EP0765621B1 - Chair with a device for adjusting the basic sitting height - Google Patents

Chair with a device for adjusting the basic sitting height Download PDF

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Publication number
EP0765621B1
EP0765621B1 EP19960113978 EP96113978A EP0765621B1 EP 0765621 B1 EP0765621 B1 EP 0765621B1 EP 19960113978 EP19960113978 EP 19960113978 EP 96113978 A EP96113978 A EP 96113978A EP 0765621 B1 EP0765621 B1 EP 0765621B1
Authority
EP
European Patent Office
Prior art keywords
chair
connecting element
sleeve
column
foot
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
EP19960113978
Other languages
German (de)
French (fr)
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EP0765621A1 (en
Inventor
Oskar Knaus
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.)
Interstuhl Bueromoebel GmbH and Co KG
Original Assignee
Interstuhl Bueromoebel GmbH and Co KG
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 Interstuhl Bueromoebel GmbH and Co KG filed Critical Interstuhl Bueromoebel GmbH and Co KG
Publication of EP0765621A1 publication Critical patent/EP0765621A1/en
Application granted granted Critical
Publication of EP0765621B1 publication Critical patent/EP0765621B1/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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/28—Chairs or stools with vertically-adjustable seats with clamps acting on vertical rods
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs

Definitions

  • the invention relates to a chair with the features of the preamble of claim 1.
  • a chair is from the GB-A-2 021 940 known and has a height adjustment the seat, for this purpose a hollow body and connecting element provided with circumferential ribs is provided. The ribs engage in the grooves Chair column.
  • the length of the Chair column can be adjusted by the chair column inserted more or less far into the connecting element and is locked with the ribs of the connecting element. On this is a gradual adjustment of the chair column length and thus the basic position of the seat is possible, however this type of adjustment is expensive.
  • the invention has for its object an adjustment the basic position of the seat of chairs create that is structurally simple and easy to use.
  • the invention is based on a device of the type mentioned Kind with the characteristics of the characterizing part of the claim 1 solved.
  • the sleeve tapers downwards and the connecting element an appropriately tapered Have outside diameter.
  • the fit between the connecting element and the sleeve also serves in addition, the once selected setting between the connecting element and secure chair column.
  • the connecting element is designed as a spiral, which in the external thread on the Chair column is insertable. This is due to the snug fit between Connection element and sleeve of the chair foot a clamp connection between the connecting element and the chair column a corresponding length compensation of the spiral is possible.
  • the external thread for the connecting element must be can not be arranged directly on the chair column, but can also be molded into a plastic tube with which the chair column is encased.
  • a plastic tube offers the The advantage that conventional chairs can be adjusted without them according to the basic position with the adjustment mechanism the invention can be retrofitted.
  • the manufacture of such a plastic tube can be done from two half-shells.
  • the solution according to the invention for the continuous adjustment of the The basic position of the seat height of office and work chairs is highly variable with extremely low design effort enables the user of the chair to easily do this any number of times according to their respective wishes or the given Adapt workplace requirements.
  • Such an adjustable one Chair is also different in all norms Customizable to countries. In the youth chair area is also through the adjustment mechanism ensures that the chair grows with the child.
  • a tube 10 is shown, in which one is not closer shown column of an office or work chair can be used is.
  • the tube 10 is made from two half-shells and has an external thread 11.
  • a connecting element 14 is provided in the chair base as a hollow cylindrical sleeve with a conical downwards tapered outer diameter is executed.
  • This Sleeve 14 is in a correspondingly conically shaped sleeve 15 of the base 13 insertable.
  • the sleeve 14 limits a central through opening in the star base 13.
  • the connecting element 14 has on its inside one from FIG. 1 not visible internal thread that is in the external thread 11 of the tube 10 is insertable.
  • blind slots 17 receives the connecting element 14 has a certain elasticity, which after Insert the connecting element 14, the tube 10 and the therein arranged chair column in the sleeve 15 of the star base 13 a clamp connection between the connecting element 14 and the tube 10 causes, so that the basic setting of Seat height can no longer be adjusted automatically. That too Tube 10 is provided with blind slots 18 which are analog Way a clamp connection between the tube 10 and one enable the chair column inserted in it.
  • Fig. 2 shows the connecting element 14 'according to the invention, in the form of a spiral, the outer diameter also tapers conically downwards and thus also for use in the conically shaped sleeve 15 of the Base 13 according to FIG. 1 is suitable.
  • On the inside of the Spirals are either a circumferential depression or elevation 16 provided, which thus form an internal thread that in the external thread 11 of the tube 10 according to FIG. 1 can be carried out.
  • 2 is also an interference fit with the connecting element 14 ' possible between connecting element 14 'and tube 10.
  • To Inserting the element 14 'in the sleeve 15 is on the External surface of the spiral 14 'acting pressure to a change in length of the spiral, which makes it tighter around the Tube 10 closes and thus the set seat height position locked.

