EP1300101B1 - Backrest for a chair - Google Patents

Backrest for a chair Download PDF

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Publication number
EP1300101B1
EP1300101B1 EP02020040A EP02020040A EP1300101B1 EP 1300101 B1 EP1300101 B1 EP 1300101B1 EP 02020040 A EP02020040 A EP 02020040A EP 02020040 A EP02020040 A EP 02020040A EP 1300101 B1 EP1300101 B1 EP 1300101B1
Authority
EP
European Patent Office
Prior art keywords
frame
legs
chair
frame parts
back according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02020040A
Other languages
German (de)
French (fr)
Other versions
EP1300101A3 (en
EP1300101A2 (en
Inventor
Martin Ballendat
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.)
BALLENDAT, MARTIN
Original Assignee
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs GmbH
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 Friedrich W Dauphin GmbH and Co, Dauphin Entwicklungs und Beteiligungs GmbH filed Critical Friedrich W Dauphin GmbH and Co
Publication of EP1300101A2 publication Critical patent/EP1300101A2/en
Publication of EP1300101A3 publication Critical patent/EP1300101A3/en
Application granted granted Critical
Publication of EP1300101B1 publication Critical patent/EP1300101B1/en
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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
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means
    • 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

Definitions

  • the invention relates to a backrest for a chair.
  • Such backrests with a backrest frame are known the one U-shaped lower frame part and one as the upper end part serve plastic bracket.
  • the cover has two piping on the side or hemstitch on the approximately vertical side Leg of the lower part of the frame can be pushed on.
  • the cover will fixed with locking pins on the lower part of the frame.
  • a backrest with a backrest frame which consists of two lateral tubular struts and a lower and an upper cross strut made of flat steel.
  • the side struts exist made of an aluminum profile with an undercut longitudinal groove, inserted into the piping rods attached to the side edges of a cover become. Keder seams are attached to the cover at the top and bottom, into which the flat steel struts are inserted. Then the Frame screwed together.
  • a backrest is known from DE 197 54 817 A1; the a frame in the form of a U open at the bottom.
  • the legs of the frame are articulated to the upper crossbar. It becomes a reference used, which is bag-shaped.
  • the articulated frame will with appropriate pivoting of the web and a leg in the Cover inserted and then pushed apart while stretching the cover. The lower free ends of the legs of the frame are then attached to the chair.
  • the invention has for its object a backrest for one To create a chair that is easy to assemble and an even one Allows tension of the cover in all directions.
  • the result of the solution according to the invention is that the frame parts through a relatively small opening in a welt hem in the prefabricated Cover can be introduced.
  • the assembly of the two frame parts too a frame is very simple.
  • the opening in the cover is at the fixation of the two frame parts visually completely hidden from each other.
  • the chair shown in Fig. 1 has a seat 1, which is symmetrical mutually arranged chair legs 2, 3 with chair castors 4 on the Ground is supported.
  • the chair legs 2, 3 are paired to one Armrest 5 summarized.
  • a backrest 6 attached, which is rectangular, and in particular has square backrest frame 7, with a cover 8th is provided.
  • the frame 7 consists of two approximately the same C-shaped Frame parts 9, 10. They consist of metal tubes 11, which the corners 12 between each leg 13 and 14 and a web 15 are connected by welding.
  • the two frame parts 9, 10 - as can be seen from the exploded view in FIG. 2 - Connected to each other at the free ends of their legs 13, 14. to Centering is at one end of a leg 13 or 14, a centering pin 16 attached, the in the associated end of the one aligned with it Leg 13 or 14 is introduced.
  • the frame 7 to be formed by the two frame parts 9, 10 is also used the reference 8 shown in Fig. 3 provided.
  • the four the webs 15 and the legs 13, 14 associated long sides each a hollow welt hem 17, 18, 19, 20, that is a tubular hemstitch on.
  • the cover 8 consists of a knitted fabric made of natural and / or Plastic and / or metal yarn or a suitable mixture of such Yarns. It can also be made from a sufficiently elastic fabric getting produced.
  • the welt seams 17 to 20 can be used for knitting be made, but can also be subsequently sewn or the like getting produced.
  • the legs 13, 14 of the two frame parts 9, 10 are each a small insertion opening 21 is formed, through each of which a frame part 9 or 10 is introduced. Due to the elasticity of the cover 8 and a sufficient width of the welt seams 17 to 20 compared to The width of the tubes 11, the frame parts 9, 10 can be threaded. By interlocking the legs 13, 14 by means of the centering pin 16 the cover 8 is stretched. The connection points of the legs 13, 14 the frame parts 9, 10 are located in the area of the openings 21.
  • connecting elements 22 Connecting the backrest pre-assembled in the manner described 6 on the armrests 5 of the chairs by means of connecting elements 22, which are also shown in particular in FIG. 4.
