EP0743033B1 - Height adjustment mechanism for furniture, especially tables - Google Patents

Height adjustment mechanism for furniture, especially tables Download PDF

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Publication number
EP0743033B1
EP0743033B1 EP96105698A EP96105698A EP0743033B1 EP 0743033 B1 EP0743033 B1 EP 0743033B1 EP 96105698 A EP96105698 A EP 96105698A EP 96105698 A EP96105698 A EP 96105698A EP 0743033 B1 EP0743033 B1 EP 0743033B1
Authority
EP
European Patent Office
Prior art keywords
foot
ring
tube
height adjustment
sleeve
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
EP96105698A
Other languages
German (de)
French (fr)
Other versions
EP0743033A1 (en
Inventor
Reinhold Forster
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.)
Haefele SE and Co KG
Original Assignee
Haefele SE 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 Haefele SE and Co KG filed Critical Haefele SE and Co KG
Publication of EP0743033A1 publication Critical patent/EP0743033A1/en
Application granted granted Critical
Publication of EP0743033B1 publication Critical patent/EP0743033B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B91/00Feet for furniture in general
    • A47B91/02Adjustable feet
    • A47B91/022Adjustable feet using screw means
    • A47B91/024Foot attached to a rotating bolt supported in an internal thread

Definitions

  • the adjustment device described is Type the internal or external thread on the one hand the pipe or the foot and on the other hand divided into an adapter sleeve, which is non-rotatable but axially displaceable with that other threaded part tube or foot is connected, wherein between this and the clamping sleeve the same by turning expanding clamping ring is mounted.
  • the twisting of the clamping ring becomes the two threaded parts like this pressed apart that the internal and external threads mutually jam.
  • the clamping ring one or more wedges and the one with the split thread Part and the adapter sleeve sliding surfaces for the or Wedges on.
  • the foot is with External thread and the pipe as well as the adapter sleeve with the split Provided with internal thread.
  • a particularly simple embodiment results when the internal thread part of the pipe and the sliding surfaces for the wedges a press-in sleeve arranged in the tube are provided. To this You can use any tube without special processing use for this purpose.
  • the adjusting device according to FIG. 1 consists of a tube 1, which, for example, in a manner not shown on a Table top is attached.
  • a press-in sleeve 2 used, in the internal thread 3 a Table base 4 is screwed with an external thread 5.
  • an adapter sleeve 6 Internal thread 7 screwed, the internal thread part 3 and the internal thread part represent 7 parts of an overall thread. Is located between the crimp sleeve 2 and the clamping sleeve 6 another clamping ring 8, the functions of which are explained below will.
  • On the tube 1 there is also a tubular cover 9 slidably mounted, which as shown in Figure 2 with the lower End 10 of the foot 5 is firmly connected.
  • the Adapter sleeve 6 is rotatable but axially with the press-in sleeve 2 slidably connected. For this purpose approaches 11 of the clamping sleeve 6 in recesses 12 of the press-in sleeve 2, so that both parts in Direction of rotation are connected, but still a larger axial Game is possible.
  • the clamping ring 8 is rotatable between the press-in sleeve 2 and the clamping sleeve 6 and with 3 wedges 13th provided which on the sliding surfaces 14 of the press-in sleeve 2 and the sliding surfaces 15 of the clamping sleeve 6 lie.
  • the clamping ring presses the wedges 13, the clamping sleeve 6 and the press-in sleeve 2 apart, so that no play between the external thread 5 of the table base 4 and the internal thread parts 3 and 7 the press-in sleeve 2 in the clamping sleeve 7 more and the thread jammed together. In this way, one stable connection between the tube 1 and the foot 5 created.
  • a scale 16 is provided on the foot 4 for precise height adjustment.
  • the press-in sleeve 2 also has a locking lug 17 on, which with a not seen from the drawing the Scale 16 opposite groove of the foot 4 cooperates so that a stop position is reached with each full revolution, and in this way an exact height adjustment is possible.
  • the foot 4 has one at its end facing the press-in sleeve 2 Safety pin 18, which in the thread 5 of the foot 4th protrudes and a complete unscrewing of the foot 4 inevitably prevented.

