
Im ersten Schaltzustand ist die momentane Position
arretiert, d.h. die Neigungsgasfeder 7 ist blockiert. Bei Betätigung
des Schalthebels 17 wird die Blockierung der Neigungsgasfeder
7 aufgehoben und der Benutzer kann durch Körpergewichtsverlagerung
den gesamten Bereich zwischen der nach
vorn geneigten Schreibposition (gemäss Fig. 4B), über die
mittlere Grundposition (gemäss Fig. 4A) bis hin zur nach
hinten geneigten Relaxposition (gemäss Fig. 4C) auf dem Stuhl
einnehmen. Bei erneuter Bedienung des Schalthebels 17 wird
die aktuelle Position wieder arretiert.When adjusting the inclination of the seat cover and the back part formed from the
Ist die Neigungsgasfeder 7 im freien Schaltzustand, und der
Benutzer übt einen ausreichenden Druck gegen das Rückenteil
aus, so findet eine Bewegung in der Hauptdrehachse D und den
Nebendrehachsen D1 und D2 statt. Die Neigungsgasfeder 7 und
die Schraubenfeder 71 verändern ihre Hublängen. Mit dem sich
in der Neigung verstellenden Rückenträger 3 folgt eine
adäquate Veränderung der Gesässauflage.If the
Claims (10)
- A chair having:a) a pivotable back part (3,4), of which the axis of rotation (D) defines a rear region on the seat surface with posterior support (G), in that a section (32) of the frame of the back part (3,4) continues as far as the axis of rotation (D) and is articulated there on a seat support (2) in a hinge connection (V); andb) a padded covering (8) which is fastened on the seat support (2) and extends from the seat surface, beyond the axis of rotation (D), as far as the frame part (30) behind the posterior support (G), characterised in thatc) the pivotable back part comprises a rear support (3), which is articulated in the hinge connection (V), and a bracket-like rear tensioner (4) which is to be fastened over said rear support (3) and can be pushed into the back part of the padded covering (8); andd) the single-piece padded covering (8) spans the seat surface and the back part (3,4), wherease) the rear support (3) has a crossmember (30) on which the padded covering (8) is fastened and passes from there to the back part (3,4).
- The chair as claimed in claim 1, characterised in thata) on both sides the seat support (2) has two support strips (21) which are provided in extension of the arms (32), articulated thereon, of the rear support (3); andb) the padded covering (8) is fastened on said support strips (21).
- The chair as claimed in claim 1 or 2, characterised in that,a) on the rear side of the seat support (2), in the center, an upwardly oriented pneumatic spring (7) is articulated in an axis of rotation (D1), said spring (7) extending to the crossmember (30) and being articulated there likewise in an axis of rotation (D2); andb) partially embedded in the bracket part (20), beneath the seat support (2), which is open in arc form in the upward direction, are two diametrically opposite changeover levers (16,17) for the purpose of actuating the springs (6,7) provided for the height adjustment and for the pivoting movement, whereasc) provided right at the front of one changeover lever (16) is a nose (160) which acts directly on the valve stem (62) of the spring (6), while provided on the other changeover lever (17) is a nose (170) which acts on a deflecting angle (73), which bears a fixed catch (730) which pushes on the valve stem (72) of the other spring (7).
- The chair as claimed in claim 3, characterised in that provided in the bracket part (20) is a bore (201) which is located in the center of the base and in which the top part of the height-adjustment pneumatic spring (6) is inserted, the nose (160) projecting into the bore (201) by way of a peripheral groove (202) on the bore (201).
- The chair as claimed in claim 2, characterised in that provided in the padded covering (8), in the region of the support strips (21), are pockets into which the strip-like seat tensioners (22) are pushed, the seat tensioners (22) being fastened on the top of the support strips (21).
- The chair as claimed in claim 1 or 2, characterised in that, in the vicinity of the crossmember (30), the padded covering (8) has a branch arrangement (82) from which the padded covering (8) extends further to the back part (3,4) and there projects a strip-like extension (83) which is intended for folding over around the crossmember (30) and for fastening thereon.
- The chair as claimed in claim 6, characterised in that provided on the edge of the extension (83) are loops into which there are inserted tensioning bolts (302), which are fastened on the crossmember (30).
