EP0250995B1 - Chair, particularly an office chair - Google Patents
Chair, particularly an office chair Download PDFInfo
- Publication number
- EP0250995B1 EP0250995B1 EP87108536A EP87108536A EP0250995B1 EP 0250995 B1 EP0250995 B1 EP 0250995B1 EP 87108536 A EP87108536 A EP 87108536A EP 87108536 A EP87108536 A EP 87108536A EP 0250995 B1 EP0250995 B1 EP 0250995B1
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- EP
- European Patent Office
- Prior art keywords
- seat
- chair
- plate part
- coupling member
- chair according
- 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
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- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 210000003127 knee Anatomy 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000001419 dependent effect Effects 0.000 claims 1
- 210000000629 knee joint Anatomy 0.000 claims 1
- 210000002414 leg Anatomy 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 210000004197 pelvis Anatomy 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
Definitions
- the invention relates to a chair, in particular an office chair, according to the preamble of claim 1.
- a chair is known, the backrest of which performs an adjustment depending on the seat plate inclination via a handlebar gear.
- the front edge of the seat plate is raised when the seat plate is tilted by means of the transmission's handlebars. This has the consequence that the original footrest location is forcibly changed due to a so-called pulling up of the legs.
- the backrest which can be pivoted relative to the seat plate, causes a constant change in the essential body support points on the chair, which also has an adverse effect on the correct fit of the clothing.
- DE-OS 34 15 555 which comprises a seat made of two articulated parts.
- the front part is firmly connected to the seat support and the articulated rear part of the seat plate is articulated to a two-part backrest, the lower back part of which is pivotally held in the region of the pelvis on the rear plate part.
- This chair design makes a relative movement between the rear seat part and the subsequent lower seat back part possible when adjusting the inclination of the seat via a link mechanism, which also results in a comfort-deteriorating manner a rubbing effect between the seat back and the back of the user.
- a chair is known from EP-A-013 63 74, which comprises a height-adjustable seat support with a seat plate which can be tilted via a steering gear and to which a backrest is articulated.
- the height and the inclination of the seat plate can be adjusted via several interconnected coupling links, whereby the
- the object of the invention is to provide a chair which, in its basic position and in its inclined positions, ensures comfortable sitting without changing the relevant support points of the user to the chair and the leg support points on the chair support surface. This object is achieved by the characterizing features of claim 1. Further advantageous developments of the invention include the subclaims.
- the main advantages achieved with the invention are that the design of the kinematics lowers the front edge of the seat when the chair is tilted and the seat plate pivots about an upstream ideal axis of rotation. This is advantageously in the area of the knees of the user, which results in an unchanged support location for the feet and the legs are relieved at the same time. An uncomfortable pressure in the hollow of the knees by touching the front edge of the seat according to the prior art is hereby avoided according to the invention.
- the base frame 1 to 5 consists of a base frame 1, a seat 2, which is attached to the base frame 1 via a seat support 3 with the interposition of a link mechanism 4.
- the seat surface 2 comprises two interconnected plate parts 5 and 6, the rear plate part 6 being an integral part of a backrest 7.
- the base frame 1 has a spring element for height adjustment and ends in a base.
- the chair can be adjusted to a basic position G, in which the seat 2 occupies a position in a horizontal plane X-X. From this basic position G, the chair can be pivoted into an inclination position N, in which the front plate part 5 lies in an oblique Y-Y and the rear plate part 6 lies in an oblique Z-Z. From the basic position G to the inclination position N, all intermediate positions are possible, with locking in each position using a corresponding device.
- the link mechanism 4 essentially comprises two scissor-like coupling elements 8, 9 arranged between the plate parts 5 and 6 and the seat support 3, which are only shown as struts in FIGS. 1, 2, 3 and 5 for a better overview.
- These coupling elements 8 and 9 can be rotated relative to one another about an axis 17 and pivoted on the one hand on the seat support 3 about horizontal axes 10 and 11 and on the other hand articulated on the plate parts 5 and 6 about horizontal axes 12 and 13a, as FIG. 2 shows in more detail.
- the rear plate part 6 is made in one piece with the backrest 7 and has sections 14 on both sides via a joint 13 with the horizontal axis 13a, which run obliquely forward to the seat support 3 and form the link arms 15a. These can be pushed on a horizontal fixed axis 16 (FIGS. 1 to 3) and at the same time can be pivoted relatively to the front plate part 5 via the rear linkage (joint 13) of the front plate part 5 on the axis 13a, as shown in FIG. 3.