Abstract

The support foot for the furniture leg (1) has an outer thread (5) which is threaded into the threaded ring (2) fitted to the bottom of the leg. A tensioner ring (8) between the threaded ring and a clamping ring (6), with inner thread, controls the relative spacing of the threaded ring and the clamping ring. The tensioner ring is released to allow easy adjustment of the threaded foot and is moved into the tension position to force the threaded ring and the clamping ring to secure grip the thread, without play. The clamping ring is rotationally coupled to the threaded ring by axial tags. The tensioner ring is coupled to the threaded ring by wedge profiles which alter the relative spacing of the two ring by rotating the tensioner ring. An outer sleeve (9) covers the adjustable foot and is slid up to effect the adjustment.

Description

Es sind bereits gattungsgemäße Höhenverstellvorrichtungen für Tische bekannt, bei denen ein mit Außengewinde versehener Fuß im Innengewinde eines Rohres drehbar gelagert ist, wobei durch die Verdrehung eines der Teile eine Höhenverstellung erfolgt. Derartige Tischfüße mit einem größeren Verstellbereich neigen jedoch einerseits durch das immer vorhandene Spiel im Gewinde und andererseits durch die geringe Überdeckung der Gewindeteile im Endbereich zum Wackeln. Da dies bei Tischen, insbesondere bei Schreibtischen, äußerst nachteilig ist, liegt der vorliegenden Erfindung die Aufgabe zugrunde, das zum Verstellen des Fußes notwendige Spiel zwischen den Gewindeteilen auf einfache Weise auszuschalten, so daß der Fuß auch im Endbereich so stabilisiert ist, daß ein fester Stand des Tisches in jeder Höhenlage erreicht wird.Generic height adjustment devices for tables are already known, in which an externally threaded foot in the internal thread of a Pipe is rotatably supported, the rotation of a the parts are adjusted in height. Such table feet with a larger adjustment range, on the one hand, tend to be due to the always existing play in the thread and on the other hand due to the low Coverage of the threaded parts in the end area for wobbling. There this is extremely disadvantageous for tables, especially desks is the object of the present invention, the game necessary to adjust the foot between the Turn off threaded parts in a simple way, so that the foot is also stabilized in the end area so that a firm stand of the Tables are reached at any altitude.

Hierzu ist erfindungsgemäß bei einer Verstellvorrichtung der beschriebenen Art das Innen- oder das Außengewinde einerseits auf das Rohr oder den Fuß und andererseits auf eine Spannhülse aufgeteilt, welche unverdrehbar aber axial verschiebbar mit dem das andere Gewindeteil aufweisenden Rohr oder Fuß verbunden ist, wobei zwischen diesem und der Spannhülse ein dieselben durch Drehverstellung auseinanderpressender Spannring gelagert ist. Durch die Verdrehung des Spannringes werden die beiden Gewindeteile so auseinandergedrückt, daß das Innen- und das Außengewinde gegenseitig verklemmen. Um die Vorrichtung in eine andere Höhenlage zu bringen, muß dann lediglich der Spannring in die entgegengesetzte Richtung gedreht werden, so daß sich wiederum ein Spiel zwischen den beiden aufgeteilten Gewindeteilen ergibt und eine Verstellung ermöglicht wird. Dabei ist es grundsätzlich nicht von Bedeutung, ob das Innen- oder das Außengewinde aufgeteilt wird und auf welchen der gegeneinander verstellbaren Teile das aufgeteilte Gewinde angeordnet ist.For this purpose, according to the invention, the adjustment device described is Type the internal or external thread on the one hand the pipe or the foot and on the other hand divided into an adapter sleeve, which is non-rotatable but axially displaceable with that other threaded part tube or foot is connected, wherein between this and the clamping sleeve the same by turning expanding clamping ring is mounted. By the twisting of the clamping ring becomes the two threaded parts like this pressed apart that the internal and external threads mutually jam. To move the device to a different altitude bring, then only the clamping ring in the opposite Direction are rotated, so that again a game between the two divided threaded parts and an adjustment is made possible. It is basically not important whether the internal or the external thread is divided and on which of the mutually adjustable parts the split thread is arranged.