- The chair as claimed in claim 6 or 7, characterised in that provided on the crossmember (30) is a longitudinally running groove (301) for the purpose of receiving the tensioning bolts (302).
- The chair as claimed in claim 1, characterised in that the rear tensioner (4), inserted in the padded covering (8), can be screwed onto vertical supports (31) of the rear support (3).
- The chair as claimed in claim 1, characterised in thata) in the region of the front edge of the seat surface, the padded covering (8) contains a transversely running elastic seat tensioner (84); andb) provided in the padded covering (8), at least in the vicinity of the axis of rotation (D), along the latter, is a strengthening seam (85) which passes through all the layers of the padded covering (8).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH250796 | 1996-10-14 | ||
CH250796 | 1996-10-14 | ||
PCT/IB1997/001202 WO1998016140A1 (en) | 1996-10-14 | 1997-10-03 | Chair frame, control mechanism and upholstery |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0949875A1 EP0949875A1 (en) | 1999-10-20 |
EP0949875B1 true EP0949875B1 (en) | 2001-11-21 |
Family
ID=4235354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97941142A Expired - Lifetime EP0949875B1 (en) | 1996-10-14 | 1997-10-03 | Chair frame, control mechanism and upholstery |
Country Status (7)
Country | Link |
---|---|
US (1) | US6149236A (en) |
EP (1) | EP0949875B1 (en) |
JP (1) | JP3278170B2 (en) |
AT (1) | ATE209011T1 (en) |
AU (1) | AU4315397A (en) |
DE (1) | DE59706076D1 (en) |
WO (1) | WO1998016140A1 (en) |
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USD703988S1 (en) | 2013-06-07 | 2014-05-06 | Steelcase Inc. | Chair |
USD703987S1 (en) | 2013-06-07 | 2014-05-06 | Steelcase Inc. | Chair |
USD704487S1 (en) | 2013-06-07 | 2014-05-13 | Steelcase Inc. | Chair |
USD706547S1 (en) | 2013-06-07 | 2014-06-10 | Steelcase Inc. | Chair |
USD707976S1 (en) | 2013-06-07 | 2014-07-01 | Steelcase Inc. | Chair |
USD721529S1 (en) | 2013-06-07 | 2015-01-27 | Steelcase Inc. | Handle apparatus |
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JP4674952B2 (en) * | 2000-10-16 | 2011-04-20 | コクヨ株式会社 | Chair |
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US7048335B2 (en) * | 2003-06-05 | 2006-05-23 | Steelcase Development Corporation | Seating unit with crossbar seat support |
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MX2009003765A (en) * | 2006-10-04 | 2009-05-08 | Formway Forniture Ltd | A chair. |
US7708346B2 (en) * | 2006-10-13 | 2010-05-04 | L&P Property Management Company | Reclining back mechanism for a seating unit |
US20080252124A1 (en) * | 2007-04-13 | 2008-10-16 | Chen Yung-Hua | Apparatus for adjusting the angle of a seat back of an office chair |
US7604298B2 (en) | 2007-06-01 | 2009-10-20 | Steelcase Development Corporation | Chair back attachment and method of assembly |
CA2720692C (en) | 2008-04-08 | 2016-10-04 | Formway Furniture Limited | Injection moulding method |
DE102009022994B4 (en) * | 2008-05-28 | 2020-02-27 | Suspa Gmbh | Backrest adjustment device |
US20100141002A1 (en) * | 2008-06-04 | 2010-06-10 | Kurrasch Andrew J | Biasing mechanism |
JP4379538B1 (en) | 2008-10-07 | 2009-12-09 | 沖電気工業株式会社 | Link mechanism for chair, chair |
US20100176636A1 (en) * | 2009-01-09 | 2010-07-15 | Chun-Chang Tai | Buffering device for chair |
US8113586B2 (en) * | 2009-01-23 | 2012-02-14 | Chen Yung-Hua | Apparatus for adjusting the seat back angle |