- the coupling members 8 and 9 and the link arms 15 have such lengths and are articulated in the manner on the seat support 3 and articulated with the plate parts 5 and 6 that a knee axis of rotation 19 is formed in the inclined positions of the seat surface 2. This lies in the same horizontal plane X-X with the seat 2 in its basic position G.
- the knee rotation axis 19 is located approximately unchanged in the horizontal plane X-X. Achieving such an unchanged position of this axis of rotation 19 is achieved by the link mechanism 4, which lowers the front plate part 5 below the horizontal plane X-X into the inclined plane Y-Y. In the intersection of these two planes X-X and Y-Y, the axis of rotation 19 is arranged, which, as shown in FIG. 4, lies approximately in the area of the user's knees.
- the rear plate part 6 is simultaneously forced into an inclined position in the oblique Z-Z.
- the angle of inclination ⁇ of the front plate part 5 is approximately 12 ° and the angle of inclination ⁇ of the rear plate part 6 is approximately 24 °, which corresponds to a ratio of 1: 2.
- the rear plate part 6 with the backrest 7 consists of an m part and can be inclined together about the axis 13a lying in front of the pelvis to the front plate part 5.
- people have two relevant support points 20 and 21 in the pelvic area, which are arranged accordingly in the seat and the backrest. These support points 20 and 21 do not change their position in relation to the chair when the chair is moved into position N, so that no relative movement can take place between the backrest 7 of the seat surface 2 and the user.
- FIGS. 6 and 7 a structural design of the chair with handlebar gear 4 is shown in more detail, with FIGS. 6 and 7 showing a construction corresponding to FIGS. 1, 2 and 3.
- the seat support 3 has arms which are guided forward and have 23 bearing eyes 24, 25 with the horizontal axes 10 and 11 at their free ends.
- the coupling members 9 are arranged on both sides of the seat support 3, which are held by a flat connecting element 26 arranged above the seat support 3 and which is firmly connected to pins 27, which form the axes 17.
- Longitudinal slots 28, 29, 30 and 31 in the joints of the coupling members 8 and 9, in the front plate part 5 and in the link arm 15 allow a jamming-free movement of the individual parts when the seat is tilted, as well as a positively guided movement according to the angular adjustment of the two plate parts 5 and 6
- the parts of the link mechanism such as the coupling links, the seat support and the two plate parts can consist of cast parts or be designed as sheet metal parts.
- the longitudinal slot 29 has no function in itself for the sequence of movements, but must allow the guide pin 10 penetrating the handlebars 9 to have clearance.
- FIGS. 6a and 7a A further embodiment is shown in FIGS. 6a and 7a.
- the control arm 15 is designed as a vertically extending control arm 15a according to the explanations according to FIGS. 1, 2, 3 and 5. This is connected to an adjoining vertical support beam 32 via an articulated joint 33 with a horizontal axis of rotation 34.
- the free end 35 of the support beam 32 is pivotable about a horizontal axis 37 in a bracket 36 which is firmly connected to the base frame 1.
- the coupling elements 8, 9, the plate parts 5, 6 and the backrest 7 correspond to the embodiment according to FIGS. 6 and 7.
- FIG. 10 The mode of operation of the embodiment according to FIGS. 6a and 7a is shown schematically in FIG. 10 and takes place in such a way that when the rear plate part 6 is pressed, the control arm 15a in the direction of the arrow 38 about the axis 13a of the joint 13, taking the Support struts 32 pivoted about the articulation 33.
- the link mechanism 4 has an operation as shown in more detail in FIGS. 1, 2 and 3.
- the reason for the special design of the handlebars 15a and 32 (Fig. 9 and Fig. 10) is that: When the chair is "owned” in the front area (plate 5, up to the joint 13a) there is no deflection. The chair is almost locked. Only when the rear part of the plate 6 or the backrest 7 is loaded is the seat inclination, as described, initiated.
