EP3576573A1 - Chair - Google Patents

Chair

Info

Publication number
EP3576573A1
EP3576573A1 EP18706657.6A EP18706657A EP3576573A1 EP 3576573 A1 EP3576573 A1 EP 3576573A1 EP 18706657 A EP18706657 A EP 18706657A EP 3576573 A1 EP3576573 A1 EP 3576573A1
Authority
EP
European Patent Office
Prior art keywords
backrest
chair
rotation
chair according
axes
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.)
Granted
Application number
EP18706657.6A
Other languages
German (de)
French (fr)
Other versions
EP3576573B1 (en
Inventor
Peter Horn
Ruarc O'boyle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunon Furniture Manufacturing Co Ltd
Original Assignee
Zhejiang Sunon Furniture Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunon Furniture Manufacturing Co Ltd filed Critical Zhejiang Sunon Furniture Manufacturing Co Ltd
Publication of EP3576573A1 publication Critical patent/EP3576573A1/en
Application granted granted Critical
Publication of EP3576573B1 publication Critical patent/EP3576573B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/405—Support for the head or the back for the back with double backrests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—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
    • A47C1/03279—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 of torsion type
    • 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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A47C7/444—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs of torsion type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • A47C7/4454—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs of torsion type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/48—Support for the head or the back for the back of freely-rotatable type

Definitions

  • the invention relates to a chair, in particular a
  • Office chair with a sideways pivoting backrest.
  • An office chair as exemplified in Figs. 1 and 8, is a rotatable chair with a
  • the office chair is mounted on rollers 2, which are attached to a so-called base 1, which has five arms in the example shown.
  • a gas spring 3 is arranged, with which the seat height of the office chair can be adjusted.
  • a chair mechanism 4 on which the backrest 6, the seat 7, and armrests 5 are mounted.
  • the chair mechanism 4 may, for example, as a so-called Synchronous mechanism be executed, which couples the backrest 6 with the seat surface 7, wherein a tilt of the backrest
  • Fig. 6 shows a typically slightly lower inclination of the seat surface
  • the backrest 6 is held by a return element such as a spring or the like in the upright position or moved back into the upright position when the backrest 6 has been deflected from the upright position.
  • a return element such as a spring or the like
  • both the restoring element and the backrest 6 are force-free in the upright position.
  • the backrest 6 is to be pivotally mounted on two mutually parallel axes of rotation. This results in a comparison with known
  • the backrest 6 can deform by the selected type of storage during the pivoting movement, whereby a three-dimensional movement of the backrest 6 and the generation of a
  • the axes of rotation 10 may for example be attached to a common base plate 9 and the base plate. 9 in turn, at a backrest 6 with the
  • Seat 7 coupling chair mechanism 4 may be attached, for example, detachable. This would also make it possible to use commercially available chair mechanisms 4 in which the attachment of the backrest 6 to two joints is not actually provided.
  • the axes of rotation 10 enclose an acute angle with a horizontal plane.
  • the joints 8 are operatively connected to one return element 12 each.
  • Backrest 6 as explained above, generates a restoring force which counteracts a lateral deflection of the backrest 6, it may be advantageous, this
  • additional restoring elements 12 or reinforce. It can further be provided that the return elements 12 act in the opposite direction, i. the one return element 12 counteracts a deflection to the left and the other return element counteracts a deflection to the right.
