EP3409144B1 - Chair, specifically conference or office chair and method of producing such a chair - Google Patents
Chair, specifically conference or office chair and method of producing such a chair Download PDFInfo
- Publication number
- EP3409144B1 EP3409144B1 EP18172103.6A EP18172103A EP3409144B1 EP 3409144 B1 EP3409144 B1 EP 3409144B1 EP 18172103 A EP18172103 A EP 18172103A EP 3409144 B1 EP3409144 B1 EP 3409144B1
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- European Patent Office
- Prior art keywords
- carrier
- seat
- chair
- storage element
- backrest
- Prior art date
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- 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
Definitions
- the present invention relates to a chair, in particular a conference or office chair, and a method for producing such a chair.
- Office swivel chairs exist with various designs of a swivel or synchronous mechanism.
- a synchronous mechanism specifies an exact movement sequence and has an integrated spring, which provides a preload for the movement sequence.
- the present invention is based on the object of specifying an improved chair, in particular a conference or office chair.
- the chair in question should be both of high quality and light and inexpensive to manufacture. Due to these properties, alternative uses, for example in the private sector, can also be developed.
- this object is achieved by a chair with the features of claim 1 and / or by a method with the features of claim 11.
- the idea on which the present invention is based is that of a flexible-elastic storage element arranged in the area of the translation, by means of which the chair in question can be pivoted synchronously or in a synchronous manner, as a force storage element for a predetermined movement sequence when pivoting the backrest support and the coupling coupled therewith via the translation Insert seat support.
- the flexible-elastic storage element mentioned is coupled to the seat support and the backrest support.
- the storage member When pivoting, the storage member is tensioned and in this way transmits a force which restores the backrest support and the seat support of the carrying device into the upright position.
- the storage member is able to replace a biasing spring in the range of the translation.
- the structure of the chair can thus advantageously be made significantly slimmer, which has an aesthetic effect and is therefore advantageous from a design point of view.
- the flexible-elastic storage member forms a kinematic chain together with at least one first articulated pivot point of the translation, so that the storage member according to the invention is advantageously integrated into the transmission of movements and torques when the chair according to the invention is loaded and unloaded .
- the storage element of the translation provided on the carrying device accordingly forms a flat gear.
- an integration of an energy accumulator with a storage element allows a novel overall design of the chair.
- other parts that are movable in the predetermined movement sequence can thus have a certain flexibility.
- a new path is thus taken with regard to the predetermined sequence of movements when the chair is pivoted.
- the seat support of the carrying device can be integrated as part of the storage element and replace articulated pivot points of the kinematic chain with the corresponding flexibility.
- a flexible design of the parts advantageously allows a particularly slim design and the use of materials that can be easily formed.
- the translation is provided in particular as a replacement for a conventional synchronous mechanism and preferably functions in a synchronous manner, so that when pivoting in a predetermined sequence of movements it is described as for a synchronous mechanism.
- the backrest support and the seat support each pivot in a predetermined manner in absolute terms and relative to one another.
- the seat support and the backrest support thus pivot differently.
- the seat support is preferably raised slightly.
- the translation in addition to the first articulated pivot point, the translation will also have a second articulated pivot point, which are part of the kinematic chain.
- the backrest support can be designed to be pivotable relative to two different arms or legs of the storage element, one of these legs being able to form the seat support of the carrying device, for example.
- the flexible-elastic storage element will represent at least two pivot points of the kinematic chain or the storage element will comprise at least two virtual pivot points.
- the storage element is, for example, designed to be flexible in such a way that loads on the chair can be converted into elastic material deformations of the storage element by a person sitting down, which can be mechanically reinterpreted as rotations around only virtual pivot points.
- These virtual fulcrums are arranged along the structure of the storage element, their alignment with the real articulated pivots of the translation forms a polygon and is combined with the articulated pivots of the translation to form the kinematic chain.
- the translation is coupled to a seat base.
- the translation thus represents a deflection of force between the backrest support, seat support and seat base and for this purpose has a first and a second pivot point, at least of which the at least one articulated pivot point of the translation is coupled to the seat base and is arranged fixedly relative thereto.
- the translation will have a first virtual and a second virtual pivot point, which are included in the storage element, in this case the at least one articulated pivot point with a second articulated pivot point arranged on the storage element via a first link and the two virtual pivot points with one another via a second Handlebar coupled, wherein the first link is fixed to the backrest support or integrally formed with the backrest support.
- the translation does not require a sliding joint or a link guide and is therefore free of a link. In this way, the movement sequence of a synchronous mechanism is realized with a very slim design.
- the backrest support can be rotatably mounted at the at least one articulated pivot point with respect to the seat base, and the storage element or the seat support connected to it can be articulated at one free end either with the second articulated one Be provided pivot point at which it is rotatably connected to the backrest support is, or be flexibly connected to the backrest support, in particular via a web.
- the connection of the seat support to the storage element formed a third virtual pivot point and the translation then has only one "real" articulated pivot point, namely the at least one already mentioned above.
- the flexible-elastic storage element can be connected to the seat support, molded onto it or provided in one piece with it.
- the seat support of the chair can form part of the storage element and, due to its elastic design, form part of the energy storage device, which in turn builds up and provides the restoring force.
- the storage member of the translation can be formed with an elastically deformable plastic material, in particular a fiber-reinforced plastic, which shows the flexibly elastic property on the storage member in a suitable manner.
- the storage member with the seat support can have a curved shape which, when the chair is at rest, enclose an acute angle of between 1 ° and 40 °, preferably between 10 ° and 30 °, in particular 25 °
- At least one armrest support can be arranged on the support device on at least one chair side, in particular one armrest support on each chair side, which can be connected to the seat support and / or the backrest support.
- the armrest supports can also be connected to one another, for example, a common connection can be made underneath the seat support and additionally connected to it.
- the respective armrest support can be provided for carrying an armrest body or just an armrest cushion. Alternatively, the armrest support can also directly form an armrest body.
- the translation has a first stop, which limits a pivoting range of the seat support and backrest support in the upright position such that when the stop is reached, the backrest support and the seat support is in the upright position against the stop-holding bias of the storage member.
- the backrest is upright in this position.
- a preferred location for arranging the stop can be, for example, in the vicinity of the second articulated pivot point, so that the stop is close to the seat support. In this way, for example, a handlebar in contact with the stop would not be subjected to excessive moments.
- the translation has a second stop, which limits the pivoting range of the seat support and backrest support in a maximum pivoted position and / or the translation can be provided with a locking element, which seat support and backrest support in a selectable pivoted position against at least one Determines the direction of movement.
- the swiveling range to the rear exceeds a maximum swiveling angle, for example of the order of 20 °, and on the other hand, if desired, the dynamics of the chair can also be restricted for a selectable period of time. This restriction or the definition can also refer to both directions of movement.
- the second articulated pivot point or a third virtual pivot point can be arranged in a rear region and the second virtual pivot point in a front region of the seat carrier, the second link having a greater length and / or a greater inclination than the first link .
- the seat carrier is raised more than in the rear region, so that the seat carrier is pivoted slightly backwards.
- the length and / or inclination of the first and second links are each provided such that a ratio of a pivoting angle of the backrest support to a pivoting angle of the seat support in the rearwardly pivoted position is 2 to 1 to 4 to 1, in particular 3 to 1 , is.
- the backrest support can be pivoted backwards by 21 °, while the seat support can be pivoted backwards by 7 °.