Nach einem weiteren Merkmal der Erfindung weisen der Spannring ein oder mehrere Keile und das mit dem aufgeteilten Gewinde versehene Teil sowie die Spannhülse Gleitflächen für den oder die Keile auf. Bei einer bevorzugten Ausführungsform sind der Fuß mit Außengewinde und das Rohr sowie die Spannhülse mit dem aufgeteilten Innengewinde versehen.According to a further feature of the invention, the clamping ring one or more wedges and the one with the split thread Part and the adapter sleeve sliding surfaces for the or Wedges on. In a preferred embodiment, the foot is with External thread and the pipe as well as the adapter sleeve with the split Provided with internal thread.

Eine besonders einfache Ausführungsform ergibt sich, wenn der Innengewindeteil des Rohres und die Gleitflächen für die Keile an einer im Rohr angeordneten Einpreßhülse vorgesehen sind. Auf diese Weise kann man jedes beliebige Rohr ohne besondere Bearbeitung für diesen Zweck verwenden.A particularly simple embodiment results when the internal thread part of the pipe and the sliding surfaces for the wedges a press-in sleeve arranged in the tube are provided. To this You can use any tube without special processing use for this purpose.

Zur Verbindung der Spannhülse in Drehrichtung mit der Einpreßhülse, bei axialer Beweglichkeit gegeneinander, ist die Spannhülse mit axial überstehendem Ansätzen versehen, welche in entsprechende Ausnehmungen in der Einpreßhülse eingreifen. Da ein vollständiges Herausdrehen des Fußes aus dem Rohr bzw. der Einpreßhülse verhindert werden soll, ist der Fuß an seinem dem Rohr zugewandten Ende mit einem Sicherungszapfen versehen, welcher in den Gewindebereich hineinragt. Um ein Verschmutzen von Kleidungsstücken an dem unter Umständen mit Schmiermittel versehenen Gewinde des Fußes zu verhindern, trägt dieser eine Abdeckung, welche über das Rohr hinausragt und auf diesem verschiebbar ist. Weiterhin ist es zweckmäßig, wenn der Benutzer auf einfache Weise das Maß der Höhenverstellung erkennen kann. Zu diesem Zwecke ist an der Einpreßhülse eine Rastnase vorgesehen, welche mit einer Längsnut des Fußes zusammenwirkt. Bei jeder vollständigen Umdrehung des Fußes ergibt sich dann eine genau definierte Raststellung. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. Es stellen dar:

Figur 1
Die abgebrochene Explosionszeichnung eines Tischbeines mit verstellbarem Fuß,
Figur 2
einen Querschnitt der zusammengesetzten Teile nach Figur 1,
Figur 3
eine Unteransicht der Einpreßhülse,
Figur 4
einen Querschnitt nach Figur 3,
Figur 5
eine Draufsicht auf die Spannhülse,
Figur 6
eine Draufsicht auf den Spannring.
To connect the adapter sleeve in the direction of rotation with the press-in sleeve, with axial mobility relative to one another, the adapter sleeve is provided with axially projecting projections which engage in corresponding recesses in the press-in sleeve. Since a complete unscrewing of the foot from the pipe or the press-in sleeve is to be prevented, the foot is provided at its end facing the pipe with a safety pin which projects into the threaded area. In order to prevent clothing from getting dirty on the thread of the foot, which may be provided with lubricant, this carries a cover which projects beyond the tube and can be displaced thereon. Furthermore, it is expedient if the user can easily recognize the degree of height adjustment. For this purpose, a locking lug is provided on the press-in sleeve, which interacts with a longitudinal groove of the foot. With each complete turn of the foot there is a precisely defined locking position. The drawing shows an embodiment of the invention. They represent:
Figure 1
The broken exploded drawing of a table leg with an adjustable foot,
Figure 2
2 shows a cross section of the assembled parts according to FIG. 1,
Figure 3
a bottom view of the press-in sleeve,
Figure 4
4 shows a cross section according to FIG. 3,
Figure 5
a plan view of the adapter sleeve,
Figure 6
a top view of the clamping ring.