  • the return elements 12 are prestressed in the upright position of the backrest 6. This ensures that the restoring force, which counteracts a lateral deflection of the backrest 6, is reinforced.
  • the seat back 6 has a frame which has an interruption in the region between the joints 8.
  • Breakage causes the backrest 6 can deform easily elastic in a lateral deflection and generated by such a deformation an additional massage effect on the back of the user.
  • Such massage effects are highly desirable because they reduce user fatigue and the development of back pain
  • At least one elastic element 14 is arranged in the interruption.
  • this elastic element allows, within certain limits, an elastic deformation as described above, it also reinforces that of a lateral deflection
  • elastic element serve on the one hand to produce the visual impression of a non-interrupted frame and on the other hand, for example, in the attachment of a
  • such elastic member may be a two-component member made of different elastic, i. be difficult to deform plastic materials.
  • two strips of material of a first plastic which is relatively hard and therefore difficult to deform
  • Material strips can serve to the elastic element 14 left and right of the interruption of the frame of the
  • the seat back has a frame, which in the region between the joints a
  • At least one elastic element 14 may be arranged.
  • the interruption is through the
  • filled elastic element 14 It may be, for example, a silicone rubber, polyurethane (PU) or the like rubber-elastic materials.
  • a plurality of elastic elements 14 may be arranged in the interruption, the two
  • FIG. 3 shows a chair mechanism 4, at the rear end of the joints 8 are arranged.
  • FIGS. 4 and 5 show the joint arrangement free and from two different viewing directions.
  • a base plate 9 is mounted in this particular embodiment, are attached to the two axes of rotation 10 on one side.
  • Rotary axis 10 is seated a mounting block 11, which is thereby rotatable about the axis of rotation 10.
  • the two mounting blocks 11 each have on their underside a recess, in each of which a return element 12 is arranged.
  • the return elements 12 are designed as torsion springs, each with a first leg on her
  • Torsionally called torsion springs are mechanical energy stores that absorb a torque at an angle / rotational movement on the legs, which they release again when relaxing.
  • a stop element 13 is arranged between the two axes of rotation 10, on which the two return elements 12 are supported in each case with a second leg. A twist of one
  • Mounting block 11 on the associated axis of rotation 10 thus results in that the associated return element 12 builds up a restoring force, the rotation of the
  • Fixing block 11 is opposite. From the
  • the return elements 12 may be biased in the upright position of the backrest.
  • the bias voltage can also be adjustable. It is understood that the joints 8 can also be designed differently than in the embodiment shown here.
  • base plate 9 axes of rotation 10
  • mounting blocks 11 and return elements 12 is by no means mandatory.
  • the movable part of a joint 8 may also be part of the backrest 6.
  • Fig. 6 shows a three-dimensional representation of
  • the base plate 9 is in this case a sheet metal bent part whose upper edge is formed so that the base plate 9 can be hung in the chair mechanism 4 at the rear. This connection is secured between the Base plate 9 and the chair mechanism 4 by a (not shown) locking screw which is inserted into a threaded bore 15 which is provided on the underside of the base plate 9 for this purpose.
  • the joints 8 have no separate mounting blocks in this embodiment, which are rotatable about the axes of rotation 10. Instead, the axes of rotation 10 are directly connected to the two lower foothills of the backrest 6. For this purpose, the lower extensions of the backrest 6
  • two spring retaining clips 18 are arranged on the rotary axes 10.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