- An independent height positioning of the sitting position allows, for example, a further development in the chair according to the invention, in which a manipulable height adjustment device is connected to the storage member, which can be actuated via a handle which is arranged and can be gripped in the region of the seat support. It is able to manipulate a height adjustment device, for example in the form of a gas spring, as required, even when the chair is occupied.
- a seat element can be arranged on the seat support, which is provided fixable or fixed or is slidably provided along the seat support by a guide means .
- a guide means can be formed, for example, a link or similar guide rail arranged on the seat support (2).
- FIG. 1 to 3 show a chair designated as a whole by 1, which is designed, for example, as an office swivel chair with a base 35 with rollers 26.
- a chair 1 can be seen on which a support device 4 of the chair 1 is arranged on a seat base 9.
- the support device 4 of the chair is provided with a seat support 2 and a backrest support 3 and with a translation 5 coupling the seat support 2 with the backrest support 3.
- the translation 5 allows the backrest support 3 and the seat support 2 to be pivoted between an upright and a pivoted-back position with a predetermined sequence of movements.
- a flexible-elastic storage element 8 is provided and set up on the transmission 5, which provides a force which restores the upright position when the carrying device 4 is acted upon, and the flexible-elastic storage member 8 also forms a joint with at least one first articulated pivot point 10 of the transmission 5 kinematic chain 15.
- the kinematic chain 15 mentioned is the feature of the system formed by the transmission 5, which represents a transmission and is responsible for the transmission of movements and torques. This is best based on the Fig. 3 understandable who the chair of Fig. 1 shows both with its first articulated pivot point 10 and its second articulated pivot point 11, as well as the further virtual pivot points 12, 13 that are present in the structure of the storage element 8 and by which rotational movements the flexible-elastic storage element 8 performs due to its shape in the Interaction with its material properties is able.
- the translation 5 has a first virtual and a second virtual Pivot point 12, 13, which are encompassed by the storage element 8, and the first articulated pivot point 10 is coupled to the second articulation pivot point 11 arranged on the storage element 8 via a first link 16, indicated by the dashed-line connection of the two articulated pivot points 10, 11 in the Fig. 1 and 3rd .
- the two virtual pivot points 12, 13 are also coupled to one another, specifically via a second link 16, only illustrated in FIG Fig. 3 by dashed lines.
- the dashed-line connection of the second articulated pivot point 11 to the one of the virtual pivot points 12 is only intended to make their coupling to the kinematic chain 15 clear.
- the mentioned first link 16 is firmly connected to the backrest support 3, in the Fig. 1 and 3rd it is even integrally formed with the backrest support 3.
- a chair 1 according to the invention in which compared to the representations of the Fig. 1 and 3rd the second articulated pivot point 11 is replaced by a third virtual pivot point 14 at approximately the same location on the storage element 8 or seat support 2, which, like the other virtual pivot points 12, 13, is integrated into the structure of the storage element 8, so that the kinematic Chain 15 remains intact.
- the ability to be represented in virtual pivot points 12, 13, 14 of the storage element 8 of the translation 5 on the chair 1 of the Fig. 2 is, as before with the Fig. 1 and 3rd the formation of the storage member 8 in an elastic deformable material, here a fiber-reinforced plastic material. This can be formed by a polyamide, for example.
- a partially constructed chair 1 according to the invention, the seat base 9 of which supports the carrying device 4 of the chair 1 against the stand 35, which is designed as a swivel foot, with rollers 26 and which is coupled to a height-adjustable compression spring section for this purpose.
- the chair 1 is partially constructed in the Fig. 4 in such respects, as initially only the storage element 8, which provides the transmission 5, is shown on the carrying device 4 and is permanently connected to the seat base 9.
- the storage element 8 has a kind of curved frame 18, the frame sections 18a-18d of which surround a recess 19.
- the two frame sections 18b, 18c assigned to the chair sides each form a curved frame side with an upper and a lower leg 20, 21, of which the lower leg 21 will form the second link 16 of the kinematic chain 15 to be assembled on the chair.
- the storage member 8, which has a curved shape in the above-mentioned projection encloses an acute angle of the order of 25 ° in the rest position of the chair 1 with the two legs 20, 21.
- the chair 1 is also provided with a seat support 2, so that the seat support 2 and the backrest support 3 are coupled via the transmission 5 of the storage element 8.
- the backrest support 3 is rotatably mounted at the at least one articulated pivot point 10 with respect to the seat base 9 and that the storage element 8 or the seat support 2 connected to it is provided with the second articulated pivot point 11 in an end region of its upper leg 20 is on which this is rotatably connected to the backrest support 3.
- the storage element 8 is formed in one piece with the backrest support 3, the first link 16 is at least in this sense designed as part of the backrest support 3.
- the upper leg 20 of the storage member 8 is with its free end, the web 22 and the Handlebar 16 forms, by applying the pretension to the articulated pivot point 10 located in the area of the seat base 9.
- the backrest support 3 is essentially formed by a backrest frame 30, which in turn encircles a recess 31 and can, for example, carry upholstery (not shown) or else a textile braid.
- the flexible-elastic storage element 8 is connected to the seat support 2, which in turn is connected to one in the Fig. 7
- Seat cushion 32 shown can be equipped as a seat element. The sliding guidance of the seat element is not shown here.
- the translation 5 of the storage member 8 determines the sequence of movements of the carrying device with the seat support 2 and the backrest support 3 when pivoting from the upright position into a rearwardly pivoted position, as is common in the Fig. 7 are shown, the latter position being shown in dashed lines.
- the storage member 8 is obviously designed and arranged in such a way that it enables the movement sequence of the seat support 2 and the backrest support 3 which is predetermined by the translation 5.
- the storage member 8 provides the restoring force in the upright position, namely over the entire movement sequence, moreover this force is also present in the upright position due to the coupling under pretension.
- Both handlebars 16 and 17 are inclined forward both in the upright position and in the pivoted-back position, so that a weight force of a person sitting on the chair 1 brings about a restoring moment and the storage element 8 designed as a force storage element therefore only has to work against the backrest force .
- the position pivoted backwards is achieved in that a person sitting on the chair 1 leans back and thus applies a backrest force to the backrest support 3, which overcomes a spring force of the storage element 8.
- the seat surface formed by the seat support 2 provided with a seat cushion 32 is somewhat raised overall and additionally also pivoted, but to a significantly lesser extent compared to the backrest support 3.
- the memory element 8 is, as is also best in the Fig. 7 recognizes, in its tensioned state, loaded both on pressure and on bending and thus elastically compressed and bent.
- the position of the support device 4 pivoted backwards is achieved by a person sitting on the chair 1 leaning backwards and thus applying a backrest force to the backrest support 3, which overcomes a spring force of the storage element 8.
- second stop restricting the pivoting range of the seat support 2 and backrest support 3 in the pivoted position are in the area of the first or, if present, second articulated pivot point 10, 11 in the form of stop wedges provided, which are supported in the upright position and in the pivoted position at suitable points.
- the stops are arranged and designed such that, when the first stop is reached, there is still a pretension of the storage element 8 holding the backrest support 3 and the seat support 2 in the upright position. In this way, a defined position of the translation 5, the seat support 2 and the backrest support 3 is ensured, for example, even in the upright position.