Landscapes

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

Description

Die Erfindung betrifft einen Stuhl mit den Merkmalen des Oberbegriffs des Anspruchs 1. Ein solcher Stuhl ist aus der GB-A-2 021 940 bekannt und verfügt über eine Höhenverstellmöglichkeit der Sitzfläche, wobei hierzu ein als Hohlkörper ausgebildetes und mit umlaufenden Rippen versehenes Verbindungselement vorgesehen ist. Die Rippen greifen dabei in Nuten der Stuhlsäule ein. Beim Zusammenbau des Stuhls kann die Länge der Stuhlsäule dadurch eingestellt werden, dass die Stuhlsäule mehr oder weniger weit in das Verbindungselement eingeschoben und mit den Rippen des Verbindungselements verrastet wird. Auf diese Weise ist eine stufenweise Einstellung der Stuhlsäulenlänge und damit der Grundposition der Sitzfläche möglich, doch ist diese Art der Einstellung aufwendig.The invention relates to a chair with the features of the preamble of claim 1. Such a chair is from the GB-A-2 021 940 known and has a height adjustment the seat, for this purpose a hollow body and connecting element provided with circumferential ribs is provided. The ribs engage in the grooves Chair column. When assembling the chair, the length of the Chair column can be adjusted by the chair column inserted more or less far into the connecting element and is locked with the ribs of the connecting element. On this is a gradual adjustment of the chair column length and thus the basic position of the seat is possible, however this type of adjustment is expensive.

Der Erfindung liegt die Aufgabe zugrunde, eine Einstellmöglichkeit der Grundposition der Sitzfläche von Stühlen zu schaffen, die konstruktiv einfach und leicht zu bedienen ist.The invention has for its object an adjustment the basic position of the seat of chairs create that is structurally simple and easy to use.

Die Erfindung wird mit einer Einrichtung der eingangs genannten Art mit den Merkmalen des kennzeichnenden Teils des Anspruchs 1 gelöst. Durch einfaches Verdrehen der Stuhlsäule gegenüber dem Verbindungselement kann somit die Grundeinstellung der Sitzhöhe stufenlos verstellt werden. Wird die Stuhlsäule weiter in das Verbindungselement eingedreht, so lässt sich die Grundposition entsprechend erniedrigen. Durch ein Ausdrehen der Stuhlsäule aus dem Verbindungselement ist hingegen ein Anheben der Grundposition möglich. Das Verbindungselement kann dabei vorteilhafterweise in eine Hülse am Stuhlfuß einsetzbar sein. Begrenzt die Hülse dabei eine zentrale Durchgangsöffnung des Stuhlfußes und ist der Stuhlfuß als Fußkreuz ausgebildet, so ist eine Verstellmöglichkeit der Grundposition der Sitzflächenhöhe in besonders großem Umfang möglich, da zwischen dem zentralen Bereich des Fußkreuzes und dem Boden ausreichend Spielraum für ein Tieferstellen der Sitzfläche durch vermehrtes Eindrehen der Stuhlsäule in die Hülse vorhanden ist. Für eine äußerst einfache Verbindung kann die Hülse sich nach unten hin konisch verjüngen und das Verbindungselement einen sich entsprechend konisch verjüngenden Außendurchmesser aufweisen. Hierdurch ist eine einfache Steckverbindung zwischen Verbindungselement und Stuhlfuß möglich. Der Passsitz zwischen Verbindungselement und Hülse dient außerdem dazu, die einmal gewählte Einstellung zwischen Verbindungselement und Stuhlsäule zu sichern. Das Verbindungselement ist als Spirale ausgebildet, die in das Außengewinde an der Stuhlsäule einführbar ist. Dabei ist durch den Passsitz zwischen Verbindungselement und Hülse des Stuhlfußes eine Klemmverbindung zwischen Verbindungselement und Stuhlsäule über einen entsprechenden Längenausgleich der Spirale möglich.The invention is based on a device of the type mentioned Kind with the characteristics of the characterizing part of the claim 1 solved. By simply twisting the chair column compared to the connecting element, the basic setting can thus the seat height can be adjusted continuously. Will the chair column screwed further into the connecting element, so leaves the basic position decrease accordingly. Through a However, unscrewing the chair column from the connecting element the basic position can be raised. The connecting element can advantageously in a sleeve on the chair foot be applicable. This limits the sleeve to a central one Through opening of the chair foot and is the chair foot as Cross base, so an adjustment is the Basic position of the seat height in a particularly large extent possible because between the central area of the base and sufficient ground for the floor to lower the Seat by turning the chair column into the Sleeve is present. For an extremely simple connection the sleeve tapers downwards and the connecting element an appropriately tapered Have outside diameter. This is a simple plug connection possible between connecting element and chair foot. The fit between the connecting element and the sleeve also serves in addition, the once selected setting between the connecting element and secure chair column. The connecting element is designed as a spiral, which in the external thread on the Chair column is insertable. This is due to the snug fit between Connection element and sleeve of the chair foot a clamp connection between the connecting element and the chair column a corresponding length compensation of the spiral is possible.