The invention relates to a chair, in particular an office chair, comprising a seat surface (7) and a laterally pivotable backrest (6), wherein the backrest (6) is secured to two joints (8), which have mutually parallel axes of rotation (10).

Description

Stuhl  chair
Die Erfindung betrifft einen Stuhl, insbesondere einen The invention relates to a chair, in particular a
Bürostuhl, mit einer seitwärts schwenkbaren Rückenlehne. Office chair, with a sideways pivoting backrest.
Ein Bürostuhl, wie er beispielhaft in den Fig. 1 und 8 dargestellt ist, ist ein drehbarer Stuhl mit einer An office chair, as exemplified in Figs. 1 and 8, is a rotatable chair with a
Sitzfläche 7 und einer Rückenlehne 6, der außerdem Armlehnen 5 aufweisen kann. Der Bürostuhl ist auf Rollen 2 gelagert, die an einem sogenannten Fußkreuz 1 befestigt sind, das im gezeigten Beispiel fünf Arme aufweist. In der Mitte des Fußkreuzes 1 ist eine Gasdruckfeder 3 angeordnet, mit der sich die Sitzhöhe des Bürostuhls verstellen lässt. Auf dem oberen Ende der Gasdruckfeder 3 lagert eine Stuhlmechanik 4, an der die Rückenlehne 6, die Sitzfläche 7, und Armstützen 5 befestigt sind. Seat 7 and a backrest 6, which may also have armrests 5. The office chair is mounted on rollers 2, which are attached to a so-called base 1, which has five arms in the example shown. In the middle of the foot 1, a gas spring 3 is arranged, with which the seat height of the office chair can be adjusted. On the upper end of the gas spring 3, a chair mechanism 4, on which the backrest 6, the seat 7, and armrests 5 are mounted.
Aus ergonomischen Gründen gehen die Bestrebungen seit vielen Jahren dahin, die Bestandteile eines Bürostuhls absolut und relativ zueinander so beweglich wie möglich auszuführen, um dem Benutzer ein möglichst dynamisches Sitzen zu For ergonomic reasons, efforts have been made for many years to make the components of an office chair absolutely and relatively movable relative to each other as possible in order to give the user the most dynamic possible sitting
ermöglichen, so dass ein Maximum von körperlicher Bewegung auch im Sitzen erfolgen kann. Hierdurch wird die allow so that a maximum of physical exercise can be done while sitting. This will be the
Durchblutung gefördert und Fehlhaltungen werden vermieden. Promotes blood circulation and bad postures are avoided.
Die Stuhlmechanik 4 kann beispielsweise als eine sogenannte Synchronmechanik ausgeführt sein, die die Rückenlehne 6 mit der Sitzfläche 7 koppelt, wobei eine Neigung der RückenlehneThe chair mechanism 4 may, for example, as a so-called Synchronous mechanism be executed, which couples the backrest 6 with the seat surface 7, wherein a tilt of the backrest
6 eine typischerweise etwas geringere Neigung der SitzflächeFig. 6 shows a typically slightly lower inclination of the seat surface
7 hervorruft. Bekannt sind auch Bürostühle, bei denen die Rückenlehne 6 nicht nur vor und zurück geschwenkt werden kann, wenn sich ein Benutzer daran anlehnt, sondern die auch seitwärts schwenkbar ist, beispielsweise um eine horizontale 7 causes. Also known are office chairs, in which the backrest 6 can not only be pivoted back and forth when a user leans against it, but is also pivotable sideways, for example, a horizontal
Drehachse, die durch ein hinter der Sitzfläche 7 Rotary axis by a behind the seat 7th
angeordnetes Gelenk realisiert sein kann. Typischerweise wird dabei die Rückenlehne 6 durch ein Rückstellelement wie eine Feder oder dergleichen in der aufrechten Stellung gehalten bzw. in die aufrechte Stellung zurückbewegt, wenn die Rückenlehne 6 aus der aufrechten Stellung ausgelenkt wurde. Dadurch sind sowohl das Rückstellelement als auch die Rückenlehne 6 in der aufrechten Stellung kraftfrei. arranged joint can be realized. Typically, the backrest 6 is held by a return element such as a spring or the like in the upright position or moved back into the upright position when the backrest 6 has been deflected from the upright position. As a result, both the restoring element and the backrest 6 are force-free in the upright position.
Zur weiteren Verbesserung bekannter Bürostühle wird nunmehr vorgeschlagen, die Rückenlehne 6 an zwei Gelenken 8 zu befestigen, die zueinander parallele Drehachsen 10 To further improve known office chairs is now proposed to attach the backrest 6 to two joints 8, the parallel axes of rotation 10th