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Hydrogenated Pyridines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Plural Heterocyclic Compounds (AREA)
- Special Chairs (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Stuhl, insbesondere einen Bürostuhl, nach dem Oberbegriff des Anspruchs 1.The invention relates to a chair, in particular an office chair, according to the preamble of
Aus der DE-OS 33 16 530 ist ein Stuhl bekannt, dessen Rückenlehne eine Verstellung in Abhängigkeit von der Sitzplattenneigung über ein Lenkergetriebe durchführt. Bei diesem Stuhl wird bei einer Neigungsverstellung der Sitzplatte über Lenker des Getriebes ein Anheben der Vorderkante der Sitzplatte bewirkt. Dies hat in komfortverschlechternder Weise eine zwangsweise Veränderung des ursprünglichen Fußabstützortes infolge eines sogenannten Hochziehens der Beine zur Folge. Es wird durch die sich relativ zur Sitzplatte verschwenkbare Rückenlehne eine ständige Veränderung der wesentlichen Körperabstützpunkte am Stuhl bewirkt, was auch einen sich nachteilig auf den korrekten Sitz der Kleidung auswirkenden Effekt nach sich zieht. Ferner ist aus der DE-OS 34 15 555 ein Stuhl bekannt geworden, der eine Sitzfläche aus zwei gelenkig miteinander verbundenen Teilen umfasst. Das vornliegende Teil ist fest mit dem Sitzträger verbunden und das angelenkte hintere Teil der Sitzplatte ist gelenkig mit einer zweiteiligen Rückenlehne verbunden, dessen unteres Lehnenteil im Bereich des Körperbeckens am hinteren Plattenteil schwenkbar gehalten wird. Durch diese Stuhlausbildung wird beim Neigungsverstellen des Sitzes über ein Lenkergetriebe eine Relativbewegung zwischen dem hinteren Sitzflächenteil und dem anschließenden unteren Sitzlehnenteil möglich, was ebenfalls in komfortverschlechternder Weise einen Reibeeffekt zwischen der Sitzlehne und dem Rücken des Benutzers ergibt.From DE-OS 33 16 530 a chair is known, the backrest of which performs an adjustment depending on the seat plate inclination via a handlebar gear. With this chair, the front edge of the seat plate is raised when the seat plate is tilted by means of the transmission's handlebars. This has the consequence that the original footrest location is forcibly changed due to a so-called pulling up of the legs. The backrest, which can be pivoted relative to the seat plate, causes a constant change in the essential body support points on the chair, which also has an adverse effect on the correct fit of the clothing. Furthermore, a chair has become known from DE-OS 34 15 555, which comprises a seat made of two articulated parts. The front part is firmly connected to the seat support and the articulated rear part of the seat plate is articulated to a two-part backrest, the lower back part of which is pivotally held in the region of the pelvis on the rear plate part. This chair design makes a relative movement between the rear seat part and the subsequent lower seat back part possible when adjusting the inclination of the seat via a link mechanism, which also results in a comfort-deteriorating manner a rubbing effect between the seat back and the back of the user.
Desweiteren ist aus der EP-A-013 63 74 ein Stuhl bekannt, der einen höhenverstellbaren Sitzträger mit einer über ein Lenkgetriebe in der Neigung verstellbaren Sitzplatte umfasst, an der eine Lehne angelenkt ist. Die Sitzplatte ist über mehrere untereinander verbundene Koppelglieder in der Höhe und in der Neigung verstellbar, wobei sich an der Vorderkante der Die Aufgabe der Erfindung besteht darin, einen Stuhl zu schaffen, der in seiner Grundstellung und in seinen Neigungsstellungen ein komfortables Sitzen ohne Veränderung der relevanten Abstützpunkte des Benutzers zum Stuhl sowie der Beinabstützpunkte an der Stuhlaufstandsfläche gewährleistet. Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Ausbildungen der Erfindung beinhalten die Unteransprüche.Furthermore, a chair is known from EP-A-013 63 74, which comprises a height-adjustable seat support with a seat plate which can be tilted via a steering gear and to which a backrest is articulated. The height and the inclination of the seat plate can be adjusted via several interconnected coupling links, whereby the The object of the invention is to provide a chair which, in its basic position and in its inclined positions, ensures comfortable sitting without changing the relevant support points of the user to the chair and the leg support points on the chair support surface. This object is achieved by the characterizing features of
Die hauptsächlich mit der Erfindung erzielten Vorteile bestehen darin, daß durch Auslegung der Kinematik sich die Sitzvorderkante bei einer Neigungsverstellung des Stuhles absenkt und die Sitzplatte sich um eine vorgelagerte ideelle Drehachse verschwenkt. Diese liegt in vorteilhafter Weise im Bereich der Kniee des Benutzers, wodurch sich ein unveränderter Abstützort der Füsse ergibt und die Schenkel gleichzeitig entlastet werden. Eine unkomfortable Pressung in den Kniekehlen durch ein Anhaben der Sitzvorderkante nach dem Stand der Technik wird erfindungsgemäß hiermit vermieden.The main advantages achieved with the invention are that the design of the kinematics lowers the front edge of the seat when the chair is tilted and the seat plate pivots about an upstream ideal axis of rotation. This is advantageously in the area of the knees of the user, which results in an unchanged support location for the feet and the legs are relieved at the same time. An uncomfortable pressure in the hollow of the knees by touching the front edge of the seat according to the prior art is hereby avoided according to the invention.