Die Verstellvorrichtung nach Figur 1 besteht aus einem Rohr 1, welches beispielsweise in nicht dargestellter Weise an einer Tischplatte befestigt ist. In das untere Ende des Rohres 1 ist eine Einpreßhülse 2 eingesetzt, in deren Innengewinde 3 ein Tischfuß 4 mit Außengewinde 5 eingeschraubt ist. Außerdem ist auf dem Außengewinde 5 des Tischfußes 4 noch eine Spannhülse 6 mit Innengewinde 7 aufgeschraubt, wobei das Innengewindeteil 3 und das Innengewindeteil 7 Teile eines Gesamtgewindes darstellen. Zwischen der Einpreißhülse 2 und der Spannhülse 6 befindet sich noch ein Spannring 8, dessen Funktionen weiter unten erläutert werden. Auf dem Rohr 1 ist eine ebenfalls rohrförmige Abdeckung 9 verschiebbar gelagert, welche wie Figur 2 zeigt mit dem unteren Ende 10 des Fußes 5 fest verbunden ist.The adjusting device according to FIG. 1 consists of a tube 1, which, for example, in a manner not shown on a Table top is attached. In the lower end of the tube 1 is a press-in sleeve 2 used, in the internal thread 3 a Table base 4 is screwed with an external thread 5. It is also on the external thread 5 of the table base 4 also has an adapter sleeve 6 Internal thread 7 screwed, the internal thread part 3 and the internal thread part represent 7 parts of an overall thread. Is located between the crimp sleeve 2 and the clamping sleeve 6 another clamping ring 8, the functions of which are explained below will. On the tube 1 there is also a tubular cover 9 slidably mounted, which as shown in Figure 2 with the lower End 10 of the foot 5 is firmly connected.

Zur Höhenverstellung des Fußes 5 wird dieser in die Spannhülse 6 und die Einpreßhülse 2 mehr oder weniger tief eingeschraubt. Die Spannhülse 6 ist dabei mit der Einpreßhülse 2 drehbar aber axial verschiebbar verbunden. Dazu greifen Ansätze 11 der Spannhülse 6 in Ausnehmungen 12 der Einpreßhülse 2 ein, so daß beide Teile in Drehrichtung verbunden sind, jedoch noch ein größeres axiales Spiel möglich ist. Der Spannring 8 ist drehbar zwischen der Einpreßhülse 2 und der Spannhülse 6 gelagert und mit 3 Keilen 13 versehen, welche auf den Gleitflächen 14 der Einpreßhülse 2 und den Gleitflächen 15 der Spannhülse 6 liegen. Durch Verdrehen des Spannringes pressen die Keile 13 die Spannhülse 6 und die Einpreßhülse 2 auseinander, so daß keinerlei Spiel zwischen dem Außengewinde 5 des Tischfußes 4 und den Innengewindeteilen 3 und 7 der Einpreßhülse 2 in der Spannhülse 7 mehr besteht und die Gewinde miteinander verklemmt werden. Auf diese Weise wird eine stabile Verbindung zwischen dem Rohr 1 und dem Fuß 5 geschaffen.To adjust the height of the foot 5, it is inserted into the clamping sleeve 6 and the press-in sleeve 2 screwed in more or less deeply. The Adapter sleeve 6 is rotatable but axially with the press-in sleeve 2 slidably connected. For this purpose approaches 11 of the clamping sleeve 6 in recesses 12 of the press-in sleeve 2, so that both parts in Direction of rotation are connected, but still a larger axial Game is possible. The clamping ring 8 is rotatable between the press-in sleeve 2 and the clamping sleeve 6 and with 3 wedges 13th provided which on the sliding surfaces 14 of the press-in sleeve 2 and the sliding surfaces 15 of the clamping sleeve 6 lie. By twisting the The clamping ring presses the wedges 13, the clamping sleeve 6 and the press-in sleeve 2 apart, so that no play between the external thread 5 of the table base 4 and the internal thread parts 3 and 7 the press-in sleeve 2 in the clamping sleeve 7 more and the thread jammed together. In this way, one stable connection between the tube 1 and the foot 5 created.