aufweisen. Mit anderen Worten soll also die Rückenlehne 6 an zwei zueinander parallelen Drehachsen 10 schwenkbar gelagert werden. Hierdurch ergibt sich eine gegenüber bekannten respectively. In other words, therefore, the backrest 6 is to be pivotally mounted on two mutually parallel axes of rotation. This results in a comparison with known
Stühlen mit seitwärts schwenkbarer Rückenlehne ein anderer Bewegungsverlauf der Rückenlehne 6. Außerdem kann sich die Rückenlehne 6 durch die gewählte Art der Lagerung während der Schwenkbewegung verformen, wodurch eine dreidimensionale Bewegung der Rückenlehne 6 sowie die Erzeugung einer In addition, the backrest 6 can deform by the selected type of storage during the pivoting movement, whereby a three-dimensional movement of the backrest 6 and the generation of a
Rückstellkraft erzielt werden können. Restoring force can be achieved.
Die Drehachsen 10 können beispielsweise an einer gemeinsamen Grundplatte 9 angebracht sein und die Grundplatte 9 ihrerseits kann an einer die Rückenlehne 6 mit der The axes of rotation 10 may for example be attached to a common base plate 9 and the base plate. 9 in turn, at a backrest 6 with the
Sitzfläche 7 koppelnden Stuhlmechanik 4 angebracht sein, beispielsweise lösbar. Dies würde es auch ermöglichen, handelsübliche Stuhlmechaniken 4 zu verwenden, bei denen die Anbringung der Rückenlehne 6 an zwei Gelenken eigentlich nicht vorgesehen ist. Seat 7 coupling chair mechanism 4 may be attached, for example, detachable. This would also make it possible to use commercially available chair mechanisms 4 in which the attachment of the backrest 6 to two joints is not actually provided.
In einer ersten Ausgestaltung kann vorgesehen sein, dass die Drehachsen 10 mit einer Horizontalebene einen spitzen Winkel einschließen. Dadurch bewirkt eine seitliche Auslenkung nach links oder rechts stets auch eine leichte Auslenkung der Rückenlehne 6 nach vorne oder hinten, was beispielsweise bei horizontal ausgerichteten Drehachsen 10, d.h. bei =0, nicht der Fall wäre. In a first embodiment, it may be provided that the axes of rotation 10 enclose an acute angle with a horizontal plane. As a result, a lateral deflection to the left or right always causes a slight deflection of the backrest 6 forward or backward, which, for example, in horizontally oriented axes of rotation 10, i. if = 0, that would not be the case.
Alternativ oder zusätzlich kann vorgesehen sein, dass die Gelenke 8 mit je einem Rückstellelement 12 wirkverbunden sind. Obwohl bereits die elastische Verformung der Alternatively or additionally, it may be provided that the joints 8 are operatively connected to one return element 12 each. Although already the elastic deformation of the
Rückenlehne 6, wie oben erläutert, eine Rückstellkraft erzeugt, die einer seitlichen Auslenkung der Rückenlehne 6 entgegenwirkt, kann es vorteilhaft sein, diese Backrest 6, as explained above, generates a restoring force which counteracts a lateral deflection of the backrest 6, it may be advantageous, this
Rückstellkraft durch die hier vorgeschlagene Verwendung zusätzlicher Rückstellelemente 12 zu unterstützen oder zu verstärken. Dabei kann weiter vorgesehen sein, dass die Rückstellelemente 12 in entgegengesetzter Richtung wirken, d.h. das eine Rückstellelement 12 wirkt einer Auslenkung nach links entgegen und das andere Rückstellelement wirkt einer Auslenkung nach rechts entgegen. To support restoring force by the use here proposed additional restoring elements 12 or reinforce. It can further be provided that the return elements 12 act in the opposite direction, i. the one return element 12 counteracts a deflection to the left and the other return element counteracts a deflection to the right.
Weiter kann vorgesehen sein, dass die Rückstellelemente 12 bei aufrechter Stellung der Rückenlehne 6 vorgespannt sind. Dadurch wird erreicht, dass die Rückstellkraft, die einer seitlichen Auslenkung der Rückenlehne 6 entgegenwirkt, verstärkt wird. It can further be provided that the return elements 12 are prestressed in the upright position of the backrest 6. This ensures that the restoring force, which counteracts a lateral deflection of the backrest 6, is reinforced.
Gemäß einer weiteren Ausgestaltung ist vorgesehen, dass die Sitzlehne 6 einen Rahmen aufweist, der im Bereich zwischen den Gelenken 8 eine Unterbrechung aufweist. Diese According to a further embodiment, it is provided that the seat back 6 has a frame which has an interruption in the region between the joints 8. These