Desweiteren bestehen Vorteile darin, daß die relevanten Abstützpunkte des Benutzers zum Stuhl durch die einteilige Ausführung der hinteren Sitzplatte mit der Rückenlehne auch bei einer Neigungsverstellung unverändert sind und eine Beckenabstützung ohne Reibeffekte, d.h. Relativbewegungen zwischen Rücken und Stuhl, erzielt wird.Furthermore, there are advantages in that the relevant support points of the user to the chair are unchanged even with an inclination adjustment due to the one-piece design of the rear seat plate with the backrest and a pelvic support without friction effects, i.e. Relative movements between back and chair, is achieved.
Sitzuntersuchungen haben ergeben, daß eine ergonomisch bequeme Sitzhaltung gewährleistet ist, wenn das vordere Plattenteil der Sitzfläche zum hinteren Plattenteil im Verhältnis 1 : 2 geneigt wird. Dieses Verhältnis ist beim Verstellen des Sitzes durch das Lenkergetriebe auch in den Zwischenstellungen einhaltbar.Seat examinations have shown that an ergonomically comfortable sitting posture is ensured if the front plate part of the seat surface is inclined at a ratio of 1: 2 to the rear plate part. This ratio can also be maintained in the intermediate positions when the seat is adjusted by the handlebar gearbox.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.
Es zeigen
- Fig. 1 eine schematische Darstellung von Koppelgliedern eines Lenkergetriebes für einen Stuhl in einer Grundstellung,
- Fig. 2 eine Draufsicht zu Fig. 1,
- Fig. 3 eine schematische Darstellung der Koppelglieder des Lenkergetriebes für den Stuhl in einer Neigungsstellung,
- Fig. 4 eine Darstellung der Abstützpunkte im Stuhl in den beiden Endstellungen,
- Fig. 5 eine Seitenansicht des Stuhls mit Koppelgliedern, Sitzträger und Plattenteilen der Sitzfläche,
- Fig. 6 eine Seitenansicht des Lenkgetriebes gemäß Fig. 5,
- Fig. 6a eine weitere Ausbildung des Teiles des Lenkergetriebes, das mit dem Lenkergetriebe gemäß Fig. 5 verbunden wird,
- Fig. 7 eine Draufsicht zu Fig. 6,
- Fig. 7a eine Draufsicht zu Fig. 6a,
- Fig. 8 eine Ansicht in Pfeilrichtung A der Fig. 6a gesehen,
- Fig. 9 eine schematische Darstellung des Lenkergetriebes von der Seite gemäß der Fig. 6a in einer Grundstellung, und
- Fig. 10 eine schematische Darstellung einer Draufsicht zu Fig. 9 entsprechend der Fig. 7a,
Show it
- 1 is a schematic representation of coupling links of a link mechanism for a chair in a basic position,
- 2 is a plan view of FIG. 1,
- 3 shows a schematic illustration of the coupling links of the link mechanism for the chair in an inclined position,
- 4 shows the support points in the chair in the two end positions,
- 5 is a side view of the chair with coupling links, seat support and plate parts of the seat,
- 6 is a side view of the steering gear according to FIG. 5,
- 6a shows a further embodiment of the part of the link mechanism which is connected to the link mechanism according to FIG. 5,
- 7 is a plan view of FIG. 6,
- 7a is a plan view of FIG. 6a,
- 8 is a view in the direction of arrow A of FIG. 6a,
- Fig. 9 is a schematic representation of the link mechanism from the side of FIG. 6a in a basic position, and
- 10 is a schematic representation of a top view of FIG. 9 corresponding to FIG. 7a,
Der Stuhl gemäß den Fig. 1 bis 5 besteht aus einem Untergestell 1, einer Sitzfläche 2, die über einen Sitzträger 3 unter Zwischenschaltung eines Lenkergetriebes 4 am Untergestell 1 befestigt ist. Die Sitzfläche 2 umfasst zwei miteinander verbundene Plattenteile 5 und 6, wobei das hinten liegende Plattenteil 6 integrierter Bestandteil einer Rückenlehne 7 ist. Das Untergestell 1 weist ein Federelement zur Höhenverstellung auf und endet in einem Standfuß.1 to 5 consists of a