  • This also part of the Back elements 6 forming connecting elements 22 are T-shaped.
  • Your vertically arranged end web 23 has one of the curvature of the tubes 11 adapted inner surface 24. It is still with two holes 25 provided with two holes 26 in the legs 13, 14th the frame parts 9, 10 are aligned, if the latter in the manner described are connected to each other in a butt joint. Be through the holes 25 Screws 27 screwed into the holes 26. This will make the two Frame parts 9, 10 firmly together and with the connecting elements 21 connected.
  • the end web 23 covers each connecting element 22 the associated opening 21 in the welt edge 17, 19 of the cover 8 from, so that the opening 9 is invisible from the outside.
  • each connecting element 22 has two projecting parallel to each other holding pins 29, 30 in the two open ends of the chair legs 2, 3 and to an armrest 5 summarized tubes 31, 32 are introduced.
  • a fixation of the Connecting elements 22 with the tubes 31, 32 are each made with one Screw 33, which from below through the outer tube 31 in a hole 34 is screwed into the longer retaining pin 29.
  • the connection from the user of the chair to the backrest 6 exercised borrowers.
  • the backrest frame 7 is curved, i. H. the horizontal As seen from seat 1, webs 15 are bent to the rear, while the vertical legs 13, 14 are bent towards the seat 1.
  • the chair shown in FIG. 5 is an office chair, whose seat 40 is attached to a seat support, not shown, which by means of a length-adjustable chair column 41 attached to a base 42 is, which in turn is supported on the floor via chair castors 43.
  • a backrest support 44 is attached to the seat support, that protrudes upward behind the seat 40.
  • It is cruciform, d. H. it has an essentially vertically upwardly projecting central rod 45 and a substantially horizontal crossbar 46 on. Both rods 45, 46 are towards their ends towards the seat 40 curved, d. H. seen from seat 40, they are concave or seen from the back convex.
  • Part of a backrest 47 is fastened to the backrest support 44, which - as in the previously described embodiment - an approximately rectangular, in particular has approximately a square backrest frame 48, which is provided with a cover 49 which is designed in the same way, like the previously described, shown in Fig. 3 reference 8, so that on the related description can be referenced.
  • the frame 48 also consists of two C-shaped frame parts 50, 51, the legs 52, 53 arranged horizontally in this embodiment are, while the webs 54 are arranged vertically.
  • the thigh 52, 53 have flange webs at their free, mutually facing ends 55, 56, each paired with each other and then have the same cross-section as the legs 52, 53. They each have two bores 57 which lie one above the other the webs 55, 56 are aligned with one another and those with bores 58 in Coverage can be brought up in supports 59, 60 of the central rod 45 are formed.
  • In the ends of the cross bar 46 are also Bores 61 formed when the frame 48 abuts the backrest support 44 each with a bore 62 in the middle of each Bridge 54 aligned.
  • the frame parts 50, 51 are not made of metal pipes in this embodiment formed, but consist of injected fiber-reinforced Plastic, for example plastic reinforced with graphite fibers.
  • the assembly takes place in such a way that - as already described - first Leg 52 and then the web 54 and then the other leg 53 one Frame part 50 or 51 through an insertion opening 21 of the cover 49 in the welt seams 17, 18, 19 and then the other frame part 51 in is pushed into the welt seams 17, 20, 19 in the same way.
  • the welt seams 17 to 20 are wider than the legs 52, 53 and the webs 54 to allow insertion.
  • the flange webs 54, 55 are located then in register with the openings 21 of the cover 49.
  • the frame parts 50, 51 are thereby stabilized against each other that a mounting aid pin, not shown pushed through middle center holes 63 of the flange webs 55, 56 becomes.
  • the backrest 47 which is preassembled in this way is applied to the supports 59, 60 serving as connecting elements, whereupon the attachment of the frame 48 with reference 49 to the central rod 45 in that screws 64 through the holes 58 in the supports 59, 60 in the bores 57 of the flange webs lying one on top of the other 55, 56 can be screwed, which also means a firm connection the frame parts 50, 51 are reached together.
  • the backrest 47 are then screws 65 through the holes 61 screwed in the crossbar 46 into the holes 62 in the webs 54.
  • the backrest frame can also be used in the exemplary embodiment according to FIGS. 5 and 6 48 be curved overall, d. H. the horizontal Legs 52, 53 are towards the back toward the backrest support 44 bent, while the vertical webs 54 bent towards the seat 40 are.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

A back frame (7) comprises of two C-shaped frame members (9,10), each frame member having two legs (13,14) connected with a horizontal bar (15). The frame members are joined together at the free ends of the legs. A cover has four side seams receiving the legs and the bars, and a pair of insertion openings located at the frame member juncture. <??>Each connector (22), mounted to the frame member juncture through each insertion opening, also covers the opening.