Unterbrechung führt dazu, dass sich die Rückenlehne 6 bei einer seitlichen Auslenkung leichter elastisch verformen kann und durch eine derartige Verformung einen zusätzlichen Massageeffekt auf den Rücken des Benutzers erzeugt. Solche Massageeffekte sind sehr erwünscht, weil sie einer Ermüdung des Benutzers und der Entstehung von Rückenschmerzen Breakage causes the backrest 6 can deform easily elastic in a lateral deflection and generated by such a deformation an additional massage effect on the back of the user. Such massage effects are highly desirable because they reduce user fatigue and the development of back pain
entgegenwirken . counteract.
Dabei kann weiter vorgesehen sein, dass in der Unterbrechung mindestens ein elastisches Element 14 angeordnet ist. Dieses elastische Element lässt zwar in gewissen Grenzen eine elastische Verformung wie oben beschrieben zu, verstärkt aber ebenfalls die einer seitlichen Auslenkung It can further be provided that at least one elastic element 14 is arranged in the interruption. Although this elastic element allows, within certain limits, an elastic deformation as described above, it also reinforces that of a lateral deflection
entgegenwirkende Rückstellkraft. Außerdem kann das counteracting restoring force. In addition, that can
elastische Element dazu dienen, einerseits den optischen Eindruck eines nicht unterbrochenen Rahmens zu erzeugen und andererseits beispielsweise bei der Befestigung eines elastic element serve on the one hand to produce the visual impression of a non-interrupted frame and on the other hand, for example, in the attachment of a
Bezugsstoffes für die Rückenlehne 6 mitzuwirken. Ein Cover fabric for the backrest 6 cooperate. On
derartiges elastisches Element kann beispielsweise ein Zwei- Komponenten-Bauteil aus unterschiedlich elastischen, d.h. unterschiedlich schwer verformbaren Kunststoffen sein. Dabei können zwei Materialstreifen eines ersten Kunststoffs, der vergleichsweise hart und daher schwer verformbar ist For example, such elastic member may be a two-component member made of different elastic, i. be difficult to deform plastic materials. In this case, two strips of material of a first plastic, which is relatively hard and therefore difficult to deform
zwischen sich einen Materialstreifen eines zweiten, between itself a strip of material of a second,
vergleichsweise weichen und daher leicht verformbaren comparatively soft and therefore easily deformable
Kunststoffs einschließen. Die beiden härteren Include plastic. The two harder
Materialstreifen können dazu dienen, das elastische Element 14 links und rechts der Unterbrechung des Rahmens der Material strips can serve to the elastic element 14 left and right of the interruption of the frame of the
Rückenlehne 6 an diesem Rahmen zu befestigen, beispielsweise anzuschrauben. Der dazwischen befindliche weichere To attach backrest 6 to this frame, for example, screw. The softer one between them
Materialstreifen dient dann dazu, eine Verformung der Material strip then serves to deformation of the
Rückenlehne 6 zuzulassen, dieser Verformung jedoch eine Rückstellkraft entgegenzusetzen. Allow backrest 6, however, to oppose this deformation a restoring force.
Nachfolgend wird die Erfindung anhand von zwei Hereinafter, the invention with reference to two
Ausführungsbeispielen und zugehörigen Zeichnungen näher erläutert. Dabei zeigen Fig. 1 bis 7 verschiedene Ansichten und Schnittdarstellungen von Details eines ersten Ausführungsbeispiels und Embodiments and associated drawings explained in more detail. 1 to 7 show different views and sectional views of details of a first embodiment and
Fig. 8 bis 15 verschiedene Ansichten und Fig. 8 to 15 different views and
Schnittdarstellungen von Details eines zweiten Sectional views of details of a second
Ausführungsbeispiels . Wie aus den Darstellungen der Fig. 1 und 2 ersichtlich ist, weist im gezeigten Ausführungsbeispiel die Sitzlehne einen Rahmen auf, der im Bereich zwischen den Gelenken eine Embodiment. As can be seen from the illustrations of FIGS. 1 and 2, in the exemplary embodiment shown, the seat back has a frame, which in the region between the joints a
Unterbrechung aufweist. In dieser Unterbrechung kann Has interruption. In this interruption can
mindestens ein elastisches Element 14 angeordnet sein. Im gezeigten Beispiel ist die Unterbrechung durch das at least one elastic element 14 may be arranged. In the example shown, the interruption is through the
elastische Element 14 ausgefüllt. Es kann sich dabei beispielsweise um einen Silikonkautschuk, Polyurethan (PU) oder dergleichen gummielastische Werkstoffe handeln. filled elastic element 14. It may be, for example, a silicone rubber, polyurethane (PU) or the like rubber-elastic materials.