Das Außengewinde für das Verbindungselement muss im Übrigen nicht direkt auf der Stuhlsäule angeordnet sein, sondern kann auch in ein Kunststoffrohr eingeformt sein, mit dem die Stuhlsäule ummantelt ist. Ein solches Kunststoffrohr bietet den Vorteil, dass damit auch herkömmliche Stühle ohne Verstellmöglichkeit der Grundposition mit dem Verstellmechanismus gemäß der Erfindung nachgerüstet werden können. Zur Vereinfachung der Fertigung eines solchen Kunststoffrohres kann dieses aus zwei Halbschalen zusammengesetzt sein. Incidentally, the external thread for the connecting element must be can not be arranged directly on the chair column, but can also be molded into a plastic tube with which the chair column is encased. Such a plastic tube offers the The advantage that conventional chairs can be adjusted without them according to the basic position with the adjustment mechanism the invention can be retrofitted. For simplification The manufacture of such a plastic tube can be done from two half-shells.

Die erfindungsgemäße Lösung zur stufenlosen Verstellung der Grundposition der Sitzhöhe von Büro- und Arbeitsstühlen ist bei konstruktiv äußerst geringem Aufwand hoch variabel und ermöglicht dem Benutzer des Stuhls, diesen auf einfache Weise beliebig häufig seinen jeweiligen Wünschen bzw. den vorgegebenen Arbeitsplatzanforderungen anzupassen. Ein derart verstellbarer Stuhl ist auch auf sämtliche Normen in unterschiedlichen Ländern anpassbar. Im Jugendstuhlbereich ist außerdem durch den Verstellmechanismus ein "Mitwachsen" des Stuhls gewährleistet. The solution according to the invention for the continuous adjustment of the The basic position of the seat height of office and work chairs is highly variable with extremely low design effort enables the user of the chair to easily do this any number of times according to their respective wishes or the given Adapt workplace requirements. Such an adjustable one Chair is also different in all norms Customizable to countries. In the youth chair area is also through the adjustment mechanism ensures that the chair grows with the child.

Nachfolgend werden bevorzugte Ausführungsbeispiele einer erfindungsgemäßen Einrichtung anhand der Zeichnung näher erläutert.In the following there are preferred embodiments of an inventive one Device explained in more detail using the drawing.

Es zeigen:

Fig. 1
eine Explosionszeichnung einer Einrichtung; die teilweise vom Gegenstand des unabhängigen Anspruchs abgedeckt ist.
Fig. 2
eine perspektivische Ansicht des Verbindungselementes gemäß der Erfindung.
Show it:
Fig. 1
an exploded view of a device; which is partially covered by the subject of the independent claim.
Fig. 2
a perspective view of the connecting element according to the invention.