Um die beiden letztgenannten Teile wieder gegeneinander zu verstellen, wird der Spannring 8 in die entgegengesetzte Richtung gedreht, so daß die Spannhülse 6 wieder mit Spiel auf dem Außengewinde 5 des Fußes 4 zu liegen kommt.To adjust the latter two parts against each other again, the clamping ring 8 in the opposite direction rotated so that the clamping sleeve 6 again with play on the external thread 5 of the foot 4 comes to rest.

Zur genauen Höheneinstellung ist auf dem Fuß 4 eine Skala 16 vorgesehen. Außerdem weist die Einpreßhülse 2 noch eine Rastnase 17 auf, welche mit einer aus der Zeichnung nicht zu ersehenden der Skala 16 gegenüberliegenden Nut des Fußes 4 zusammenwirkt, so daß bei jeder vollen Umdrehung eine Raststellung erreicht wird, und auf diese Art und Weise eine genaue Höheneinstellung möglich ist.A scale 16 is provided on the foot 4 for precise height adjustment. In addition, the press-in sleeve 2 also has a locking lug 17 on, which with a not seen from the drawing the Scale 16 opposite groove of the foot 4 cooperates so that a stop position is reached with each full revolution, and in this way an exact height adjustment is possible.

Der Fuß 4 weist an seinem der Einpreßhülse 2 zugewandten Ende einen Sicherungszapfen 18 auf, welcher in das Gewinde 5 des Fußes 4 hineinragt und ein vollständiges Herausdrehen des Fußes 4 zwangsläufig verhindert.The foot 4 has one at its end facing the press-in sleeve 2 Safety pin 18, which in the thread 5 of the foot 4th protrudes and a complete unscrewing of the foot 4 inevitably prevented.

Claims (8)

  1. Height adjustment device for furniture, particularly tables, having a foot (4) which is longitudinally adjustable on or in a tube (1) or the like by means of an internal thread (3, 7) and an external thread (5), characterised in that the internal thread (3, 7) or the external thread (5) is divided between, on the one hand, the tube (1) or the foot (4) and, on the other hand, a clamping sleeve (6) which is connected in a non-rotatable but axially displaceable manner to the tube (1) or foot (4) having the other thread part (3, 7), a tension ring (8) being positioned between the tube or foot and the clamping sleeve (6) and urging them apart by rotary adjustment.
  2. Height adjustment device according to claim 1, characterised in that the tension ring (8) has one or more wedges (13) and the part (2, 6) provided with the divided thread (3, 7) and the clamping sleeve (6) have slide faces (14, 15) for the wedge(s) (13).
  3. Height adjustment device according to one or both of the preceding claims 1 and 2, characterised in that the foot (4) is provided with an external thread (5) and the tube (1, 2) and the clamping sleeve (6) are provided with the divided internal thread (3, 7).
  4. Height adjustment device according to claim 3, characterised in that the internal thread part (3) of the tube (1) and the slide faces (14) for the wedges (13) are provided in a press-in sleeve (2) arranged in the tube (1).
  5. Height adjustment device according to claim 4, characterised in that, to prevent rotation, the clamping sleeve (6) is provided with axially projecting extensions (11) which engage in corresponding recesses (12) of the press-in sleeve (2).
  6. Height adjustment device according to one or both of the preceding claims 4 and 5, characterised in that the press-in sleeve (2) has a snap-in pin (17) which co-operates with a longitudinal slot in the foot (4).
  7. Height adjustment device according to one or more of the preceding claims, characterised in that the foot (4) has, at its end facing the tube (1), a safety peg (18) which prevents complete unscrewing and which protrudes into the region of the foot's thread (5).
  8. Height adjustment device according to one or more of the preceding claims, characterised in that the foot (4) has a cover (9) which is arranged on the tube (1) in a longitudinally movable manner.
EP96105698A 1995-05-19 1996-04-11 Height adjustment mechanism for furniture, especially tables Expired - Lifetime EP0743033B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508298U 1995-05-19
DE29508298U DE29508298U1 (en) 1995-05-19 1995-05-19 Height adjustment device for furniture, especially tables