Der Stuhl ist in eine Grundstellung G verstellbar, bei der die Sitzfläche 2 eine Lage in einer horizontalen Ebene X-X einnimmt. Von dieser Grundstellung G aus kann der Stuhl in eine Neigungsstellung N verschwenkt werden, bei der das vordere Plattenteil 5 in einer Schrägebene Y-Y und das hintere Plattenteil 6 in einer Schrägebene Z-Z liegt. Von der Grundstellung G bis zur Neigungsstellung N sind alle Zwischenstellungen möglich, wobei in jeder Stellung eine Arretierung über eine entsprechende Vorrichtung erfolgt.The chair can be adjusted to a basic position G, in which the
Das Lenkergetriebe 4 umfasst im wesentlichen zwei scherenförmig zwischen den Plattenteilen 5 und 6 und dem Sitzträger 3 angeordnete Koppelglieder 8, 9, die in den Fig. 1, 2, 3 und 5 zur besseren Übersicht nur als Streben dargestellt sind. Diese Koppelglieder 8 und 9 sind gegeneinander um eine Achse 17 verdrehbar und einerseits am Sitzträger 3 um horizontale Achsen 10 und 11 verschwenkbar und andererseits an den Plattenteilen 5 und 6 um horizontale Achsen 12 und 13a angelenkt, wie Fig. 2 näher zeigt.The link mechanism 4 essentially comprises two scissor-
Das hintere Plattenteil 6 ist einteilig mit der Rückenlehne 7 ausgeführt und weist beidseitig über ein Gelenk 13 mit der horizontalen Achse 13a, schräg nach vorn zum Sitzträger 3 ausgeführte Abschnitte 14 auf, die die Lenkerarme 15a bilden. Diese sind auf einer horizontalen Festachse 16 (Fig. 1 bis 3) schiebbar und gleichzeitig über die hintere Anlenkung (Gelenk 13) des vorderen Plattenteils 5 auf der Achse 13a relativ verschwenkbar zum vorderen Plattenteil 5, wie Fig. 3 zeigt.The
Die Koppelglieder 8 und 9 sowie die Lenkerarme 15 weisen solche Längen auf und sind in der Weise am Sitzträger 3 angelenkt und mit den Plattenteilen 5 und 6 gelenkig verbunden, daß sich in den Neigungsstellungen der Sitzfläche 2 eine Kniedrehachse 19 ausbildet. Diese liegt in einer gleichen horizontalen Ebene X-X mit der Sitzfläche 2 in ihrer Grundstellung G.The
Die Kniedrehachse 19 ist in jeder Zwischenstellung bis zur Neigungsendstellung N, wie Fig. 3 zeigt, annähernd unverändert in der horizontalen Ebene X-X gelegen. Die Erzielung einer derartig unveränderten Lage dieser Drehachse 19 wird durch das Lenkergetriebe 4 erzielt, das das vordere Plattenteil 5 unter die horizontale Ebene X-X in die Schrägebene Y-Y absenkt. In der Schnittlinie dieser beiden Ebenen X-X und Y-Y ist die Drehachse 19 angeordnet, welche, wie Fig. 4 zeigt, etwa im Bereich der Kniekehlen des Benutzers liegt.In each intermediate position up to the end of inclination N, as shown in FIG. 3, the
Während der Verstellung des vorderen Plattenteils 5 wird gleichzeitig das hintere Plattenteil 6 in eine Neigungsstellung in der Schrägebene Z-Z zwangsweise gezogen. Der Neigungswinkel α des vorderen Plattenteils 5 beträgt etwa 12° und der Neigungswinkel β des hinteren Plattenteils 6 beträgt etwa 24°, was einem Verhältnis von 1 : 2 entspricht.During the adjustment of the
Das hintere Plattenteil 6 ist mit der Rückenlehne 7 aus eine m Teil bestehend und gemeinsam um die vor dem Becken liegende Achse 13a zum vorderen Plattenteil 5 neigbar. Wie Fig. 4 zeigt, weist der Mensch zwei relevante Abstützpunkte 20 und 21 im Beckenbereich auf, die entsprechend in der Sitzfläche und der Rückenlehne angeordnet sind. Diese Abstützpunkte 20 und 21 verändern bei einer Verstellung des Stuhles in die Position N ihre Lage zum Stuhl nicht, so daß keine Relativbewegung zwischen der Lehne 7 der Sitzfläche 2 und dem Benutzer stattfinden kann.The
