EP0203362B1 - Table réglable en hauteur ou similaire - Google Patents

Table réglable en hauteur ou similaire Download PDF

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Publication number
EP0203362B1
EP0203362B1 EP86105571A EP86105571A EP0203362B1 EP 0203362 B1 EP0203362 B1 EP 0203362B1 EP 86105571 A EP86105571 A EP 86105571A EP 86105571 A EP86105571 A EP 86105571A EP 0203362 B1 EP0203362 B1 EP 0203362B1
Authority
EP
European Patent Office
Prior art keywords
tube
spindle drive
lifting tube
roller
spindle
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
Application number
EP86105571A
Other languages
German (de)
English (en)
Other versions
EP0203362A1 (fr
Inventor
Franz Biggel
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.)
Roericht Hans Prof
Original Assignee
Roericht Hans Prof
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 Roericht Hans Prof filed Critical Roericht Hans Prof
Priority to AT86105571T priority Critical patent/ATE44442T1/de
Publication of EP0203362A1 publication Critical patent/EP0203362A1/fr
Application granted granted Critical
Publication of EP0203362B1 publication Critical patent/EP0203362B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle
    • A47B2009/043—Tables with tops of variable height with vertical spindle with means connecting the spindles of the various legs

Definitions

  • the invention relates to a device for the infinitely variable height adjustment of tables, chairs or the like, with an outer standpipe and an inner lift tube which can be axially displaced relative to one another by means of a roller guide and a spindle drive.
  • a large number of constructive solutions are known for adjusting the height of tables, chairs, footrests, tripods, etc.
  • the height adjustment of a table top can take place, for example, by means of a horizontal spindle, on which there is a scissor system that extends apart when the spindle rotates.
  • the height can be adjusted by means of a mere gas pressure spring, guide means for guiding the vertical movement of the table being necessary.
  • the height of a plate can also be adjusted by means of a rack and pinion guide, to which a guided gear wheel moves up and down.
  • the known devices for adjusting the height of a table or the like are not suitable for producing a table which can be used both standing and sitting, which is particularly robust and whose manufacturing costs are to be kept low by design measures. Furthermore, the known devices have unsightly, often disruptive actuating devices such as levers, linkages, etc.
  • the invention is therefore based on the object of avoiding the disadvantages of the known devices and, in particular, of creating a height adjustment device preferably for a work table which fully meets the requirements both when standing and when seated. Furthermore, the device should look low complex despite the height adjustability.
  • the invention has the advantage over the known devices that an extremely practical work table can be created with this, the height of which is easy to adjust, is locked in any position without additional aids and whose adjustment device offers maximum comfort by the foot control.
  • the device also has the advantage that it can be used equally well from all directions. Furthermore, due to the lack of operating elements, it offers a visually calm picture, i. H. a pleasing look.
  • the bearing of the lifting tube according to the invention by means of a roller guide allows unprocessed precision steel tubes to be used, and that the construction as a whole can be kept inexpensively.
  • the invention is shown in Figures 1 to 6 using a height-adjustable work table.
  • the height-adjustable work table consists of a table top 11 which is attached to a lifting tube 12.
  • the lifting tube 12 moves up and down in a standpipe 13, the guidance being taken over by a roller guide 14 mounted in two planes.
  • the upward and downward movement of the lifting tube 12 is carried out by a spindle drive 15, the spindle nut 16 of which is connected to the lifting tube 12.
  • the spindle is driven by a planetary gear 17, which is driven by a flywheel 18.
  • a base frame 19 serves as the base of the work table 10.
  • the height adjustment is supported by means of a gas spring 20.
  • the same task is performed by a compensating spring 21 designed as a compression spring in the exemplary embodiment according to FIG. 2, with an additional lower outer spring guide tube 22 and an upper, inner spring guide tube 23 is provided.
  • FIGS. 3 and 4 according to FIG. 1 has the same reference numerals for the same parts.
  • the top view according to FIG. 4 runs along the section line AA in FIG. 3.
  • a planetary gear 17 is provided, which consists of three at an angle of 120 ° around the spindle 15