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USD705561S1 (en) | 2013-05-16 | 2014-05-27 | Steelcase Inc. | Chair |
USD708466S1 (en) | 2013-05-16 | 2014-07-08 | Steelcase Inc. | Chair |
USD704945S1 (en) | 2013-05-16 | 2014-05-20 | Steelcase Inc. | Chair |
USD764849S1 (en) | 2015-04-21 | 2016-08-30 | Pro-Cord S.P.A. | Chair |
USD760525S1 (en) | 2015-04-21 | 2016-07-05 | Pro-Cord S.P.A. | Chair |
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USD824710S1 (en) * | 2016-06-10 | 2018-08-07 | Bock 1 Gmbh & Co. Kg | Office chair |
CN206822374U (en) * | 2017-01-19 | 2018-01-02 | 欧亚平 | A kind of backrest can be close to the chair of human waist and back movement |
CN108056613B (en) * | 2017-01-19 | 2021-04-23 | 安吉县盛信办公家具有限公司 | Waist support seat |
US20200352337A1 (en) * | 2018-01-09 | 2020-11-12 | Superseating Bvba | Seating assembly for improved seating, ergonomic chairs or wheelchairs |
DE102020110707A1 (en) | 2020-04-20 | 2021-10-21 | Bock 1 Gmbh & Co. Kg | Seating |
US11284722B1 (en) * | 2021-05-24 | 2022-03-29 | Alexander Chan | Folding chair |
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CH568738A5 (en) * | 1973-08-20 | 1975-11-14 | Fehlbaum Fa | |
CH582498A5 (en) * | 1974-09-06 | 1976-12-15 | Fehlbaum Fa | |
US4408800A (en) * | 1980-06-11 | 1983-10-11 | American Seating Company | Office chairs |
NL8103037A (en) * | 1981-06-23 | 1983-01-17 | Gispen & Staalmeubel Bv | CHAIR. |
DE8316576U1 (en) * | 1983-06-07 | 1983-11-10 | Röder GmbH Sitzmöbelwerke, 6000 Frankfurt | SEAT FURNITURE |
DE3335463A1 (en) * | 1983-09-30 | 1985-04-11 | Fritz Bauer + Söhne oHG, 8503 Altdorf | CARRYING DEVICE FOR SEAT FURNITURE WITH ADJUSTABLE BACKREST SUPPORT AND ADJUSTABLE SEAT |
DE3835003A1 (en) * | 1988-10-14 | 1990-04-19 | Guenther Kuhn | ARMCHAIR OR CHAIR, ESPECIALLY OFFICE ARMCHAIR OR CHAIR |
US5725276A (en) * | 1995-06-07 | 1998-03-10 | Ginat; Jonathan | Tilt back chair and control |
US5577804A (en) * | 1995-06-30 | 1996-11-26 | Global Upholstery Company | Seat height adjustment mechanism for a chair |
-
1997
- 1997-10-03 EP EP97941142A patent/EP0949875B1/en not_active Expired - Lifetime
- 1997-10-03 WO PCT/IB1997/001202 patent/WO1998016140A1/en active IP Right Grant
- 1997-10-03 AU AU43153/97A patent/AU4315397A/en not_active Abandoned
- 1997-10-03 AT AT97941142T patent/ATE209011T1/en not_active IP Right Cessation
- 1997-10-03 JP JP51813498A patent/JP3278170B2/en not_active Expired - Fee Related
- 1997-10-03 DE DE59706076T patent/DE59706076D1/en not_active Expired - Lifetime
- 1997-10-03 US US09/284,393 patent/US6149236A/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD703988S1 (en) | 2013-06-07 | 2014-05-06 | Steelcase Inc. | Chair |
USD703987S1 (en) | 2013-06-07 | 2014-05-06 | Steelcase Inc. | Chair |
USD704487S1 (en) | 2013-06-07 | 2014-05-13 | Steelcase Inc. | Chair |
USD706547S1 (en) | 2013-06-07 | 2014-06-10 | Steelcase Inc. | Chair |
USD707976S1 (en) | 2013-06-07 | 2014-07-01 | Steelcase Inc. | Chair |
USD721529S1 (en) | 2013-06-07 | 2015-01-27 | Steelcase Inc. | Handle apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0949875A1 (en) | 1999-10-20 |
DE59706076D1 (en) | 2002-02-21 |
ATE209011T1 (en) | 2001-12-15 |
US6149236A (en) | 2000-11-21 |
JP2000505677A (en) | 2000-05-16 |
WO1998016140A1 (en) | 1998-04-23 |
AU4315397A (en) | 1998-05-11 |
JP3278170B2 (en) | 2002-04-30 |
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