In den Fig. 6 und 7 ist eine konstruktive Ausführung des Stuhles mit Lenkergetribe 4 näher dargestellt, wobei die Fig. 6 und 7 eine den Fig. 1, 2 und 3 entsprechende Konstruktion zeigen. Der Sitzträger 3 weist nach vorn geführte Arme auf, die an ihren freien Enden 23 Lageraugen 24, 25 mit den horizontalen Achsen 10 und 11 aufweisen. Außenliegend zu diesen Lageraugen 24, 25 sind zu beiden Seiten des Sitzträgers 3 die Koppelglieder 9 angeordnet, die über ein oberhalb des Sitzträgers 3 angeordnetes flächiges Verbindungselement 26 gehalten werden und welches mit Zapfen 27 fest verbunden ist, die die Achsen 17 bilden. Längsschlitze 28, 29, 30 und 31 in den Gelenken der Koppelglieder 8 und 9, im vorderen Plattenteil 5 und im Lenkerarm 15 erlauben bei einer Neigungsverstellung des Sitzes eine verklemmungsfreie Bewegung der einzelnen Teile sowie einen zwangsgeführten Bewegungsablauf entsprechend der Winkelverstellung der beiden Plattenteile 5 und 6. Die Teile des Lenkergetriebes wie die Koppelglieder, der Sitzträger sowie die beiden Plattenteile können aus Gußteilen bestehen oder als Blechteile ausgeführt sein. Der Längsschlitz 29 hat an sich keine Funktion für den Bewegungsablauf, sondern muß dem den Lenker 9 durchdringenden Führungsbolzen 10 Freigang gewähren.6 and 7, a structural design of the chair with handlebar gear 4 is shown in more detail, with FIGS. 6 and 7 showing a construction corresponding to FIGS. 1, 2 and 3. The
In den Fig. 6a und 7a ist eine weitere Ausbildung dargestellt. Bei dieser ist der Lenkerarm 15 gemäß den Ausführungen nach den Fig. 1, 2, 3 und 5 als sich vertikal erstreckender Lenkerarm 15a ausgeführt. Dieser wird mit einem sich anschließenden vertikalen Stützträger 32 über ein Knickgelenk 33 mit einer horizontalen Drehachse 34 verbunden. Das freie Ende 35 des Stützträgers 32 ist in einer Konsole 36, die mit dem Untergestell 1 fest verbunden ist, um eine horizontale Achse 37 verschwenkbar. Die Koppelglieder 8, 9, die Plattenteile 5, 6 und die Lehne 7 entsprechen der Ausführung nach den Fig. 6 und 7.A further embodiment is shown in FIGS. 6a and 7a. In this case, the
Die Wirkungsweise der Ausführung gemäß der Fig. 6a und 7a ist schematisch in Fig. 10 dargestellt und läuft in der Weise ab, daß bei einem Druck auf das hintere Plattenteil 6 der Lenkerarm 15a in Pfeilrichtung 38 um die Achse 13a des Gelenks 13 unter Mitnahme der Stützstreben 32 um das Knickgelenk 33 verschwenkt. Bei diesem Verschwenkvorgang hat das Lenkergetriebe 4 eine Wirkungsweise, wie sie in den Fig. 1, 2 und 3 näher dargestellt ist.The mode of operation of the embodiment according to FIGS. 6a and 7a is shown schematically in FIG. 10 and takes place in such a way that when the
Der Grund für die spezielle Ausführung der Lenker 15a und 32 (Fig. 9 und Fig. 10) ist der: Beim "Besitzen" des Stuhles im vorderen Bereich (Platte 5, bis zum Gelenk 13a) ist keine Einfederung vorhanden. Der Stuhl ist quasi arretiert. Erst wenn der hintere Teil der Platte 6 bzw. die Lehne 7 belastet werden, wird die Sitzneigung, wie beschrieben, eingeleitet.The reason for the special design of the
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87108536T ATE60496T1 (en) | 1986-07-03 | 1987-06-12 | CHAIR, ESPECIALLY OFFICE CHAIR. |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863622272 DE3622272A1 (en) | 1986-07-03 | 1986-07-03 | CHAIR, ESPECIALLY OFFICE CHAIR |
DE3622272 | 1986-07-03 | ||
DE8617738U DE8617738U1 (en) | 1986-07-03 | 1986-07-03 | Chair, especially office chair |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0250995A2 EP0250995A2 (en) | 1988-01-07 |
EP0250995A3 EP0250995A3 (en) | 1988-04-20 |
EP0250995B1 true EP0250995B1 (en) | 1991-01-30 |
Family
ID=41840887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87108536A Expired - Lifetime EP0250995B1 (en) | 1986-07-03 | 1987-06-12 | Chair, particularly an office chair |
Country Status (8)
Country | Link |
---|---|
US (1) | US4773706A (en) |
EP (1) | EP0250995B1 (en) |