Alternativ können auch mehrere elastische Elemente 14 in der Unterbrechung angeordnet sein, die die beiden Alternatively, a plurality of elastic elements 14 may be arranged in the interruption, the two
gegenüberliegenden Ränder der Unterbrechung miteinander verbinden. Hierdurch können einerseits interessante connect opposite edges of the interruption. This can be interesting on the one hand
ästhetische Effekte erzielt werden, andererseits kann dadurch eine feine Abstimmung der Kraftwirkung der elastischen Elemente 14 auf die beiden gegenüberliegenden Ränder der Unterbrechung erzielt werden. aesthetic effects can be achieved, on the other hand, this can be a fine vote of the force of the elastic elements 14 are achieved on the two opposite edges of the interruption.
Fig. 3 zeigt eine Stuhlmechanik 4, an deren hinterem Ende die Gelenke 8 angeordnet sind. Die Fig. 4 und 5 zeigen die Gelenkanordnung freigestellt und aus zwei verschiedenen Blickrichtungen . Fig. 3 shows a chair mechanism 4, at the rear end of the joints 8 are arranged. FIGS. 4 and 5 show the joint arrangement free and from two different viewing directions.
Am hinteren Ende der Stuhlmechanik 4 ist in diesem konkreten Ausführungsbeispiel eine Grundplatte 9 angebracht, an der zwei Drehachsen 10 einseitig befestigt sind. Auf jeder At the rear end of the chair mechanism 4, a base plate 9 is mounted in this particular embodiment, are attached to the two axes of rotation 10 on one side. On each
Drehachse 10 sitzt ein Befestigungsblock 11, der dadurch um die Drehachse 10 drehbar ist. Die beiden Befestigungsblöcke 11 weisen an ihrer Unterseite jeweils eine Aussparung auf, in der jeweils ein Rückstellelement 12 angeordnet ist. Die Rückstellelemente 12 sind als Schenkelfedern ausgeführt, die sich jeweils mit einem ersten Schenkel an ihrem Rotary axis 10 is seated a mounting block 11, which is thereby rotatable about the axis of rotation 10. The two mounting blocks 11 each have on their underside a recess, in each of which a return element 12 is arranged. The return elements 12 are designed as torsion springs, each with a first leg on her
Befestigungsblock 11 abstützen. Schenkelfedern, auch  Support mounting block 11. Thigh feathers, too
Drehfedern genannt, sind mechanische Kraftspeicher, die bei einer Winkel-/Drehbewegung an den Schenkeln ein Drehmoment aufnehmen, das sie beim Entspannen wieder abgeben. Im hier gezeigten Ausführungsbeispiel ist zwischen den beiden Drehachsen 10 ein Anschlagelement 13 angeordnet, an dem sich die beiden Rückstellelemente 12 jeweils mit einem zweiten Schenkel abstützen. Eine Verdrehung eines Torsionally called torsion springs are mechanical energy stores that absorb a torque at an angle / rotational movement on the legs, which they release again when relaxing. In the embodiment shown here, a stop element 13 is arranged between the two axes of rotation 10, on which the two return elements 12 are supported in each case with a second leg. A twist of one
Befestigungsblocks 11 auf der zugehörigen Drehachse 10 führt somit dazu, dass das zugehörige Rückstellelement 12 eine Rückstellkraft aufbaut, die der Verdrehung des Mounting block 11 on the associated axis of rotation 10 thus results in that the associated return element 12 builds up a restoring force, the rotation of the
Befestigungsblocks 11 entgegengerichtet ist. Aus der Fixing block 11 is opposite. From the
Darstellung wird auch ersichtlich, dass im gezeigten Appearance will also be apparent in that shown
Beispiel die Rückstellelemente 12 in entgegengesetzter Example, the return elements 12 in opposite
Richtung wirken. Dadurch wird die Rückenlehne 6 im unbelasteten Zustand stets in der aufrechten Stellung gehalten. Die Rückstellelemente 12 können bei aufrechter Stellung der Rückenlehne vorgespannt sein. Die Vorspannung kann darüber hinaus einstellbar sein. Es versteht sich, dass die Gelenke 8 auch anders als im hier gezeigten Ausführungsbeispiel ausgeführt sein können. Act direction. As a result, the backrest 6 in unloaded state always kept in the upright position. The return elements 12 may be biased in the upright position of the backrest. The bias voltage can also be adjustable. It is understood that the joints 8 can also be designed differently than in the embodiment shown here.
Insbesondere ist der konkrete Aufbau aus Grundplatte 9, Drehachsen 10, Befestigungsblöcken 11 und Rückstellelementen 12 keinesfalls zwingend. Beispielsweise kann der bewegliche Teil eines Gelenks 8 auch Bestandteil der Rückenlehne 6 sein . In particular, the concrete construction of base plate 9, axes of rotation 10, mounting blocks 11 and return elements 12 is by no means mandatory. For example, the movable part of a joint 8 may also be part of the backrest 6.