Description

Die Erfindung betrifft eine Rückenlehne für einen Stuhl.The invention relates to a backrest for a chair.

Es sind derartige Rückenlehnen mit einem Rückenlehnen-Rahmen bekannt, die ein U-förmiges unteres Rahmenteil und einen als oberes Abschlußteil dienenden Kunststoffbügel aufweisen. Der Bezug weist zwei seitliche Kedersäume bzw. Hohlsäume auf, die auf die etwa vertikalen seitlichen Schenkel des unteren Rahmenteils aufgeschoben werden. Der Bezug wird mittels Sicherungsstiften am unteren Rahmenteil festgelegt. An ihm ist eine mittlere obere Lasche ausgebildet, die in dem oberen Abschlußbügel befestigt und gespannt wird.Such backrests with a backrest frame are known the one U-shaped lower frame part and one as the upper end part serve plastic bracket. The cover has two piping on the side or hemstitch on the approximately vertical side Leg of the lower part of the frame can be pushed on. The cover will fixed with locking pins on the lower part of the frame. There is one on him middle upper flap formed, which is fastened in the upper end bracket and is excited.

Es ist weiterhin eine Rückenlehne mit einem Rückenlehnen-Rahmen bekannt, der aus zwei seitlichen rohrförmigen Streben und einer unteren und einer oberen Querstrebe aus Flachstahl besteht. Die seitlichen Streben bestehen aus einem Aluminium-Profil mit einer hinterschnittenen Längsnut, in die an den Seitenrändern eines Bezuges angebrachte Kederstäbe eingeschoben werden. Am Bezug sind oben und unten Kedersäume angebracht, in die die Flachstahl-Streben eingeschoben werden. Anschließend wird der Rahmen zusammengeschraubt.A backrest with a backrest frame is also known, which consists of two lateral tubular struts and a lower and an upper cross strut made of flat steel. The side struts exist made of an aluminum profile with an undercut longitudinal groove, inserted into the piping rods attached to the side edges of a cover become. Keder seams are attached to the cover at the top and bottom, into which the flat steel struts are inserted. Then the Frame screwed together.

Diese bekannten Konstruktionen sind hinsichtlich ihrer Montage außerordentlich aufwendig.These known constructions are extraordinary with regard to their assembly consuming.

Aus der DE 197 54 817 A1 ist eine Rückenlehne bekannt; die einen Rahmen in Form eines nach unten offenen U aufweist. Die Schenkel des Rahmens sind gelenkig mit dem oberen Quersteg verbunden. Es wird ein Bezug verwendet, der sackförmig ausgebildet ist. Der gelenkige Rahmen wird unter entsprechender Verschwenkung des Stegs und eines Schenkels in den Bezug eingeführt und dann unter Spannen des Bezuges auseinandergedrückt. Die unteren freien Enden der Schenkel des Rahmens werden dann am Stuhl befestigt.A backrest is known from DE 197 54 817 A1; the a frame in the form of a U open at the bottom. The legs of the frame are articulated to the upper crossbar. It becomes a reference used, which is bag-shaped. The articulated frame will with appropriate pivoting of the web and a leg in the Cover inserted and then pushed apart while stretching the cover. The lower free ends of the legs of the frame are then attached to the chair.

Der Erfindung liegt die Aufgabe zugrunde, eine Rückenlehne für einen Stuhl zu schaffen, die einfach zu montieren ist und eine gleichmäßige Spannung des Bezuges in allen Richtungen ermöglicht.The invention has for its object a backrest for one To create a chair that is easy to assemble and an even one Allows tension of the cover in all directions.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. Die erfindungsgemäße Lösung hat zur Folge, daß die Rahmenteile durch eine relativ kleine Öffnung in einen Kedersaum in den vorgefertigten Bezug eingeführt werden können. Die Montage der beiden Rahmenteile zu einem Rahmen ist sehr einfach. Die Öffnung im Bezug wird bei der Fixierung der beiden Rahmenteile gegeneinander optisch vollständig verdeckt.This object is achieved by the features of the claim 1 solved. The result of the solution according to the invention is that the frame parts through a relatively small opening in a welt hem in the prefabricated Cover can be introduced. The assembly of the two frame parts too a frame is very simple. The opening in the cover is at the fixation of the two frame parts visually completely hidden from each other.