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- 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)
Description
Die vorliegende Erfindung betrifft einen Stuhl, insbesondere einen Konferenz- oder Bürostuhl, sowie ein Verfahren zur Herstellung eines derartigen Stuhls.The present invention relates to a chair, in particular a conference or office chair, and a method for producing such a chair.
Obwohl die vorliegende Erfindung sowie die ihr zugrunde liegende Problematik nachstehend in Bezug auf Bürodrehstühle näher beschrieben wird, ist sie darauf nicht beschränkt, sondern auf vielfältige Stühle, insbesondere Konferenz- oder Bürostühle, übertragbar.Although the present invention and the problem on which it is based are described in more detail below in relation to office swivel chairs, it is not restricted to this, but can be transferred to a variety of chairs, in particular conference or office chairs.
Bürodrehstühle existieren mit vielfältigen Ausgestaltungen einer Schwenk- bzw. Synchronmechanik. Eine Synchronmechanik gibt einen genauen Bewegungsablauf vor und weist eine integrierte Feder auf, welche eine Vorspannung für den Bewegungsablauf bereitstellt.Office swivel chairs exist with various designs of a swivel or synchronous mechanism. A synchronous mechanism specifies an exact movement sequence and has an integrated spring, which provides a preload for the movement sequence.
Ein Bürodrehstuhl mit Schwenkmechanik ist beispielsweise in der Druckschrift
Aus der
Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen verbesserten Stuhl, insbesondere Konferenz- oder Bürostuhl, anzugeben. Der betreffende Stuhl soll dabei sowohl qualitativ hochwertig, als auch leicht und günstig herzustellen sein. Aufgrund dieser Eigenschaften lassen sich gegebenenfalls auch alternative Nutzungen etwa im privaten Bereich erschließen.Against this background, the present invention is based on the object of specifying an improved chair, in particular a conference or office chair. The chair in question should be both of high quality and light and inexpensive to manufacture. Due to these properties, alternative uses, for example in the private sector, can also be developed.
Erfindungsgemäß wird diese Aufgabe durch einen Stuhl mit den Merkmalen des Patentanspruchs 1 und/oder durch ein Verfahren mit den Merkmalen des Patentanspruchs 11 gelöst.According to the invention, this object is achieved by a chair with the features of
Demgemäß ist vorgesehen:
- Ein Stuhl, insbesondere ein Konferenz- oder Bürostuhl, wie in
Anspruch 1 definiert. - Ein Verfahren zur Herstellung eines Stuhls, wie in
Anspruch 11 definiert.
- A chair, particularly a conference or office chair, as defined in
claim 1. - A method of making a chair as defined in
claim 11.
Die der vorliegenden Erfindung zu Grunde liegende Idee besteht darin, ein im Bereich der Übersetzung, mittels derer der betreffende Stuhl synchron oder synchronähnlich verschwenkbar ist, angeordnetes flexibel-elastisches Speicherglied als Kraftspeicherelement für einen vorbestimmten Bewegungsablauf beim Verschwenken des Rückenlehnenträgers und des damit über die Übersetzung gekoppelten Sitzträgers einzusetzen. Dazu wird das erwähnte flexibel-elastische Speicherglied mit dem Sitzträger und dem Rückenlehnenträger gekoppelt. Bei einem Verschwenken wird das Speicherglied gespannt und überträgt derart eine den Rückenlehnenträger und den Sitzträger der Trageinrichtung in die aufrechte Position rückstellende Kraft.The idea on which the present invention is based is that of a flexible-elastic storage element arranged in the area of the translation, by means of which the chair in question can be pivoted synchronously or in a synchronous manner, as a force storage element for a predetermined movement sequence when pivoting the backrest support and the coupling coupled therewith via the translation Insert seat support. For this purpose, the flexible-elastic storage element mentioned is coupled to the seat support and the backrest support. When pivoting, the storage member is tensioned and in this way transmits a force which restores the backrest support and the seat support of the carrying device into the upright position.
Auf diese Weise ist das Speicherglied in der Lage eine Vorspannfeder im Bereich der Übersetzung zu ersetzen. Vorteilhaft kann der Aufbau des Stuhls somit wesentlich schlanker gestaltet werden, was ästhetisch wirkt und somit aus Designaspekten vorteilhaft ist. Bei der Anordnung an der Trageinrichtung bildet das flexibel-elastische Speicherglied gemeinsam mit wenigstens einem ersten gelenkigen Drehpunkt der Übersetzung eine kinematische Kette, so dass das erfindungsgemäße Speicherglied in vorteilhafter Weise in die Übertragung von Bewegungen und Drehmomenten bei Be- und Entlastung des erfindungsgemäßen Stuhls integriert ist. Das an der Trageinrichtung vorgesehene Speicherglied der Übersetzung bildet demnach ein ebenes Getriebe.In this way, the storage member is able to replace a biasing spring in the range of the translation. The structure of the chair can thus advantageously be made significantly slimmer, which has an aesthetic effect and is therefore advantageous from a design point of view. When arranged on the carrying device, the flexible-elastic storage member forms a kinematic chain together with at least one first articulated pivot point of the translation, so that the storage member according to the invention is advantageously integrated into the transmission of movements and torques when the chair according to the invention is loaded and unloaded . The storage element of the translation provided on the carrying device accordingly forms a flat gear.
Darüber hinaus erlaubt eine derartige Integration eines Kraftspeichers mit einem Speicherglied eine neuartige Gesamtauslegung des Stuhls. Insbesondere können somit auch weitere in dem vorbestimmten Bewegungsablauf bewegliche Teile eine gewisse Flexibilität aufweisen. Es wird somit hinsichtlich des vorbestimmten Bewegungsablaufs bei dem Verschwenken des Stuhls ein neuer Weg beschritten. Anstatt einen Bewegungsablauf der Übersetzung einer Synchronmechanik möglichst exakt starr vorzugeben wird nun eine vorbestimmbare Flexibilität einzelner oder mehrerer Teile in den vorbestimmten Bewegungsablauf mit einbezogen. Hierbei kann beispielsweise der Sitzträger der Trageinrichtung als Teil des Speicherglieds integriert sein und mit der entsprechenden Flexibilität gelenkartige Drehpunkte der kinematischen Kette ersetzen. Eine flexible Auslegung der Teile erlaubt vorteilhaft wiederum ein besonders schlankes Design sowie den Einsatz auf einfache Weise zu formender Werkstoffe.In addition, such an integration of an energy accumulator with a storage element allows a novel overall design of the chair. In particular, other parts that are movable in the predetermined movement sequence can thus have a certain flexibility. A new path is thus taken with regard to the predetermined sequence of movements when the chair is pivoted. Instead of specifying a movement sequence of the translation of a synchronous mechanism as rigidly as possible, it is now possible to predetermine it Flexibility of individual or multiple parts included in the predetermined sequence of movements. In this case, for example, the seat support of the carrying device can be integrated as part of the storage element and replace articulated pivot points of the kinematic chain with the corresponding flexibility. A flexible design of the parts advantageously allows a particularly slim design and the use of materials that can be easily formed.