Fig. 6 zeigt eine dreidimensionale Darstellung der Fig. 6 shows a three-dimensional representation of
Stuhlmechanik 4 mit den daran angeordneten Gelenken 8. Wie besonders aus der unten dargestellten Seitenansicht Chair mechanism 4 with the joints arranged thereon 8. As particularly from the side view shown below
ersichtlich ist, schließen die Drehachsen 10 der Gelenke 8 mit einer Horizontalebene einen spitzen Winkel ein. it can be seen, include the axes of rotation 10 of the joints 8 with a horizontal plane an acute angle.
Daraus ergibt sich eine dreidimensionale Bewegungsform der Rückenlehne 6 gegenüber der Sitzfläche 7, die in Fig. 7 in einer Ansicht von hinten und einer Ansicht von oben This results in a three-dimensional movement of the backrest 6 relative to the seat surface 7, which in Fig. 7 in a view from the rear and a view from above
schematisch dargestellt ist. is shown schematically.
Das in den Figuren 8 bis 15 gezeigte zweite The second shown in Figures 8 to 15
Ausführungsbeispiel weist gegenüber dem ersten Embodiment has opposite to the first
Ausführungsbeispiel viele Gemeinsamkeiten und einige Embodiment many similarities and some
Unterschiede auf. Die Grundplatte 9 ist in diesem Fall ein Blech-Biegeteil, dessen obere Kante so ausgebildet ist, dass die Grundplatte 9 in die Stuhlmechanik 4 an deren Rückseite eingehängt werden kann. Gesichert wird diese Verbindung zwischen der Grundplatte 9 und der Stuhlmechanik 4 durch eine (nicht dargestellte) Sicherungsschraube, die in eine Gewindebohrung 15 eingebracht wird, die an der Unterseite der Grundplatte 9 zu diesem Zweck vorgesehen ist. Die Gelenke 8 weisen bei diesem Ausführungsbeispiel keine separaten Befestigungsblöcke auf, die um die Drehachsen 10 drehbar sind. Stattdessen sind die Drehachsen 10 direkt mit den beiden unteren Ausläufern der Rückenlehne 6 verbunden. Dazu weisen die unteren Ausläufer der Rückenlehne 6 Differences. The base plate 9 is in this case a sheet metal bent part whose upper edge is formed so that the base plate 9 can be hung in the chair mechanism 4 at the rear. This connection is secured between the Base plate 9 and the chair mechanism 4 by a (not shown) locking screw which is inserted into a threaded bore 15 which is provided on the underside of the base plate 9 for this purpose. The joints 8 have no separate mounting blocks in this embodiment, which are rotatable about the axes of rotation 10. Instead, the axes of rotation 10 are directly connected to the two lower foothills of the backrest 6. For this purpose, the lower extensions of the backrest 6
Bohrungen auf, in die die Drehachsen 10 eingeführt sind. Um die Rückenlehne 6 auf den Drehachsen 10 axial zu sichern, sind Sicherungsstifte 17 in miteinander fluchtenden Holes in which the axes of rotation 10 are introduced. To axially secure the backrest 6 on the axes of rotation 10, locking pins 17 are in alignment with each other
Bohrungen 16 der Rückenlehne 6 und der Drehachsen 10 Holes 16 of the backrest 6 and the axes of rotation 10th
angeordnet . Um die Rückstellelemente 12 in axialer Richtung der arranged. To the return elements 12 in the axial direction of
Drehachsen 10 zu fixieren, sind auf den Drehachsen 10 zwei Federsicherungsclips 18 angeordnet.  To fix rotary axles 10, two spring retaining clips 18 are arranged on the rotary axes 10.
Aus ästhetischen Gründen ist der durch die Grundplatte 9, die Drehachsen 10 und das Anschlagelement 13 gebildete For aesthetic reasons, that formed by the base plate 9, the axes of rotation 10 and the stopper 13
Adapter zur Anbringung der Rückenlehne 6 an der Adapter for attaching the backrest 6 to the
Stuhlmechanik 4 durch die Adapterabdeckung 19 überdeckt und damit von außen nicht sichtbar. Chair mechanism 4 covered by the adapter cover 19 and thus not visible from the outside.
Stuhl chair
Bezugszeichenliste Fußkreuz Reference numeral foot cross
Rolle role
Gasdruckfeder Gas spring
Stuhlmechanik chair mechanism
Armlehne armrest
Rückenlehne backrest
Sitzfläche seat
Gelenk joint
Grundplatte baseplate
Drehachse axis of rotation
Befestigungsblock mounting block
Rückstellelement Return element
Anschlagelement stop element
elastisches Element elastic element
Gewindebohrung threaded hole
Bohrung drilling
Sicherungsstift safety pin
Federsicherungsclip Spring retention clip
Adapterabdeckung adapter cover
Winkel corner