Weitere vorteilhafte und zum Teil erfinderische Ausgestaltungen ergeben sich aus den Unteransprüchen.Further advantageous and partly inventive configurations result itself from the subclaims.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindungen ergeben sich aus der nachfolgenden Beschreibung zweier Ausführungsbeispiele anhand der Zeichnung. Es zeigt

Fig. 1
einen Stuhl mit einer ersten Ausführungsform einer erfindungsgemäßen Rückenlehne,
Fig. 2
den Rahmen der Rückenlehne des Stuhles nach Fig. 1 in Explosionsdarstellung,
Fig. 3
den Bezug für die Rückenlehne nach den Fig. 1 und 2,
Fig. 4
ein Verbindungselement für den Rahmen nach Fig. 2,
Fig. 5
einen Stuhl mit einer zweiten Ausführungsform einer Rückenlehne nach der Erfindung und
Fig. 6
den Rahmen der Rückenlehne des Stuhls nach Fig. 5 in Explosionsdarstellung.
Further features, advantages and details of the inventions result from the following description of two exemplary embodiments with reference to the drawing. It shows
Fig. 1
a chair with a first embodiment of a backrest according to the invention,
Fig. 2
the frame of the backrest of the chair of FIG. 1 in an exploded view,
Fig. 3
the cover for the backrest according to FIGS. 1 and 2,
Fig. 4
a connecting element for the frame of FIG. 2,
Fig. 5
a chair with a second embodiment of a backrest according to the invention and
Fig. 6
the frame of the back of the chair of FIG. 5 in an exploded view.

Der in Fig. 1 dargestellte Stuhl weist einen Sitz 1 auf, der über symmetrisch zueinander angeordnete Stuhlbeine 2, 3 mit Stuhlrollen 4 auf dem Boden abgestützt ist. Die Stuhlbeine 2, 3 sind jeweils paarweise zu einer Armlehne 5 zusammengefaßt. An den hinteren Enden der Armlehnen 5 ist eine Rückenlehne 6 angebracht, die einen rechteckigen, und insbesondere quadratischen Rückenlehnen-Rahmen 7 aufweist, der mit einem Bezug 8 versehen ist.The chair shown in Fig. 1 has a seat 1, which is symmetrical mutually arranged chair legs 2, 3 with chair castors 4 on the Ground is supported. The chair legs 2, 3 are paired to one Armrest 5 summarized. At the rear ends of the armrests 5 is a backrest 6 attached, which is rectangular, and in particular has square backrest frame 7, with a cover 8th is provided.

Wie sich aus Fig. 2 ergibt, besteht der Rahmen 7 aus zwei etwa gleichen C-förmigen Rahmenteilen 9, 10. Sie bestehen aus Metall-Rohren 11, die an den Ecken 12 zwischen jeweils einem Schenkel 13 bzw. 14 und einem Steg 15 durch Verschweißen miteinander verbunden sind. Die beiden Rahmenteile 9, 10 werden - wie sich aus der Explosionsdarstellung in Fig. 2 ergibt - an den freien Enden ihrer Schenkel 13, 14 miteinander verbunden. Zur Zentrierung ist an einem Ende eines Schenkels 13 bzw. 14 ein Zentrierzapfen 16 angebracht, der in das zugeordnete Ende des mit ihm fluchtenden Schenkels 13 bzw. 14 eingeführt wird. As is apparent from Fig. 2, the frame 7 consists of two approximately the same C-shaped Frame parts 9, 10. They consist of metal tubes 11, which the corners 12 between each leg 13 and 14 and a web 15 are connected by welding. The two frame parts 9, 10 - as can be seen from the exploded view in FIG. 2 - Connected to each other at the free ends of their legs 13, 14. to Centering is at one end of a leg 13 or 14, a centering pin 16 attached, the in the associated end of the one aligned with it Leg 13 or 14 is introduced.