Die Übersetzung ist insbesondere als Ersatz für eine herkömmliche Synchronmechanik vorgesehen und funktioniert vorzugsweise synchronähnlich, sodass beim Verschwenken in vorbestimmter Bewegungsablauf wie bei einer Synchronmechanik beschrieben wird. Dementsprechend verschwenken sich der Rückenlehnenträger und der Sitzträger in vorbestimmter Weise jeweils absolut betrachtet und relativ zueinander. Der Sitzträger und der Rückenlehnenträger verschwenken somit unterschiedlich stark. Ferner wird der Sitzträger vorzugsweise leicht angehoben. Vorteilhaft bleibt somit aus Anwendersicht die Funktionalität einer Synchronmechanik mit den bekannten Vorteilen, wie beispielsweise Vermeiden des Hemdauszieheffekts und dergleichen, erhalten.The translation is provided in particular as a replacement for a conventional synchronous mechanism and preferably functions in a synchronous manner, so that when pivoting in a predetermined sequence of movements it is described as for a synchronous mechanism. Accordingly, the backrest support and the seat support each pivot in a predetermined manner in absolute terms and relative to one another. The seat support and the backrest support thus pivot differently. Furthermore, the seat support is preferably raised slightly. The functionality of a synchronous mechanism with the known advantages, such as, for example, avoiding the shirt pull-out effect and the like, is thus advantageously retained from the user's perspective.
Gegenüber einer herkömmlichen Synchronmechanik besonders ist hingegen, dass auch das als Kraftspeicherelement ausgebildete Speicherglied während des nach hinten Verschwenkens aufgrund der sich dabei immer mehr aufbauenden Vorspannung eine elastische Verformung erfährt und somit ebenfalls einen gewissen Bewegungsablauf beschreibt. Vorteilhafte Ausgestaltungen und Weiterbildungen ergeben sich aus den weiteren Unteransprüchen sowie aus der Beschreibung unter Bezugnahme auf die Figuren der Zeichnung.Compared to a conventional synchronous mechanism, on the other hand, it is special that the storage element designed as a force storage element also undergoes elastic deformation during pivoting backwards due to the increasing build-up of preload and thus also describes a certain movement sequence. Advantageous refinements and developments result from the further subclaims and from the description with reference to the figures of the drawing.
Entsprechend der Definition in den Ansprüchen, wird die Übersetzung neben dem ersten gelenkigen Drehpunkt auch einen zweiten gelenkigen Drehpunkt aufweisen, die Teil der kinematischen Kette sind. Hierdurch lässt sich der Rückenlehnenträger gegenüber zwei unterschiedlichen Armen oder Schenkeln des Speicherglieds verschwenkbar auslegen, wobei einer dieser Schenkel beispielsweise den Sitzträger der Trageinrichtung bilden kann.According to the definition in the claims, in addition to the first articulated pivot point, the translation will also have a second articulated pivot point, which are part of the kinematic chain. As a result, the backrest support can be designed to be pivotable relative to two different arms or legs of the storage element, one of these legs being able to form the seat support of the carrying device, for example.
Entsprechend der Definition in den Ansprüchen, wird das flexibel-elastische Speicherglied mindestens zwei Drehpunkte der kinematischen Kette abbilden bzw. das Speicherglied wenigstens zwei virtuelle Drehpunkte umfassen. Hierbei ist das Speicherglied beispielsweise derart flexibel ausgebildet, dass Beaufschlagungen des Stuhls durch Aufnahme einer sich setzenden Person in elastische Materialverformungen des Speicherglieds umgesetzt werden, die sich mechanisch in Drehungen um lediglich virtuell vorhandene Drehpunkte umgedeutet werden können. Diese virtuellen Drehpunkte sind entlang der Struktur des Speicherglieds angeordnet, ihre Aneinanderreihung mit den realen gelenkigen Drehpunkten der Übersetzung bildet einen Polygonzug und setzt sich mit den gelenkigen Drehpunkten der Übersetzung zu der kinematischen Kette zusammen.According to the definition in the claims, the flexible-elastic storage element will represent at least two pivot points of the kinematic chain or the storage element will comprise at least two virtual pivot points. In this case, the storage element is, for example, designed to be flexible in such a way that loads on the chair can be converted into elastic material deformations of the storage element by a person sitting down, which can be mechanically reinterpreted as rotations around only virtual pivot points. These virtual fulcrums are arranged along the structure of the storage element, their alignment with the real articulated pivots of the translation forms a polygon and is combined with the articulated pivots of the translation to form the kinematic chain.
Entsprechend der Definition in den Ansprüchen, ist die Übersetzung mit einer Sitzbasis gekoppelt. Die Übersetzung stellt somit eine Kraftumlenkung zwischen Rückenlehnenträger, Sitzträger und Sitzbasis dar und weist dazu einen ersten und einen zweiten Drehpunkt auf, von welchen zumindest der wenigstens eine gelenkige Drehpunkt der Übersetzung mit der Sitzbasis gekoppelt ist und relativ zu dieser fest angeordnet ist. Weiter wird die Übersetzung einen ersten virtuellen und einen zweiten virtuellen Drehpunkt aufweisen, welche von dem Speicherglied umfasst sind, dabei sind das wenigstens eine gelenkigen Drehpunkt mit einem an dem Speicherglied angeordneten zweiten gelenkigen Drehpunkt über einen ersten Lenker und die beiden virtuellen Drehpunkte miteinander über einen zweiten Lenker gekoppelt, wobei der erste Lenker fest mit dem Rückenlehnenträger verbunden oder integral mit dem Rückenlehnenträger ausgebildet ist. Hierdurch kann es sich also um einen viereckartigen, insbesondere parallelogrammartigen Aufbau der Übersetzung mit je einem an der Sitzbasis und an dem Sitzträger fixen gelenkigen Drehpunkt handeln. Insbesondere kommt die Übersetzung ohne Schiebegelenk oder Kulissenführung aus und ist somit kulissenfrei. Auf diese Weise wird mit sehr schlankem Design der Bewegungsablauf einer Synchronmechanik realisiert.As defined in the claims, the translation is coupled to a seat base. The translation thus represents a deflection of force between the backrest support, seat support and seat base and for this purpose has a first and a second pivot point, at least of which the at least one articulated pivot point of the translation is coupled to the seat base and is arranged fixedly relative thereto. Furthermore, the translation will have a first virtual and a second virtual pivot point, which are included in the storage element, in this case the at least one articulated pivot point with a second articulated pivot point arranged on the storage element via a first link and the two virtual pivot points with one another via a second Handlebar coupled, wherein the first link is fixed to the backrest support or integrally formed with the backrest support. This can therefore be a quadrangular, in particular parallelogram-like structure of the translation, each with an articulated pivot point fixed to the seat base and to the seat support. In particular, the translation does not require a sliding joint or a link guide and is therefore free of a link. In this way, the movement sequence of a synchronous mechanism is realized with a very slim design.
Außerdem kann in einer weiteren vorteilhaften Ausführung, die einen gleichen Aufbau der Übersetzung aufweist, der Rückenlehnenträger an dem wenigstens einen gelenkigen Drehpunkt bezüglich der Sitzbasis drehbar gelagert sein, und das Speicherglied bzw. der mit diesem verbundene Sitzträger an einem freien Ende entweder mit dem zweiten gelenkigen Drehpunkt versehen sein, an welchem dieser mit dem Rückenlehnenträger drehbar verbunden ist, oder mit dem Rückenlehnenträger insbesondere über einen Steg, flexibel verbunden sein. In letzterem Fall bildete die Verbindung des Sitzträgers an dem Speicherglied einen dritten virtuellen Drehpunkt und die Übersetzung weist dann nur noch einen "echten" gelenkigen Drehpunkt auf, nämlich den bereits zuvor erwähnten wenigstens einen.In addition, in a further advantageous embodiment, which has the same structure of the translation, the backrest support can be rotatably mounted at the at least one articulated pivot point with respect to the seat base, and the storage element or the seat support connected to it can be articulated at one free end either with the second articulated one Be provided pivot point at which it is rotatably connected to the backrest support is, or be flexibly connected to the backrest support, in particular via a web. In the latter case, the connection of the seat support to the storage element formed a third virtual pivot point and the translation then has only one "real" articulated pivot point, namely the at least one already mentioned above.