AT (1) | ATE60496T1 (en) |
CA (1) | CA1266226A (en) |
DE (3) | DE8617738U1 (en) |
DK (1) | DK339687A (en) |
ES (1) | ES2021300B3 (en) |
NO (1) | NO872593L (en) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3817761A1 (en) * | 1988-05-19 | 1989-11-30 | Roeder Gmbh | Chair, in particular work or office chair |
DE3900220A1 (en) * | 1989-01-05 | 1990-07-12 | Wilkhahn Wilkening & Hahne | CHAIR |
US4979778A (en) * | 1989-01-17 | 1990-12-25 | Brayton International, Inc. | Synchrotilt chair |
US5018787A (en) * | 1990-06-20 | 1991-05-28 | Shepherd Products U.S. Inc. | Chair seat tilt control |
DE4019876A1 (en) * | 1990-06-22 | 1992-01-02 | Simon Desanta | CHAIR, ESPECIALLY OFFICE CHAIR |
DE4040139A1 (en) * | 1990-12-15 | 1992-06-17 | Link Wilhelm Kg | Office chair with divided seat - has articulated lever system for controlled adjustment between backrest and seat |
US5318345A (en) * | 1991-06-07 | 1994-06-07 | Hon Industries, Inc. | Tilt back chair and control |
US5203853A (en) * | 1991-09-18 | 1993-04-20 | Herman Miller, Inc. | Locking chair tilt mechanism with torsion bar |
CH685277A5 (en) * | 1992-10-08 | 1995-05-31 | Syntech Sa | Chair mechanism. |
IL103477A0 (en) * | 1992-10-20 | 1993-03-15 | Paltechnica Nitzanim | Office and like chairs |
DE4324543C2 (en) * | 1993-07-22 | 2003-06-26 | Dauphin Friedrich W Gmbh | Chair, especially office chair |
US5388889A (en) * | 1993-09-23 | 1995-02-14 | Westinghouse Electric Corporation | Torque control mechanism for chairs |
DE69414878T2 (en) * | 1993-11-01 | 1999-06-24 | Labofa A/S, Skalskoer | OFFICE CHAIR WITH SYNCHRONOUS ADJUSTMENT OF SEAT AND BACKREST |
US5573303A (en) * | 1995-05-16 | 1996-11-12 | Doerner Products Ltd. | Chair seat tilting mechanism |
US5775774A (en) * | 1996-08-12 | 1998-07-07 | Okano; Hiroshi | Tilt mechanism for chairs |
DK0884964T3 (en) * | 1996-10-11 | 2002-07-15 | Wolfgang Emmenegger | Chair, especially an office chair |
DE19726160A1 (en) * | 1997-06-20 | 1998-12-24 | Johannes Uhlenbrock | Seating, in particular office swivel chair |
US6250715B1 (en) | 1998-01-21 | 2001-06-26 | Herman Miller, Inc. | Chair |
US6007150A (en) | 1998-03-08 | 1999-12-28 | Milsco Manufacturing Company | Motorcycle seat with adjustable backrest |
SE512936C2 (en) | 1998-09-10 | 2000-06-05 | Bertil Jonsson | Chair |
DE29910620U1 (en) * | 1999-06-17 | 2000-10-19 | König + Neurath AG, 61184 Karben | Chair, especially office chair |
ATE285696T1 (en) * | 2000-04-05 | 2005-01-15 | Brian Aaby Hansen | CHAIR |
DE10122948C1 (en) * | 2001-05-11 | 2003-03-13 | Armin Sander | Chair, especially office chair |
US20030132653A1 (en) * | 2001-10-18 | 2003-07-17 | Doug Thole | Tension control mechanism for a chair |
EP2010025A4 (en) * | 2006-04-24 | 2010-11-17 | Humanscale Corp | Chair having an automatically adjusting resistance to tilting |
CN102772053A (en) | 2007-01-29 | 2012-11-14 | 赫尔曼米勒有限公司 | Seating structure and methods for the use thereof |
WO2008112918A1 (en) | 2007-03-13 | 2008-09-18 | Hni Technologies Inc. | Dynamic chair back lumbar support system |
WO2008112919A1 (en) * | 2007-03-13 | 2008-09-18 | Hni Technologies Inc. | Six bar mechanism and control for chair |
CN107023096A (en) | 2010-05-05 | 2017-08-08 | 奥斯蒂尔公司 | Removable and disassembled board wall system for docking glaze facing-wall board |
US9504326B1 (en) | 2012-04-10 | 2016-11-29 | Humanscale Corporation | Reclining chair |
US9706845B2 (en) * | 2012-09-20 | 2017-07-18 | Steelcase Inc. | Chair assembly |
WO2014144143A1 (en) | 2013-03-15 | 2014-09-18 | Hni Technologies Inc. | Chair with activated back flex |
CN106455821A (en) | 2014-04-17 | 2017-02-22 | Hni技术公司 | Chair and chair control assemblies, systems, and methods |
USD731833S1 (en) | 2014-04-17 | 2015-06-16 | Allsteel Inc. | Chair |