In Fig. 1 ist ein Rohr 10 gezeigt, in das eine nicht näher dargestellte Stuhlsäule eines Büro- oder Arbeitsstuhles einsetzbar ist. Das Rohr 10 ist aus zwei Halbschalen gefertigt und weist ein Außengewinde 11 auf. Zur Verbindung des Rohres 10 und der Stuhlsäule mit einem als Fußkreuz 13 ausgebildeten Stuhlfuß ist ein Verbindungselement 14 vorgesehen, daß als hohlzylindrische Hülse mit einem sich nach unten hin konisch verjüngenden Außendurchmesser ausgeführt ist. Diese Hülse 14 ist in eine entsprechend konisch geformte Hülse 15 des Fußkreuzes 13 einsteckbar. Die Hülse 14 begrenzt dabei eine zentrale Durchgangsöffnung im Fußkreuz 13. Das Verbindungselement 14 weist auf seiner Innenseite ein aus Fig. 1 nicht ersichtliches Innengewinde auf, das in das Außengewinde 11 des Rohres 10 einführbar ist. Durch Ein- bzw. Ausdrehen des Rohres 10 aus dem Verbindungselement 14 ist eine stufenlose Tiefer- bzw. Höherstellung der im Rohr 10 eingesetzten Stuhlsäule und damit auch der auf dieser angeordneten Sitzfläche des Stuhles möglich. Wird das Rohr 10 sehr weit in die Hülse 14 eingedreht, so steht das Rohr und die darin angeordnete Stuhlsäule unten über die Hülse 15 des Fußkreuzes 13 über, wo ausreichend Platz hierfür vorhanden ist. Zur Arretierung einer einmal eingestellten Sitzhöhenposition weist das Verbindungselement 14 Sackschlitze 17 auf, die wechselseitig zu einer der Stirnflächen 14.1 bzw. 14.2 des Verbindungsclementes 14 hin offen sind. Durch diese Sackschlitze 17 erhält das Verbindungselement 14 eine gewisse Elastizität, die nach Einsetzen des Verbindungselementes 14, des Rohres 10 sowie der darin angeordneten Stuhlsäule in die Hülse 15 des Fußkreuzes 13 eine Klemmverbindung zwischen dem Verbindungselement 14 und dem Rohr 10 bewirkt, so daß sich die Grundeinstellung der Sitzhöhe selbsttätig nicht mehr verstellen kann. Auch das Rohr 10 ist mit Sackschlitzen 18 versehen, die auf analoge Weise eine Klemmverbindung zwischen dem Rohr 10 und einer darin eingesetzten Stuhlsäule ermöglichen.In Fig. 1, a tube 10 is shown, in which one is not closer shown column of an office or work chair can be used is. The tube 10 is made from two half-shells and has an external thread 11. For connecting the pipe 10 and the chair column with a base 13 formed A connecting element 14 is provided in the chair base as a hollow cylindrical sleeve with a conical downwards tapered outer diameter is executed. This Sleeve 14 is in a correspondingly conically shaped sleeve 15 of the base 13 insertable. The sleeve 14 limits a central through opening in the star base 13. The connecting element 14 has on its inside one from FIG. 1 not visible internal thread that is in the external thread 11 of the tube 10 is insertable. By screwing in or out the tube 10 from the connecting element 14 is a stepless Deeper or higher production of those used in the pipe 10 Chair column and thus also the seating surface arranged on it of the chair possible. The tube 10 is very far into the Screwed sleeve 14, the tube and the one located therein Chair column below over the sleeve 15 of the base 13 about where there is enough space for this. For locking Once a seat height position has been set, this shows Connection element 14 blind slots 17, which are mutually to one of the end faces 14.1 or 14.2 of the connecting element 14 are open. Through these blind slots 17 receives the connecting element 14 has a certain elasticity, which after Insert the connecting element 14, the tube 10 and the therein arranged chair column in the sleeve 15 of the star base 13 a clamp connection between the connecting element 14 and the tube 10 causes, so that the basic setting of Seat height can no longer be adjusted automatically. That too Tube 10 is provided with blind slots 18 which are analog Way a clamp connection between the tube 10 and one enable the chair column inserted in it.