In einer bevorzugten Ausbildung des Stuhls, kann, wie bereits zuvor angedeutet, das flexibel-elastische Speicherglied mit dem Sitzträger verbunden, an diesen angeformt oder mit diesem einstückig ausgebildet vorgesehen sein. Insbesondere kann der Sitzträger des Stuhls einen Teil des Speicherglieds bilden und durch seine elastische Ausbildung einen Teil des Kraftspeichers bilden, der wiederum die Rückstellkraft aufbaut und zur Verfügung stellt.In a preferred embodiment of the chair, as already indicated above, the flexible-elastic storage element can be connected to the seat support, molded onto it or provided in one piece with it. In particular, the seat support of the chair can form part of the storage element and, due to its elastic design, form part of the energy storage device, which in turn builds up and provides the restoring force.
Hierbei kann das Speicherglied der Übersetzung mit einem elastisch verformbaren Kunststoffmaterial, insbesondere einem faserverstärkten Kunststoff, ausgebildet sein, der an dem Speicherglied in geeigneter Weise die flexibel elastische Eigenschaft zeigt.Here, the storage member of the translation can be formed with an elastically deformable plastic material, in particular a fiber-reinforced plastic, which shows the flexibly elastic property on the storage member in a suitable manner.
In einer bevorzugten Ausführungsform kann das Speicherglied mit dem Sitzträger eine gebogene Form aufweisen, die in Ruhestellung des Stuhls in etwa einen spitzen Winkel zwischen 1° und 40, bevorzugt zwischen 10° und 30°, insbesondere von 25° einschließenIn a preferred embodiment, the storage member with the seat support can have a curved shape which, when the chair is at rest, enclose an acute angle of between 1 ° and 40 °, preferably between 10 ° and 30 °, in particular 25 °
Beispielsweise zur beabsichtigten kurzfristigen Abstützung einer auf dem Stuhl sitzenden Person kann an der Trageinrichtung an zumindest einer Stuhlseite wenigstens ein Armlehnenträger, insbesondere an jeder Stuhlseite jeweils ein Armlehnenträger angeordnet sein, welcher bzw. welche mit dem Sitzträger und/oder dem Rückenlehnenträger verbunden sein können. Die Armlehnenträger können dabei auch untereinander verbunden sein, beispielsweise kann eine gemeinsame Verbindung unterhalb des Sitzträgers geführt und mit diesem zusätzlich verbunden sein. Der jeweilige Armlehnenträger kann zum Tragen eines Armlehnenkörpers oder lediglich eines Armlehnenpolsters vorgesehen sein. Alternativ kann der Armlehnenträger auch direkt einen Armlehnenkörper bilden.For example, for the intended short-term support of a person sitting on the chair, at least one armrest support can be arranged on the support device on at least one chair side, in particular one armrest support on each chair side, which can be connected to the seat support and / or the backrest support. The armrest supports can also be connected to one another, for example, a common connection can be made underneath the seat support and additionally connected to it. The respective armrest support can be provided for carrying an armrest body or just an armrest cushion. Alternatively, the armrest support can also directly form an armrest body.
Gemäß einer vorteilhaften Ausführungsform weist die Übersetzung einen ersten Anschlag auf, welcher einen Verschwenkbereich des Sitzträgers und Rückenlehnenträgers in der aufrechten Position derart beschränkt, dass bei Erreichen des Anschlags eine den Rückenlehnenträger und den Sitzträger in der aufrechten Position an dem Anschlag haltende Vorspannung des Speicherglieds anliegt. Insbesondere steht die Rückenlehne in dieser Position aufrecht. Auf diese Weise ist stets eine definierte Position des Rückenlehnenträgers gewährleistet, auch wenn der Stuhl unbesetzt ist. Ein bevorzugter Ort zur Anordnung des Anschlags kann zum Beispiel in der Nähe des zweiten gelenkigen Drehpunkts, so vorhanden, sein, so dass der Anschlag sich nahe an dem Sitzträger befindet. Auf diese Weise würde etwa ein mit dem Anschlag in Kontakt stehender Lenker nicht mit übermäßig starken Momenten belastet.According to an advantageous embodiment, the translation has a first stop, which limits a pivoting range of the seat support and backrest support in the upright position such that when the stop is reached, the backrest support and the seat support is in the upright position against the stop-holding bias of the storage member. In particular, the backrest is upright in this position. In this way, a defined position of the backrest support is always guaranteed, even when the chair is not occupied. A preferred location for arranging the stop can be, for example, in the vicinity of the second articulated pivot point, so that the stop is close to the seat support. In this way, for example, a handlebar in contact with the stop would not be subjected to excessive moments.
In einer anderen vorteilhaften Ausführungsform weist die Übersetzung einen zweiten Anschlag auf, welcher den Verschwenkbereich des Sitzträgers und Rückenlehnenträgers in einer maximalen verschwenkten Position begrenzt und/oder die Übersetzung kann mit einem Sperrelement versehen sein, welches Sitzträgers und Rückenlehnenträgers in einer wählbaren verschwenkten Position gegen wenigstens eine Bewegungsrichtung festlegt. So kann zum einen vermieden werden, dass der Verschwenkbereich nach hinten einen maximalen Verschwenkwinkel beispielsweise in der Größenordnung von 20° überschreitet, zum anderen kann die Dynamik des Stuhls gewünschtenfalls auch für einen wählbaren Zeitraum eingeschränkt werden. Diese Einschränkung bzw. die Festlegung kann sich auch auf beide Bewegungsrichtungen beziehen.In another advantageous embodiment, the translation has a second stop, which limits the pivoting range of the seat support and backrest support in a maximum pivoted position and / or the translation can be provided with a locking element, which seat support and backrest support in a selectable pivoted position against at least one Determines the direction of movement. In this way, on the one hand, it can be avoided that the swiveling range to the rear exceeds a maximum swiveling angle, for example of the order of 20 °, and on the other hand, if desired, the dynamics of the chair can also be restricted for a selectable period of time. This restriction or the definition can also refer to both directions of movement.
Gemäß einer bevorzugten Ausführungsform kann der zweite gelenkigen Drehpunkt oder ein dritter virtueller Drehpunkt in einem hinteren Bereich und der zweite virtuelle Drehpunkt in einem vorderen Bereich des Sitzträgers angeordnet sein, wobei der zweite Lenker eine größere Länge und/oder eine größere Neigung als der erste Lenker aufweist. Auf diese Weise wird der Sitzträger bei einem Verschwenken aus der aufrechten in die nach hinten verschwenkte Position in dem vorderen Bereich stärker angehoben als in dem hinteren Bereich, sodass der Sitzträger leicht nach hinten zu verschwenkt wird.According to a preferred embodiment, the second articulated pivot point or a third virtual pivot point can be arranged in a rear region and the second virtual pivot point in a front region of the seat carrier, the second link having a greater length and / or a greater inclination than the first link . In this way, when pivoting from the upright to the rearwardly pivoted position in the front region, the seat carrier is raised more than in the rear region, so that the seat carrier is pivoted slightly backwards.