Claims

Stuhl chair
1. Stuhl, insbesondere Bürostuhl, mit einer Sitzfläche (7) und einer seitwärts schwenkbaren Rückenlehne (6), wobei die Rückenlehne (6) an zwei Gelenken (8) befestigt ist, die zueinander parallele Drehachsen (10) aufweisen. 1. chair, in particular office chair, with a seat surface (7) and a sideways pivoting backrest (6), wherein the backrest (6) is attached to two joints (8) having mutually parallel axes of rotation (10).
2. Stuhl nach Anspruch 1, bei dem die Drehachsen (10) an einer gemeinsamen Grundplatte (9) angebracht sind und die Grundplatte (9) an einer die Rückenlehne (6) mit der Sitzfläche (7) koppelnden Stuhlmechanik (4) 2. Chair according to claim 1, wherein the axes of rotation (10) on a common base plate (9) are mounted and the base plate (9) on a backrest (6) with the seat surface (7) coupling chair mechanism (4).
angebracht ist.  is appropriate.
3. Stuhl nach Anspruch 1 oder 2, bei dem die Drehachsen (10) mit einer Horizontalebene einen spitzen Winkel einschließen . 3. Chair according to claim 1 or 2, wherein the axes of rotation (10) include an acute angle with a horizontal plane.
4. Stuhl nach einem der Ansprüche 1 bis 3, bei dem die 4. Chair according to one of claims 1 to 3, wherein the
Gelenke (8) mit je einem Rückstellelement (12)  Joints (8) each with one return element (12)
wirkverbunden sind.  are actively connected.
5. Stuhl nach Anspruch 4, bei dem die Rückstellelemente (12) in entgegengesetzter Richtung wirken. 5. Chair according to claim 4, wherein the return elements (12) act in the opposite direction.
6. Stuhl nach Anspruch 4 oder 5, bei dem die 6. Chair according to claim 4 or 5, wherein the
Rückstellelemente (12) bei aufrechter Stellung der Rückenlehne (6) vorgespannt sind. Reset elements (12) in the upright position of Backrest (6) are biased.
Stuhl nach einem der vorhergehenden Ansprüche, bei dem die Sitzlehne (6) einen Rahmen aufweist, der im Bereich zwischen den Gelenken (8) eine Unterbrechung aufweist. Chair according to one of the preceding claims, wherein the seat back (6) comprises a frame which has an interruption in the area between the joints (8).
Stuhl nach Anspruch 7, bei dem in der Unterbrechung mindestens ein elastisches Element (14) angeordnet ist. Chair according to claim 7, wherein at least one elastic element (14) is arranged in the interruption.
Stuhl nach Anspruch 8, bei dem das elastische Element (14) ein Zwei-Komponenten-Bauteil aus unterschiedlich elastischen Kunststoffen ist. Chair according to claim 8, wherein the elastic element (14) is a two-component component made of different elastic plastics.
EP18706657.6A 2017-02-03 2018-02-05 Chair Active EP3576573B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017102148 2017-02-03
PCT/EP2018/052821 WO2018141968A1 (en) 2017-02-03 2018-02-05 Chair

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Publication Number Publication Date
EP3576573A1 true EP3576573A1 (en) 2019-12-11
EP3576573B1 EP3576573B1 (en) 2021-04-07

Family

ID=61258188

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Application Number Title Priority Date Filing Date
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US (1) US10945529B2 (en)
EP (1) EP3576573B1 (en)
CN (1) CN110430787B (en)
WO (1) WO2018141968A1 (en)

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Also Published As

Publication number Publication date
US20200029695A1 (en) 2020-01-30
US10945529B2 (en) 2021-03-16
CN110430787B (en) 2023-09-12
EP3576573B1 (en) 2021-04-07
CN110430787A (en) 2019-11-08
WO2018141968A1 (en) 2018-08-09

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