Fig. 2 zeigt das Verbindungselement 14' gemäß der Erfindung, in Form einer Spirale, deren Außendurchmesser sich ebenfalls nach unten hin konisch verjüngt und somit ebenfalls zum Einsatz in die konisch geformte Hülse 15 des Fußkreuzes 13 nach Fig. 1 geeignet ist. Auf der Innenseite der Spirale sind entweder eine umlaufende Vertiefung oder Erhebung 16 vorgesehen, die somit ein Innengewinde bilden, das in das Außengewinde 11 des Rohres 10 nach Fig. 1 cinführbar ist. Auch mit dem Verbindungselement 14' nach Fig. 2 ist ein Preßsitz zwischen Verbindungselement 14' und Rohr 10 möglich. Nach Einsetzen des Elementes 14' in die Hülse 15 wird der auf die Außenfläche der Spirale 14' wirkende Druck zu einer Längenänderung der Spirale führen, wodurch sich diese fester um das Rohr 10 schließt und somit die eingestellte Sitzhöhenposition arretiert.Fig. 2 shows the connecting element 14 'according to the invention, in the form of a spiral, the outer diameter also tapers conically downwards and thus also for use in the conically shaped sleeve 15 of the Base 13 according to FIG. 1 is suitable. On the inside of the Spirals are either a circumferential depression or elevation 16 provided, which thus form an internal thread that in the external thread 11 of the tube 10 according to FIG. 1 can be carried out. 2 is also an interference fit with the connecting element 14 ' possible between connecting element 14 'and tube 10. To Inserting the element 14 'in the sleeve 15 is on the External surface of the spiral 14 'acting pressure to a change in length of the spiral, which makes it tighter around the Tube 10 closes and thus the set seat height position locked.

Claims (6)

  1. Chair with a device for adjusting the basic position of the sitting height, and the seat surface is arranged on top of a chair column which is attachable to a chair foot (13), and a connecting element (14, 14
    Figure 00080001
    ) designed as a hollow structure is arranged between the chair column and the chair foot (13), characterised in that the connecting element (14.1) is provided with an internal thread (16) and designed as a spiral which engages a corresponding outside thread (11) at the chair column.
  2. Chair according to Claim 1, characterised in that the connecting element (14,14 ) is insertable into a sleeve (15) on the chair foot (13).
  3. Chair according to Claim 2, characterised in that the sleeve (15) defines a central passage opening of a cross-shaped foot (13).
  4. Chair according to Claim 2 or 3, characterised in that the sleeve (15) narrows conically downwards, and the connecting element (14,14 ) has an outside diameter which correspondingly narrows conically.
  5. Chair according to one of Claims 1 to 4, characterised in that the chair column is encased by a plastic tube (10) with an outside thread (11) for the connecting element (14,14 ).
  6. Chair according to Claim 5, characterised in that the plastic tube (10) is composed of two semi-shells.
EP19960113978 1995-09-30 1996-08-31 Chair with a device for adjusting the basic sitting height Expired - Lifetime EP0765621B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29515607U DE29515607U1 (en) 1995-09-30 1995-09-30 Device for basic adjustment of the seat height of chairs
DE29515607U 1995-09-30

Publications (2)

Publication Number Publication Date
EP0765621A1 EP0765621A1 (en) 1997-04-02
EP0765621B1 true EP0765621B1 (en) 2001-07-11

Family

ID=8013626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960113978 Expired - Lifetime EP0765621B1 (en) 1995-09-30 1996-08-31 Chair with a device for adjusting the basic sitting height

Country Status (2)

Country Link
EP (1) EP0765621B1 (en)
DE (1) DE29515607U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20110068A1 (en) * 2011-04-29 2012-10-30 Calligaris Spa DEVICE FOR FIXING A SEATING, SUPPORT OR SIMILAR PLAN, WITH A BEARING STRUCTURE AND ITS FIXING PROCEDURE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1654775A1 (en) * 1967-08-17 1971-03-04 Wilkhahn Wilkening & Hahne Height-adjustable swivel chair
GB1423130A (en) * 1971-12-29 1976-01-28 Remploy Ltd Resilient mountings of adjustable length
SE418144B (en) * 1978-05-31 1981-05-11 Kinnarps Kontorsmobler Ab DEVICE IN A CHAIR WITH A SAID CHAIR SPINDLE
DE4341069A1 (en) * 1993-12-02 1995-06-08 Hansen Fritz As Height adjustment device for the seat of an office chair

Also Published As

Publication number Publication date
EP0765621A1 (en) 1997-04-02
DE29515607U1 (en) 1995-11-30

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