Bei einer bevorzugten Weiterbildung sind die Länge und/oder Neigung des ersten und zweiten Lenkers jeweils derart vorgesehen, dass ein Verhältnis eines Verschwenkwinkels des Rückenlehnenträgers zu einem Verschwenkwinkel des Sitzträgers in der nach hinten verschwenkten Position 2 zu 1 bis 4 zu 1, insbesondere 3 zu 1, beträgt. Beispielsweise ist in diesem Zusammenhang der Rückenlehnenträger um 21° nach hinten verschwenkbar, während der Sitzträger um 7° nach hinten verschwenkbar ist.In a preferred development, the length and / or inclination of the first and second links are each provided such that a ratio of a pivoting angle of the backrest support to a pivoting angle of the seat support in the rearwardly pivoted position is 2 to 1 to 4 to 1, in particular 3 to 1 , is. For example in this context, the backrest support can be pivoted backwards by 21 °, while the seat support can be pivoted backwards by 7 °.
Eine unabhängige Höhenpositionierung der Sitzposition gestattet an dem erfindungsgemäßen Stuhl zum Beispiel eine Weiterbildung, bei der mit dem Speicherglied eine manipulierbare Höhenverstelleinrichtung verbunden ist, welche über eine im Bereich des Sitzträgers angeordnete und ergreifbare Handhabe betätigbar ist. Die ist in der Lage, auch bei besetztem Stuhl eine Höhenverstelleinrichtung, etwa in Form einer Gasfeder, nach jeweiligem Wunsch zu manipulieren.An independent height positioning of the sitting position allows, for example, a further development in the chair according to the invention, in which a manipulable height adjustment device is connected to the storage member, which can be actuated via a handle which is arranged and can be gripped in the region of the seat support. It is able to manipulate a height adjustment device, for example in the form of a gas spring, as required, even when the chair is occupied.
Um eine entkoppelte Bewegung der Sitzfläche gegenüber dem Sitzträger und damit bezüglich des Rückenlehnenträgers unterschiedlich tiefe, einstellbare Sitzpositionen zu gestatten kann bei einer weiteren Ausführung an dem Sitzträger ein Sitzelement angeordnet sein, welches fixierbar oder fixiert vorgesehen ist oder durch ein Führungsmittel entlang des Sitzträgers verschieblich vorgesehen ist. Ein solches Führungsmittel kann etwa eine an dem Sitzträger (2) angeordnete Kulisse oder dergleichen Führungsschiene gebildet sein.In order to allow a decoupled movement of the seat surface relative to the seat support and thus adjustable, different depth positions with respect to the backrest support, a seat element can be arranged on the seat support, which is provided fixable or fixed or is slidably provided along the seat support by a guide means . Such a guide means can be formed, for example, a link or similar guide rail arranged on the seat support (2).
Die obigen Ausgestaltungen und Weiterbildungen lassen sich, sofern sinnvoll, beliebig miteinander kombinieren. Weitere mögliche Ausgestaltungen, Weiterbildungen und Implementierungen der Erfindung umfassen auch nicht explizit genannte Kombinationen von zuvor oder im Folgenden bezüglich der Ausführungsbeispiele beschriebenen Merkmale der Erfindung. Insbesondere wird dabei der Fachmann auch Einzelaspekte als Verbesserungen oder Ergänzungen zu der jeweiligen Grundform der vorliegenden Erfindung hinzufügen.The above refinements and developments can, if appropriate, be combined with one another as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention described above or below with reference to the exemplary embodiments, which are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
Die vorliegende Erfindung wird nachfolgend anhand der in den schematischen Figuren der Zeichnung angegebenen Ausführungsbeispiele näher erläutert. Es zeigen dabei:
- Fig. 1
- eine ebene Seitenansicht eines ersten Ausführungsbeispiels eines Stuhls in einer aufrechten Position mit einer Übersetzung mit zwei gelenkigen Drehpunkten;
- Fig. 2
- eine ebene Seitenansicht eines nicht erfindungsgemäßen Stuhls in einer aufrechten Position mit einer Übersetzung mit nur einem gelenkigen Drehpunkt;
- Fig. 3
- eine ebene Seitenansicht des Stuhls aus der
Fig.1 mit an der Übersetzung zusätzlich erkennbaren virtuellen Drehpunkten; - Fig. 4
- eine perspektivische Seitenansicht eines Stuhls mit seiner Sitzbasis und einem Speicherglied, an welchem ein Sitzträger angeordnet ist;
- Fig. 5
- eine perspektivische Seitenansicht des Stuhls aus der
Fig.4 , an welchem ein Rückenlehnenträger mit dem Speicherglied verbunden ist; - Fig. 6
- eine perspektivische Seitenansicht des Stuhls aus der
Fig.5 , an welchem ein Sitzträger mit dem Speicherglied verbunden ist; - Fig. 7
- eine ebene Seitenansicht des Stuhls aus der
Fig.3 , mit der Tragreinrichtung einmal in der Ruheposition und einmal in der verschwenkten Position (strichliniert).
- Fig. 1
- a flat side view of a first embodiment of a chair in an upright position with a translation with two articulated pivot points;
- Fig. 2
- a flat side view of a chair not according to the invention in an upright position with a translation with only one articulated pivot;
- Fig. 3
- a flat side view of the chair from the
Fig. 1 with virtual pivot points recognizable by the translation; - Fig. 4
- a perspective side view of a chair with its seat base and a storage member on which a seat support is arranged;
- Fig. 5
- a perspective side view of the chair from the
Fig. 4 , on which a backrest support is connected to the storage member; - Fig. 6
- a perspective side view of the chair from the
Fig. 5 , on which a seat support is connected to the storage member; - Fig. 7
- a flat side view of the chair from the
Fig. 3 , with the carrying device once in the rest position and once in the pivoted position (dashed lines).
Die beiliegenden Figuren der Zeichnung sollen ein weiteres Verständnis der Ausführungsformen der Erfindung vermitteln. Sie veranschaulichen Ausführungsformen und dienen im Zusammenhang mit der Beschreibung der Erklärung von Prinzipien und Konzepten der Erfindung. Andere Ausführungsformen und viele der genannten Vorteile ergeben sich im Hinblick auf die Zeichnungen. Die Elemente der Zeichnungen sind nicht notwendigerweise maßstabsgetreu zueinander gezeigt.The accompanying figures of the drawing are intended to provide a further understanding of the embodiments of the invention. They illustrate embodiments and, in connection with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned result from the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.
In den Figuren der Zeichnung sind gleiche, funktionsgleiche und gleich wirkende Elemente, Merkmale und Komponenten - sofern nichts anderes ausgeführt ist - jeweils mit denselben Bezugszeichen versehen.In the figures of the drawing, elements, features and components that are the same, have the same function and have the same effect — unless otherwise stated — are each provided with the same reference symbols.