Der durch die beiden Rahmenteile 9, 10 zu bildende Rahmen 7 wird mit dem in Fig. 3 dargestellten Bezug 8 versehen. Dieser weist an seinen vier, den Stegen 15 und den Schenkeln 13, 14 zugeordneten Längsseiten jeweils einen hohlen Kedersaum 17, 18, 19, 20, also einen schlauchförmigen Hohlsaum auf. Der Bezug 8 besteht aus einer Strickware aus Natur- und/oder Kunststoff- und/oder Metall-Garn oder einer geeigneten Mischung aus solchen Garnen. Er kann auch aus einem ausreichend elastischen Gewebe hergestellt werden. Die Kedersäume 17 bis 20 können beim Stricken mit hergestellt sein, können aber auch nachträglich durch Nähen oder dergleichen hergestellt werden. In der Mitte der beiden Kedersäume 17, 19, die die Schenkel 13, 14 der beiden Rahmenteile 9, 10 aufnehmen, ist jeweils eine kleine Einführ-Öffnung 21 ausgebildet, durch die jeweils ein Rahmenteil 9 bzw. 10 eingeführt wird. Aufgrund der Elastizität des Bezuges 8 und einer ausreichenden Breite der Kedersäume 17 bis 20 im Vergleich zur Breite der Rohre 11 können die Rahmenteile 9, 10 eingefädelt werden. Durch das Ineinandersetzen der Schenkel 13, 14 mittels der Zentrierzapfen 16 wird der Bezug 8 gespannt. Die Verbindungsstellen der Schenkel 13, 14 der Rahmenteile 9, 10 befinden sich im Bereich der Öffnungen 21.The frame 7 to be formed by the two frame parts 9, 10 is also used the reference 8 shown in Fig. 3 provided. The four the webs 15 and the legs 13, 14 associated long sides each a hollow welt hem 17, 18, 19, 20, that is a tubular hemstitch on. The cover 8 consists of a knitted fabric made of natural and / or Plastic and / or metal yarn or a suitable mixture of such Yarns. It can also be made from a sufficiently elastic fabric getting produced. The welt seams 17 to 20 can be used for knitting be made, but can also be subsequently sewn or the like getting produced. In the middle of the two welt seams 17, 19, the the legs 13, 14 of the two frame parts 9, 10 are each a small insertion opening 21 is formed, through each of which a frame part 9 or 10 is introduced. Due to the elasticity of the cover 8 and a sufficient width of the welt seams 17 to 20 compared to The width of the tubes 11, the frame parts 9, 10 can be threaded. By interlocking the legs 13, 14 by means of the centering pin 16 the cover 8 is stretched. The connection points of the legs 13, 14 the frame parts 9, 10 are located in the area of the openings 21.

Das Verbinden der in der geschilderten Weise vormontierten Rückenlehne 6 an den Armlehnen 5 der Stühle erfolgt mittels Verbindungselementen 22, die insbesondere auch in Fig. 4 dargestellt sind. Diese auch einen Teil der Rückenlehne 6 bildenden Verbindungselemente 22 sind T-förmig ausgebildet. Ihr vertikal anzuordnender End-Steg 23 weist eine der Krümmung der Rohre 11 angepaßte Innenfläche 24 auf. Er ist weiterhin mit zwei Bohrungen 25 versehen, die mit zwei Bohrungen 26 in den Schenkeln 13, 14 der Rahmenteile 9, 10 fluchten, wenn letztere in der geschilderten Weise miteinander auf Stoß verbunden sind. Durch die Bohrungen 25 werden Schrauben 27 in die Bohrungen 26 geschraubt. Hierdurch werden die beiden Rahmenteile 9, 10 fest miteinander und mit den Verbindungselementen 21 verbunden. Des weiteren deckt der End-Steg 23 jedes Verbindungselements 22 die zugeordnete Öffnung 21 im Kedersaum 17, 19 des Bezuges 8 ab, so daß die Öffnung 9 von außen unsichtbar wird.Connecting the backrest pre-assembled in the manner described 6 on the armrests 5 of the chairs by means of connecting elements 22, which are also shown in particular in FIG. 4. This also part of the Back elements 6 forming connecting elements 22 are T-shaped. Your vertically arranged end web 23 has one of the curvature of the tubes 11 adapted inner surface 24. It is still with two holes 25 provided with two holes 26 in the legs 13, 14th the frame parts 9, 10 are aligned, if the latter in the manner described are connected to each other in a butt joint. Be through the holes 25 Screws 27 screwed into the holes 26. This will make the two Frame parts 9, 10 firmly together and with the connecting elements 21 connected. Furthermore, the end web 23 covers each connecting element 22 the associated opening 21 in the welt edge 17, 19 of the cover 8 from, so that the opening 9 is invisible from the outside.