  • friction wheels 24 are driven by the flywheel 18. which concentrically surrounds the friction wheels, the friction wheels 24 simultaneously serving as a guide for the flywheel and for transmitting the driving force to the spindle.
  • the flywheel 18 protrudes radially into an annular gap 25 which is formed below the standpipe by forming a shoulder.
  • the standpipe 13 itself is carried by the inwardly displaced pin suspension 26.
  • the three friction wheels 24 run on a ball bearing, not shown, and are connected by means of the fastening bolts 27 to the base frame 19 by means of the screw connection 28.
  • At least one of the fastening bolts 27 is designed as an eccentric, so that the play between the friction wheels 24 and the flywheel 18 can be adjusted.
  • the friction wheels 24 are designed as so-called "W wheels", so that the flywheel 18 is guided in the V-shaped central region.
  • the spindle 15 is driven via a pair of ring gears 29, which is in direct engagement with the friction wheels 24.
  • a play-free power transmission between ring gears 29 and friction wheels 24 is effected by means of plate springs 31.
  • the fixation is carried out by means of a nut with a locking washer 30.
  • the spindle 15 is supported in the lower area exclusively via the pair of ring gears 29 in the three friction wheels 24.
  • the spindle nut 16 has a cardanic suspension to compensate for tolerances.
  • Fig. 4 right part, the attachment of the gimbaled spindle nut is shown.
  • the fastening bolts 32 of the spindle nut 16 with the lifting tube 12 and a fastening bolt 33 (not shown further) for fastening the gimbal with the spindle nut 16 itself are shown in section.
  • the gimbal is indicated at 34.
  • the spindle nut 16 runs in the lower area against a stop 35. This run-up of the spindle nut to the stop must be ensured before the lifting tube 12 opens at the very bottom, since otherwise destructive forces in the area of the cardan suspension spindle - lower ring gear - friction wheel - would occur.
  • An additional ball bearing 36 serves as a support for the gas spring 20, which thereby experiences no transverse forces on the gas spring piston rod when the table is rotated.
  • This roller guide 14 consists of three polyamide rollers 37 arranged at an angle of 120 °, which are arranged in two planes 38, 39.
  • the connection of the six rollers 37 takes place via the roller cage 40, 42, and the rollers 37 are supported by means of passage brackets 41.
  • the dimensions of the rollers 37 are such that the lifting tube is braced over the entire tolerance range in relation to the standpipe.
  • smooth, play-free guidance can be achieved without further processing of the pipes.
  • H. only precision steel tubes need to be used as the lifting tube or standpipe, which do not have to be subjected to further machining. Due to this play-free dimensioning of the polyamide rollers 37 there are high radial forces between the lifting tube and the standpipe. The axial forces are still low because z.
  • B. a motor vehicle with a bearing weight of one ton perpendicular to this direction of force can be easily moved.
  • the design of the gas pressure spring 20 is dimensioned such that the weight of the table top 11 including the lifting tube 12 is kept in equilibrium so that the up and down movement of the table top 11 is made possible with the same minimal effort by means of the flywheel 18.
  • FIG. 5 shows a top view of FIG. 5, the left half of the figure showing the drive of the planetary friction gear, the right half of the figure showing the structure of the roller guide.
  • FIGS. 5 and 6 show the same reference numerals for the same parts as in the previous figures.
  • a loose bearing 43 with an anti-rotation device is provided in the upper part of the left half of the figure (FIG. 5a).
  • the right half of the figure (FIG. 5b) shows a rigid connection 44 of the inner spring guide tube 23 to the standpipe 13 and to the table top 11.
  • the spindle nut 16 In the case of the loose bearing 43 (FIG. 5a), it is sufficient to compensate for tolerances that a fixed spindle nut 16a is used.
  • the spindle nut 16 In the case of a rigid connection 44 according to the embodiment according to FIG. 5b, it is expedient for the spindle nut 16 to be designed as a nut with a cardanic suspension 34, in order to compensate for tolerances of the individual components and dimensional shifts during the course of movement.
  • the gimbal and the axial play serve in particular to compensate for manufacturing tolerances.
  • FIG. 5a an additional spindle guide 45 is also provided, which serves to prevent the spindle from buckling in the upper position. Furthermore, an upper stop 46 for the spindle nut 16 is shown in FIG. 5. 6 shows the variant 5a in the left figure representation, the variant 5b in the right representation. Here in particular is the fixed spindle nut 16a and the spindle mother with gimbals shown in comparison.