Sich zunächst den
In jeder der ebenen Seitenansichten der
An der Übersetzung 5 ist ein flexibel-elastisches Speicherglied 8 vorgesehen und eingerichtet, welches bei Beaufschlagung der Trageinrichtung 4 eine in die aufrechte Position rückstellende Kraft bereitstellt, außerdem bildet das flexibel-elastische Speicherglied 8 gemeinsam mit wenigstens einem ersten gelenkigen Drehpunkt 10 der Übersetzung 5 eine kinematische Kette 15.A flexible-
Die erwähnte kinematische Kette 15 ist das Merkmal des durch die Übersetzung 5 gebildeten Systems, das ein Getriebe darstellt und für die Übertragung von Bewegungen und Drehmomenten zuständig ist. Dies ist am besten anhand der
Weiter erkennt man bei den Stühlen 1 der
Demgegenüber erkennt man in der
Sich nun den
Teilweise aufgebaut ist der Stuhl 1 in der
Unter Aufbringen einer Vorspannung an dem Speicherglied 8 wird dieses in der
Bei dem nicht-erfindungsgemäßen Stuhl der Ausführung der
Weiter ist in den
Aus der
Die Übersetzung 5 des Speicherglieds 8 bestimmt dabei den Bewegungsablauf der Trageinrichtung mit dem Sitzträger 2 und dem Rückenlehnenträger 3 bei einem Verschwenken aus der aufrechten Position in eine nach hinten verschwenkte Position, wie sie gemeinsam in der
Nun wieder auf alle Figuren, insbesondere die
Beide Lenker 16 und 17 sind sowohl in der aufrechten Position, als in der nach hinten verschwenkten Position nach vorne geneigt, sodass eine Gewichtskraft einer auf dem Stuhl 1 sitzenden Person ein Rückstellmoment bewirkt und das als Kraftspeicherelement ausgebildete Speicherglied 8 somit lediglich gegen die Rückenlehnenkraft arbeiten muss. Die nach hinten verschwenkte Position wird erreicht, indem sich eine auf dem Stuhl 1 sitzende Person nach hinten lehnt und somit eine Rücklehnkraft auf den Rückenlehnenträger 3 aufbringt, welche eine Federkraft des Speicherglieds 8überwindet.Both
Die durch den mit einem Sitzpolster 32 versehenen Sitzträger 2 gebildete Sitzfläche ist insgesamt etwas angehoben und zusätzlich ebenfalls verschwenkt, allerdings im Vergleich zu dem Rückenlehnenträger 3 in deutlich geringerem Maße. Das Speicherglied 8 ist, wie man ebenfalls am besten in der
Trotz eines mit den Ausführungen der Figuren möglichen großen Schwenkbereichs sind sämtliche sichtbaren Komponenten des Stuhls 1, insbesondere der Rückenlehnenträger 3, der erste Lenker 13, die Sitzbasis 9 und der zweite Lenker 14 sowie der Sitzträger 2, sehr schlank ausgebildet. Gleiches gilt für das Speicherglied 8. Darüber hinaus sind keine weiteren Komponenten zwischen dem Sitzträger 2 und der Sitzbasis 9 bzw. zwischen dem Sitzträger 2 und dem Rückenlehnenträger 3 angeordnet. Auf diese Weise entsteht insgesamt ein enorm schlankes Design, ohne dass im Vergleich zu einer herkömmlichen Synchronmechanik Funktionalität verloren geht.Despite a large swivel range possible with the designs of the figures, all visible components of the
Nicht gezeigt ist in den Zeichnungsfiguren ein den Verschwenkbereich des Sitzträgers 2 und Rückenlehnenträgers 3 in der aufrechten Position beschränkender erster Anschlag sowie ein den Verschwenkbereich des Sitzträgers 2 und Rückenlehnenträgers 3 in der verschwenkten Position beschränkender zweiter Anschlag. Dieser sind im Bereich des ersten oder, so vorhanden, zweiten gelenkigen Drehpunktes 10, 11 in Form von Anschlagkeilen vorgesehen, welche sich in der aufrechten Position und in der verschwenkten Position an jeweils geeigneten Punkten abstützen.Not shown in the drawing figures is a first stop restricting the pivoting range of the
Die Anschläge sind derart angeordnet und ausgelegt, dass etwa bei Erreichen des ersten Anschlags nach wie vor eine den Rückenlehnenträger 3 und den Sitzträger 2 in der aufrechten Position haltende Vorspannung des Speicherglieds 8 anliegt. Auf diese Weise ist beispielsweise auch in der aufrechten Position eine definierte Stellung der Übersetzung 5, des Sitzträgers 2 und des Rückenlehnenträgers 3 gewährleistet.The stops are arranged and designed such that, when the first stop is reached, there is still a pretension of the
Obwohl die vorliegende Erfindung anhand bevorzugter Ausführungsbeispiele vorstehend vollständig beschrieben wurde, ist sie darauf nicht beschränkt, sondern auf vielfältige Art und Weise im Rahmen der Patentansprüche modifizierbar.Although the present invention has been completely described above on the basis of preferred exemplary embodiments, it is not restricted to these but can be modified in a variety of ways within the scope of the patent claims.
- 11
- Stuhlchair
- 22nd
- SitzträgerSeat support
- 33rd
- RückenlehnenträgerBackrest support
- 44th
- TrageinrichtungCarrying device
- 55
- Übersetzungtranslation
- 88th
- SpeichergliedStorage member
- 99
- SitzbasisSeat base
- 1010th
- erster gelenkiger Drehpunktfirst pivot point
- 1111
- zweiter gelenkiger Drehpunktsecond pivot point
- 1212th
- weiterer bzw. erster virtueller DrehpunktAnother or first virtual pivot point
- 1313
- weiterer bzw. zweiter virtueller Drehpunktanother or second virtual pivot point
- 1414
- weiterer bzw. dritter virtueller Drehpunktanother or third virtual pivot point
- 1515
- kinematische Kettekinematic chain
- 1616
- erster Lenkerfirst driver
- 1717th
- zweiter Lenkersecond handlebar
- 1818th
- RahmenteilFrame part
- 18a-18d18a-18d
- RahmenabschnitteFrame sections
- 1919th
- AusnehmungRecess
- 2020
- oberer Schenkelupper leg
- 2121st
- unterer Schenkellower leg
- 2222
- Stegweb
- 2525th
- SperrelementLocking element
- 2626
- Rollerole
- 2727
- HöhenverstelleinrichtungHeight adjustment device
- 3030th
- RückenlehnenrahmenBackrest frame
- 3131
- AusnehmungRecess
- 3232
- SitzpolsterSeat pad
- 3535
- StandfußPedestal
Claims (12)
- Chair (1), in particular a conference chair or office chair, having a seat base (9) on which a carrier device (4) of the chair (1) is arranged, wherein:- the carrier device (4) comprises at least one seat carrier (2) and at least one backrest carrier (3),- the carrier device (4) is provided with a transmission arrangement (5) that couples the seat carrier (2) to the backrest carrier, said transmission arrangement rendering it possible for the backrest carrier (3) and the seat carrier (2) to pivot with a predetermined movement sequence between an upright position and a position that is pivoted rearwards,- a flexible-elastic storage element (8) is provided and configured on the transmission arrangement (5), said storage element providing a returning force into the upright position when the carrier device (4) is influencedthe flexible elastic storage element (8) together with at least one first articulated rotary point (10) of the transmission arrangement (5) forms a kinematic chain (15), wherein the at least one articulated rotary point (10) of the transmission arrangement (5) is coupled to the seat base (9) and is arranged fixed relative to said seat base and wherein the transmission arrangement (5) comprises a first virtual rotary point and a second virtual rotary point (12, 13), which are encompassed by the storage element (8), wherein the at least one articulated rotary point (10) is coupled to a second articulated rotary point (11), which is arranged on the storage element (8), via a first connecting link (16) and the two virtual rotary points (12, 13) are coupled to one another via a second connecting link (17), wherein the first connecting link (16) is fixedly connected to the backrest carrier (3) or is embodied integrally with the backrest carrier (3).