Der jeweilige Mittel-Steg 28 jedes Verbindungselements 22 weist zwei parallel zueinander vorspringende Haltezapfen 29, 30 auf, die in die beiden offenen Enden der die Stuhlbeine 2, 3 bildenden und zu einer Armlehne 5 zusammengefaßten Rohre 31, 32 eingeführt werden. Eine Fixierung der Verbindungselemente 22 mit den Rohren 31, 32 erfolgt mit jeweils einer Schraube 33, die von unten durch das jeweils außenliegende Rohr 31 in eine Bohrung 34 im längeren Haltezapfen 29 geschraubt wird. Von dieser Verbindung werden die vom Benutzer des Stuhls auf die Rückenlehne 6 ausgeübten Anlehnkräfte aufgenommen.The respective central web 28 of each connecting element 22 has two projecting parallel to each other holding pins 29, 30 in the two open ends of the chair legs 2, 3 and to an armrest 5 summarized tubes 31, 32 are introduced. A fixation of the Connecting elements 22 with the tubes 31, 32 are each made with one Screw 33, which from below through the outer tube 31 in a hole 34 is screwed into the longer retaining pin 29. Of this The connection from the user of the chair to the backrest 6 exercised borrowers.

Der Rückenlehnen-Rahmen 7 ist gebogen ausgebildet, d. h. die horizontalen Stege 15 sind - vom Sitz 1 her gesehen - nach hinten durchgebogen, während die vertikalen Schenkel 13, 14 zum Sitz 1 hin durchgebogen sind.The backrest frame 7 is curved, i. H. the horizontal As seen from seat 1, webs 15 are bent to the rear, while the vertical legs 13, 14 are bent towards the seat 1.

Bei dem in Fig. 5 dargestellten Stuhl handelt es sich um einen Bürostuhl, dessen Sitz 40 auf einem nicht dargestellten Sitzträger befestigt ist, der mittels einer längenverstellbaren Stuhlsäule 41 auf einem Fußkreuz 42 angebracht ist, das sich wiederum über Stuhlrollen 43 auf dem Boden abstützt. An dem Sitz tragenden Sitzträger ist ein Rückenlehnen-Träger 44 angebracht, der hinter dem Sitz 40 nach oben ragt. Er ist kreuzförmig ausgebildet, d. h. er weist einen im wesentlichen vertikal nach oben ragenden Mittel-Stab 45 und einen im wesentlichen horizontal verlaufenden Quer-Stab 46 auf. Beide Stäbe 45, 46 sind zu ihren Enden hin in Richtung zum Sitz 40 gebogen, d. h. sie sind vom Sitz 40 her gesehen konkav ausgebildet bzw. von der Rückseite her gesehen konvex ausgebildet.The chair shown in FIG. 5 is an office chair, whose seat 40 is attached to a seat support, not shown, which by means of a length-adjustable chair column 41 attached to a base 42 is, which in turn is supported on the floor via chair castors 43. A backrest support 44 is attached to the seat support, that protrudes upward behind the seat 40. It is cruciform, d. H. it has an essentially vertically upwardly projecting central rod 45 and a substantially horizontal crossbar 46 on. Both rods 45, 46 are towards their ends towards the seat 40 curved, d. H. seen from seat 40, they are concave or seen from the back convex.

Am Rückenlehnen-Träger 44 ist Teil einer Rückenlehne 47 befestigt, die - wie beim zuvor geschilderten Ausführungsbeispiel - einen etwa rechteckigen, insbesondere etwa quadratischen Rückenlehnen-Rahmen 48 aufweist, der mit einem Bezug 49 versehen ist, der in gleicher Weise ausgebildet ist, wie der zuvor geschilderte, in Fig. 3 dargestellte Bezug 8, so daß auf die zugehörige Beschreibung verwiesen werden kann.Part of a backrest 47 is fastened to the backrest support 44, which - as in the previously described embodiment - an approximately rectangular, in particular has approximately a square backrest frame 48, which is provided with a cover 49 which is designed in the same way, like the previously described, shown in Fig. 3 reference 8, so that on the related description can be referenced.