Publications (2)

Publication Number Publication Date
EP0743033A1 EP0743033A1 (en) 1996-11-20
EP0743033B1 true EP0743033B1 (en) 1998-07-29

Family

ID=8008259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105698A Expired - Lifetime EP0743033B1 (en) 1995-05-19 1996-04-11 Height adjustment mechanism for furniture, especially tables

Country Status (8)

Country Link
EP (1) EP0743033B1 (en)
JP (1) JP2775423B2 (en)
AT (1) ATE168863T1 (en)
AU (1) AU704861B2 (en)
BR (1) BR9602325A (en)
DE (2) DE29508298U1 (en)
DK (1) DK0743033T3 (en)
ES (1) ES2122736T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK171962B1 (en) * 1996-01-19 1997-09-01 Ideassociates Ltd Furniture legs with telescopic sliding section
IT1288298B1 (en) * 1996-02-14 1998-09-16 Vittorio Zuncheddu SCHOOL CHAIR AND SCHOOL BENCH
DE19709782C1 (en) * 1997-03-10 1998-03-05 Heitlinger Karl Leo Adjustable furniture foot or upright
IT1299271B1 (en) * 1998-05-18 2000-02-29 Leonardo Srl EXTENDABLE TABLE LEG WITH IMPROVED LOCKING DEVICE
JP3528605B2 (en) 1998-06-16 2004-05-17 コクヨ株式会社 desk
US7779547B2 (en) * 2004-06-07 2010-08-24 Robin Townsend Apparatus and method for setting furniture height
CN106195537B (en) * 2016-08-30 2018-11-20 苏州安泰空气技术有限公司 Cleaning apparatus clean type horizontal adjusting mechanism
USD802405S1 (en) 2016-10-28 2017-11-14 Varidesk, Llc Leg extender
CN109009624B (en) * 2018-08-09 2020-11-10 舒城县明公生猪养殖专业合作社 Medical rehabilitation device for treating legs of livestock
CN113576157A (en) * 2020-04-30 2021-11-02 林俪伊 Table leg
DE202020105570U1 (en) 2020-09-29 2022-01-11 Paul Henke GmbH & Co. Kommanditgesellschaft Height-adjustable furniture leg
CN116869277B (en) * 2023-09-01 2023-11-21 江苏慕林智造科技股份有限公司 Self-locking push rod of electric lifting table and self-locking method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224800A (en) * 1963-05-13 1965-12-21 Up Right Inc Adjustable supporting leg
US5536068A (en) * 1994-11-09 1996-07-16 Carex, Inc. Chair with adjustable legs
DK171962B1 (en) * 1996-01-19 1997-09-01 Ideassociates Ltd Furniture legs with telescopic sliding section

Also Published As

Publication number Publication date
JP2775423B2 (en) 1998-07-16
EP0743033A1 (en) 1996-11-20
AU704861B2 (en) 1999-05-06
DE59600375D1 (en) 1998-09-03
AU5233796A (en) 1996-11-28
DK0743033T3 (en) 1999-05-03
ES2122736T3 (en) 1998-12-16
BR9602325A (en) 1998-04-22
ATE168863T1 (en) 1998-08-15
DE29508298U1 (en) 1995-08-10
JPH08308655A (en) 1996-11-26

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