CN106455824A (en) | 2014-04-17 | 2017-02-22 | Hni技术公司 | Flex lumbar support |
USD743180S1 (en) | 2014-10-15 | 2015-11-17 | Hni Technologies Inc. | Chair |
US9801470B2 (en) | 2014-10-15 | 2017-10-31 | Hni Technologies Inc. | Molded chair with integrated support and method of making same |
US10966527B2 (en) | 2017-06-09 | 2021-04-06 | Steelcase Inc. | Seating arrangement and method of construction |
JP6826043B2 (en) | 2015-04-13 | 2021-02-03 | スティールケース インコーポレイテッド | Seating structure |
US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
US10194750B2 (en) | 2015-04-13 | 2019-02-05 | Steelcase Inc. | Seating arrangement |
ES2800425T3 (en) * | 2018-04-17 | 2020-12-30 | L&P Property Man Co | Tilt mechanism of a chair and chair |
IT201800002761U1 (en) * | 2018-06-14 | 2019-12-14 | ARMCHAIR FOR OFFICE WITH MOVABLE BACKREST AND SEAT IN SYNCHRONY. | |
US11589678B2 (en) | 2019-01-17 | 2023-02-28 | Hni Technologies Inc. | Chairs including flexible frames |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA806983A (en) * | 1965-07-23 | 1969-02-25 | Dufton Ronald | Chair tilting mechanism |
US3356413A (en) * | 1965-09-10 | 1967-12-05 | Bostrom Corp | Vehicle seat |
DE1902670C3 (en) * | 1968-02-01 | 1975-11-27 | Gerdi Kerstholt Geb. Spaeth | Seat with adjustable seat part and adjustable backrest |
DE2651843A1 (en) * | 1976-11-13 | 1978-05-18 | D Team Design Gmbh | Chair with shaped seat and adjustable backrest - has articulated joints between backrest sections allowing firm support of pelvis |
DE2822574C3 (en) * | 1978-05-24 | 1981-02-12 | Martin Stoll Gmbh, 7890 Waldshut- Tiengen | chair |
US4533177A (en) * | 1979-06-06 | 1985-08-06 | Knoll International, Inc. | Reclining chair |
CH645795A5 (en) * | 1979-07-23 | 1984-10-31 | Drabert Soehne | Chair, in particular visual display unit chair |
DE3152945C1 (en) * | 1981-08-19 | 1987-06-19 | Giroflex Entwicklungs Ag | Chair with swivel seat and backrest that can be swiveled relative to it |
CH659179A5 (en) * | 1983-05-06 | 1987-01-15 | Provenda Marketing Ag | Working chair, especially an office chair |
IT1161498B (en) * | 1983-07-12 | 1987-03-18 | Castelli Spa | CHAIR |
US4560199A (en) * | 1983-07-22 | 1985-12-24 | Pamont Ag | Recliner chair |
DE3372059D1 (en) * | 1983-10-05 | 1987-07-23 | Giroflex Entwicklungs Ag | Chair with an inclinable seat and back-rest |
CH666171A5 (en) * | 1984-10-03 | 1988-07-15 | Giroflex Entwicklungs Ag | CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER. |
-
1986
- 1986-07-03 DE DE8617738U patent/DE8617738U1/en not_active Expired
- 1986-07-03 DE DE19863622272 patent/DE3622272A1/en active Granted
-
1987
- 1987-06-12 AT AT87108536T patent/ATE60496T1/en active
- 1987-06-12 ES ES87108536T patent/ES2021300B3/en not_active Expired - Lifetime
- 1987-06-12 DE DE8787108536T patent/DE3767784D1/en not_active Expired - Lifetime
- 1987-06-12 EP EP87108536A patent/EP0250995B1/en not_active Expired - Lifetime
- 1987-06-19 NO NO872593A patent/NO872593L/en unknown
- 1987-07-02 DK DK339687A patent/DK339687A/en not_active Application Discontinuation
- 1987-07-02 CA CA000541022A patent/CA1266226A/en not_active Expired - Lifetime
- 1987-07-06 US US07/070,240 patent/US4773706A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4773706A (en) | 1988-09-27 |
DK339687D0 (en) | 1987-07-02 |
EP0250995A2 (en) | 1988-01-07 |
NO872593D0 (en) | 1987-06-19 |
DE3767784D1 (en) | 1991-03-07 |
ES2021300B3 (en) | 1991-11-01 |
NO872593L (en) | 1988-01-04 |
DK339687A (en) | 1988-01-04 |
ATE60496T1 (en) | 1991-02-15 |
DE3622272C2 (en) | 1988-06-01 |
CA1266226A (en) | 1990-02-27 |
EP0250995A3 (en) | 1988-04-20 |
DE3622272A1 (en) | 1988-01-21 |
DE8617738U1 (en) | 1988-03-10 |
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