Der Rahmen 48 besteht ebenfalls aus zwei C-förmigen Rahmenteilen 50, 51, deren Schenkel 52, 53 in diesem Ausführungsbeispiel horizontal angeordnet sind, während die Stege 54 vertikal angeordnet werden. Die Schenkel 52, 53 weisen an ihren freien einander zugewandten Enden Flansch-Stege 55, 56 auf, die jeweils paarweise miteinander in Überdeckung gebracht werden und dann den gleichen Querschnitt haben, wie die Schenkel 52, 53. Sie weisen jeweils zwei Bohrungen 57 auf, die beim Übereinanderliegen der Stege 55, 56 miteinander fluchten und die mit Bohrungen 58 in Überdeckung gebracht werden können, die in Auflagern 59, 60 des Mittel-Stabes 45 ausgebildet sind. In den Enden des Quer-Stabes 46 sind ebenfalls Bohrungen 61 ausgebildet, die beim Anliegen des Rahmens 48 am Rückenlehnen-Träger 44 mit jeweils einer Bohrung 62 in der Mitte des jeweiligen Steges 54 fluchten.The frame 48 also consists of two C-shaped frame parts 50, 51, the legs 52, 53 arranged horizontally in this embodiment are, while the webs 54 are arranged vertically. The thigh 52, 53 have flange webs at their free, mutually facing ends 55, 56, each paired with each other and then have the same cross-section as the legs 52, 53. They each have two bores 57 which lie one above the other the webs 55, 56 are aligned with one another and those with bores 58 in Coverage can be brought up in supports 59, 60 of the central rod 45 are formed. In the ends of the cross bar 46 are also Bores 61 formed when the frame 48 abuts the backrest support 44 each with a bore 62 in the middle of each Bridge 54 aligned.

Die Rahmenteile 50, 51 sind bei diesem Ausführungsbeispiel nicht aus Metall-Rohren gebildet, sondern bestehen aus gespritztem faserverstärktem Kunststoff, beispielsweise mit Graphitfasern verstärktem Kunststoff. The frame parts 50, 51 are not made of metal pipes in this embodiment formed, but consist of injected fiber-reinforced Plastic, for example plastic reinforced with graphite fibers.

Die Montage erfolgt in der Weise, daß - wie bereits geschildert - zuerst ein Schenkel 52 und dann der Steg 54 und dann der andere Schenkel 53 eines Rahmenteils 50 bzw. 51 durch eine Einführ-Öffnung 21 des Bezuges 49 in die Kedersäume 17, 18, 19 und anschließend das andere Rahmenteil 51 in gleicher Weise in die Kedersäume 17, 20, 19 geschoben wird. Auch hier sind die Kedersäume 17 bis 20 breiter als die Schenkel 52, 53 und die Stege 54, um das Einschieben zu ermöglichen. Die Flansch-Stege 54, 55 befinden sich anschließend in Überdeckung mit den Öffnungen 21 des Bezuges 49. Zur Montageerleichterung werden die Rahmenteile 50, 51 dadurch gegeneinander stabilisiert, daß ein nicht dargestellter Montagehilfsstift durch mittlere Zentrierbohrungen 63 der Flansch-Stege 55, 56 geschoben wird. Anschließend wird die auf diese Weise vormontierte Rückenlehne 47 an die als Verbindungselemente dienenden Auflager 59, 60 angelegt, woraufhin die Befestigung des Rahmens 48 mit Bezug 49 am Mittel-Stab 45 dadurch erfolgt, daß Schrauben 64 durch die Bohrungen 58 in den Auflagern 59, 60 in die Bohrungen 57 der aufeinander liegenden Flansch-Stege 55, 56 geschraubt werden, wodurch gleichzeitig auch eine feste Verbindung der Rahmenteile 50, 51 miteinander erreicht wird. Zur Stabilisierung der Rückenlehne 47 werden dann noch Schrauben 65 durch die Bohrungen 61 im Quer-Stab 46 in die Bohrungen 62 in den Stegen 54 geschraubt.The assembly takes place in such a way that - as already described - first Leg 52 and then the web 54 and then the other leg 53 one Frame part 50 or 51 through an insertion opening 21 of the cover 49 in the welt seams 17, 18, 19 and then the other frame part 51 in is pushed into the welt seams 17, 20, 19 in the same way. Here too the welt seams 17 to 20 are wider than the legs 52, 53 and the webs 54 to allow insertion. The flange webs 54, 55 are located then in register with the openings 21 of the cover 49. To facilitate assembly, the frame parts 50, 51 are thereby stabilized against each other that a mounting aid pin, not shown pushed through middle center holes 63 of the flange webs 55, 56 becomes. Then the backrest 47 which is preassembled in this way is applied to the supports 59, 60 serving as connecting elements, whereupon the attachment of the frame 48 with reference 49 to the central rod 45 in that screws 64 through the holes 58 in the supports 59, 60 in the bores 57 of the flange webs lying one on top of the other 55, 56 can be screwed, which also means a firm connection the frame parts 50, 51 are reached together. For stabilization the backrest 47 are then screws 65 through the holes 61 screwed in the crossbar 46 into the holes 62 in the webs 54.