Landscapes

  • Machine Tool Units (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Friction Gearing (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Claims (6)

1. Dispositif pour le réglage continu en hauteur de tables, sièges ou analogues, comportant un montant tubulaire externe et un montant tubulaire interne, qui sont axialement déplaçables l'un par rapport à l'autre au moyen d'un guidage à rouleaux et d'une commande d'arbre, caractérisé en ce que la commande d'arbre (15) disposée de façon centrale présente, dans sa région inférieure, un engrenage à friction planétaire (17), lequel peut être entraîné au moyen d'un disque volant (18) agissant de l'extérieur sur les roues planétaires (24).
2. Dispositif selon la revendication 1,
caractérisé en ce que l'engrenage à friction planétaire (17) est constitué de trois roues à friction (24) angulairement espacées à 120° autour de la commande d'arbre (15), qui sont en engagement avec une paire de disques (29) de la commande d'arbre (15), et en ce que le disque volant (18) entoure de façon concentrique les roues à friction (24) qui le guident et dans lequel elles sont logées.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la commande d'arbre (15) est reliée au montant tubulaire interne (12) par l'intermédiaire d'un écrou (16, 34) suspendu à la Cardan.
4. Dispositif selon la revendication 1,
caractérisé en ce que le guidage à rouleaux (14) entre le montant tubulaire externe (13) et le montant tubulaire interne (12) est constitué d'à chaque fois trois rouleaux (37), de matière synthétique, de préférence du polyamide, angulairement espacés de 120°, qui sont disposés dans une cage à rouleaux (40, 42) dans un plan supérieur (38) et un plan inférieur (39).
5. Dispositif selon la revendication 4,
caractérisé en ce que des tubes d'acier de précision non usinés sont utilisés comme montant tubulaire externe (13) et montant tubuiaire interne (12), le diamètre des rouleaux (37) du guidage à rouleaux (14) entre les tubes (12, 13) étant tel que les tubes (12, 13) sont maintenus en tenant compte de leur marge de tolérance.
6. Dispositif selon une ou plusieurs des revendications précédentes,
caractérisé en ce que le poids du dessus de table (11) ou analogue et du montant tubulaire interne (12) peut être compensé au moyen d'un ressort à pression de gaz (20) ou d'un ressort à boudin (21) entre la zone inférieure du dispositif de réglage en hauteur et le dessus de table, le ressort à boudin (21) étant guidé par un tube de guidage interne (23) et un tube de guidage externe (22).
EP86105571A 1985-04-30 1986-04-22 Table réglable en hauteur ou similaire Expired EP0203362B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105571T ATE44442T1 (de) 1985-04-30 1986-04-22 Hoehenverstellbarer tisch o. dgl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3515491 1985-04-30
DE19853515491 DE3515491A1 (de) 1985-04-30 1985-04-30 Hoehenverstellbarer tisch o. dgl.

Publications (2)

Publication Number Publication Date
EP0203362A1 EP0203362A1 (fr) 1986-12-03
EP0203362B1 true EP0203362B1 (fr) 1989-07-12

Family

ID=6269439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105571A Expired EP0203362B1 (fr) 1985-04-30 1986-04-22 Table réglable en hauteur ou similaire

Country Status (3)

Country Link
EP (1) EP0203362B1 (fr)
AT (1) ATE44442T1 (fr)
DE (2) DE3515491A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036036A1 (de) 2010-08-31 2012-03-01 Stabilus Gmbh Verstellantrieb

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2101577C (fr) * 1992-07-31 2005-06-07 Dale L. Taipale Scene modulaire portable
DE29919214U1 (de) * 1999-11-03 2000-01-05 Dewert Antriebs Systemtech Elektromotorischer Möbelantrieb
US9188278B1 (en) * 2014-05-16 2015-11-17 Chin-Chu Li Lifting support structure
DE102014117071B4 (de) * 2014-11-21 2019-10-31 Logicdata Electronic & Software Entwicklungs Gmbh Möbelsystem mit Linearaktuator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521341A (en) * 1968-06-17 1970-07-21 Reinhard Hornlein Kg Method of assembling and forming an extensible column
US3707930A (en) * 1971-07-26 1973-01-02 American Hospital Supply Corp Power operated pedestal table and safety clutch therefor
CH563748A5 (fr) * 1973-10-18 1975-07-15 Zollinger Hansrudolf
FR2504789A1 (fr) * 1981-05-04 1982-11-05 Sautereau Jacques Allongement de la course d'une table a dessiner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036036A1 (de) 2010-08-31 2012-03-01 Stabilus Gmbh Verstellantrieb
DE102010036036B4 (de) * 2010-08-31 2015-09-10 Stabilus Gmbh Verstellantrieb

Also Published As

Publication number Publication date
DE3515491A1 (de) 1986-10-30
EP0203362A1 (fr) 1986-12-03
ATE44442T1 (de) 1989-07-15
DE3664250D1 (en) 1989-08-17

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