- Chair according to Claim 1,
wherein the backrest carrier (3) is rotatably mounted on the at least one articulated rotary point (10) in relation to the seat base (9) and the storage element (8) or the seat carrier (2) that is connected to said storage element is provided on a free end either with the second articulated rotary point (11) on which this storage element or seat carrier is rotatably connected to the backrest carrier (3), or is flexibly connected to the backrest carrier (3), in particular via a connecting piece (17). - Chair according to Claim 1 or 2,
wherein the flexible elastic storage element (8) is connected to the seat carrier (2), is moulded on to said seat carrier or is embodied as a single part with said seat carrier. - Chair according to any one of the preceding claims,
wherein the storage element (8) of the transmission arrangement (5) is embodied with an elastic deformable synthetic material, in particular a fibre-reinforced synthetic material. - Chair according to any one of the preceding claims,
wherein the storage element (8) comprises a curved shape that in the resting position of the chair (1) includes an approximately acute angle between 1° and 40°, preferably between 10° and 30°, in particular of 25°. - Chair according to any one of the preceding claims,
wherein at least one armrest carrier (18) is arranged on the carrier device (4) on at least one chair side, in particular an armrest carrier (18) is arranged respectively on each chair side, said armrest carrier or carriers being connected to the seat carrier (2) and/or to the backrest carrier (3). - Chair according to any one of the preceding claims,
wherein the transmission arrangement (5) comprises a first stop, which limits a pivoting range of the seat carrier (2) and backrest carrier (3) in the upright position in such a manner that when the stop is reached, a pre-tension of the storage element (8) is present that holds the backrest carrier (3) and the seat carrier (2) in the upright position on the stop. - Chair according to any one of the preceding claims,
wherein the transmission arrangement (5) comprises a second stop, which limits the pivoting range of the seat carrier (2) and backrest carrier (3) in a maximum pivoted position and/or is provided with a blocking element (21), which fixes the seat carrier (2) and backrest carrier (3) in a selectable pivoted position against at least one movement direction. - Chair according to any one of the preceding claims,
wherein the length and/or incline of the first and second connecting link (16, 17) respectively are provided in such a manner that a ratio of a pivoting angle of the backrest carrier (3) to a pivoting angle of the seat carrier (2) in the pivoted rearwards position is 2 to 1 up until 4 to 1, in particular 3 to 1. - Chair according to any one of the preceding claims,
wherein a manipulatable height adjusting device (27) is provided and configured, which may be actuated via a handle that is arranged in the region of the seat carrier (2) and may be gripped; and/or
wherein a seat element is arranged on the seat carrier (2) and said seat element may be fixed or is fixed or is provided so that it may be displaced along the seat carrier (2) by means of a set of guiding means. - Method for producing a chair (1), in particular a chair according to any one of the preceding claims, having the steps:providing a carrier device (4) having a seat carrier (2), a backrest carrier (3) and a transmission arrangement (5) that couples the seat carrier (2) to the backrest carrier (3), said transmission arrangement rendering it possible for the backrest carrier (3) and the seat carrier (2) to pivot with a predetermined movement sequence between an upright position and a position that is pivoted rearwards;coupling a storage element (8) that is provided and configured on the transmission arrangement (5) to the carrier device (4) in such a manner that the predetermined movement sequence is rendered possible and a returning force in the upright position is provided by means of the storage element (8), wherein a kinematic chain (14) is formed by means of the flexible elastic storage element (8) with at least one first articulated rotary point (10) of the transmission arrangement (5),wherein the at least one articulated rotary point (10) of the transmission arrangement (5) is coupled to the seat base (9) and is fixedly arranged relative to said seat base and wherein the transmission arrangement (5) comprises a first virtual rotary point and a second virtual rotary point (12, 13), which are encompassed by the storage element (8), wherein the at least one articulated rotary point (10) is coupled to a second articulated rotary point (11), which is arranged on the storage element (8), via a first connecting link (16) and the two virtual rotary points (12, 13) are coupled to one another via a second connecting link (17), wherein the first connecting link (16) is fixedly connected to the backrest carrier (3) or is embodied integrally with the backrest carrier (3).
- Method according to Claim 11,
wherein the storage element (8) comprises at least in a planar projection a curved shape having two limbs (20, 21) that are connected to the backrest carrier (3) at respectively one articulated rotary point (10, 11).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017209041.3A DE102017209041A1 (en) | 2017-05-30 | 2017-05-30 | Chair, in particular conference or office chair and method for producing a chair |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3409144A1 EP3409144A1 (en) | 2018-12-05 |
EP3409144B1 true EP3409144B1 (en) | 2020-07-08 |
Family
ID=62165448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18172103.6A Active EP3409144B1 (en) | 2017-05-30 | 2018-05-14 | Chair, specifically conference or office chair and method of producing such a chair |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3409144B1 (en) |
DE (1) | DE102017209041A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3622860A1 (en) * | 2018-09-17 | 2020-03-18 | Sedus Stoll AG | Swivel chair, especially conference or office swivel chair |
EP3927215A4 (en) | 2019-02-21 | 2023-03-15 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
IT202000002332A1 (en) * | 2020-02-06 | 2021-08-06 | Donati Spa | SWINGING MECHANISM FOR A CHAIR OR ARMCHAIR |
DE102020103317B4 (en) | 2020-02-10 | 2024-05-16 | Angela Eberhardt | Three-dimensionally movable swivel or office chair |
US11617444B2 (en) | 2020-03-02 | 2023-04-04 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
DE102020110707A1 (en) * | 2020-04-20 | 2021-10-21 | Bock 1 Gmbh & Co. Kg | Seating |
US11812870B2 (en) | 2021-02-10 | 2023-11-14 | Steelcase Inc. | Body support structure |
DE102021126162A1 (en) | 2021-10-08 | 2023-04-13 | Bock 1 Gmbh & Co. Kg | Mechanism for a piece of seating furniture, in particular for an office chair |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29704906U1 (en) * | 1997-03-18 | 1997-05-22 | Interstuhl Büromöbel GmbH & Co. KG, 72469 Meßstetten | Chair, especially office chair |
US6709058B1 (en) | 1999-04-09 | 2004-03-23 | Humanscale Corp. | Ergonomic chair |
DE10106792A1 (en) * | 2001-02-12 | 2002-08-14 | Interstuhl Bueromoebel Gmbh | seating |
WO2008000295A1 (en) * | 2006-06-30 | 2008-01-03 | Eckhard Hansen | Seating |
JP2013132403A (en) * | 2011-12-27 | 2013-07-08 | Kokuyo Co Ltd | Chair |
DE102016217503A1 (en) | 2016-09-14 | 2018-03-15 | Sedus Stoll Ag | Chair, in particular conference or office chair, method for producing a chair |
-
2017
- 2017-05-30 DE DE102017209041.3A patent/DE102017209041A1/en not_active Withdrawn
-
2018
- 2018-05-14 EP EP18172103.6A patent/EP3409144B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102017209041A1 (en) | 2018-12-06 |
EP3409144A1 (en) | 2018-12-05 |
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