Auch bei dieser Ausgestaltung werden die Öffnungen 21 des Bezuges 49 vollständig durch die Auflager 59, 60 abgedeckt, so daß sie unsichtbar werden. Die Schrauben 65 werden durch den Bezug 49 hindurchgeschraubt; für sie müssen keine Öffnungen im Bezug vorgesehen werden. Auch beim Ausführungsbeispiel nach den Fig. 5 und 6 kann der Rückenlehnen-Rahmen 48 insgesamt gebogen ausgebildet sein, d. h. die horizontalen Schenkel 52, 53 sind nach hinten zum Rückenlehnen-Träger 44 hin durchgebogen, während die vertikalen Stege 54 zum Sitz 40 hin durchgebogen sind.In this embodiment, too, the openings 21 of the cover 49 completely covered by the supports 59, 60 so that they are invisible become. The screws 65 are screwed through the cover 49; no openings in the cover have to be provided for them. The backrest frame can also be used in the exemplary embodiment according to FIGS. 5 and 6 48 be curved overall, d. H. the horizontal Legs 52, 53 are towards the back toward the backrest support 44 bent, while the vertical webs 54 bent towards the seat 40 are.

Claims (10)

  1. Back of a chair, comprising:
    a back frame (7) comprising a first and a second frame part (9, 10; 50, 51) each being C-shaped and having two legs (13, 14; 52, 53) and a bar (15; 54), said frame parts being joined with each other on the free ends of said legs (13, 14; 52, 53) on connecting locations,
    a cover (8; 49), comprising:
    four rand seams (17 through 20) for receiving said legs (13, 14; 52, 53) and said bar (15; 54) of the first and the second frame parts (9, 10; 50, 51),
    at least one insertion opening (21) in a rand seam (17) on a joint location of said frame parts (9, 10; 50, 51), and
    two connecting members (22; 59, 60)
    by means of which said frame parts (9, 10; 50, 51) are connected with each other at the joint locations, and
    at least one of which covers said at least one insertion opening (21).
  2. Back according to claim 1, characterized in that two insertion openings (21) are provided at the joint locations and each being covered by a respective connecting member (22; 59, 60).
  3. Back according to any of claims 1 or 2, characterized in that said connecting members (22; 59, 60) are formed as parts allowing their being connected with a chair.
  4. Back according to claim 3, characterized in that said connecting members (22) are formed as parts allowing their being connected with arm rests (5) of a chair.
  5. Back according to claim 3, characterized in that said connecting members (22) are formed on a back support (44) as support bearings (59, 60) for said back frame (48).
  6. Back according to any of claims 1 through 5, characterized in that said frame parts (9, 10) are made of metal tubes (11).
  7. Back according to any of claims 1 through 5, characterized in that said frame parts (50, 51) are made of fiber-reinforced plastic.
  8. Back according to claim 4, characterized in that said connecting members (22) are provided with at least one supporting pin (29, 30) for providing a connection with at least one tube (31, 32) of a chair.
  9. Back according to claim 4, characterized in that said legs (13, 14) of said frame parts (9, 10) are arranged perpendicularly while said bars (13) are arranged horizontally.
  10. Back according to claim 5, characterized in that said legs (52, 53) of said frame parts (50, 51) are arranged horizontally while said bars (54) are arranged perpendicularly.
EP02020040A 2001-10-02 2002-09-06 Backrest for a chair Expired - Lifetime EP1300101B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10148645 2001-10-02
DE10148645A DE10148645A1 (en) 2001-10-02 2001-10-02 Backrest for a chair

Publications (3)

Publication Number Publication Date
EP1300101A2 EP1300101A2 (en) 2003-04-09
EP1300101A3 EP1300101A3 (en) 2003-11-12
EP1300101B1 true EP1300101B1 (en) 2004-08-18

Family

ID=7701154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020040A Expired - Lifetime EP1300101B1 (en) 2001-10-02 2002-09-06 Backrest for a chair

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US (1) US6698839B2 (en)
EP (1) EP1300101B1 (en)
CN (1) CN1408301A (en)
AT (1) ATE273642T1 (en)
CA (1) CA2405252A1 (en)
DE (2) DE10148645A1 (en)

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Also Published As

Publication number Publication date
US20030062756A1 (en) 2003-04-03
ATE273642T1 (en) 2004-09-15
EP1300101A3 (en) 2003-11-12
EP1300101A2 (en) 2003-04-09
US6698839B2 (en) 2004-03-02
CA2405252A1 (en) 2003-04-02
DE10148645A1 (en) 2003-04-10
CN1408301A (en) 2003-04-09
DE50200848D1 (en) 2004-09-23

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