WO1997047217A1 - Systeme de guidage telescopique - Google Patents

Systeme de guidage telescopique Download PDF

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Publication number
WO1997047217A1
WO1997047217A1 PCT/EP1997/003083 EP9703083W WO9747217A1 WO 1997047217 A1 WO1997047217 A1 WO 1997047217A1 EP 9703083 W EP9703083 W EP 9703083W WO 9747217 A1 WO9747217 A1 WO 9747217A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner tube
balls
outer tube
tube
telescopic guide
Prior art date
Application number
PCT/EP1997/003083
Other languages
German (de)
English (en)
Inventor
Karl Heinz Strauss
Original Assignee
Herbert Grüttner GmbH & 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 Herbert Grüttner GmbH & Co. KG filed Critical Herbert Grüttner GmbH & Co. KG
Publication of WO1997047217A1 publication Critical patent/WO1997047217A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • 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
    • A47B9/20—Telescopic guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28—Undercarriages for supports with one single telescoping pillar
    • 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
    • A47B2220/00—General furniture construction, e.g. fittings
    • A47B2220/0022—Slides
    • A47B2220/0025—Slides having telescoping guides with friction reducing pieces, e.g. balls between inner and outer profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/025—Locking means for translational movement
    • F16M2200/027—Locking means for translational movement by friction

Definitions

  • the invention relates to a telescopic guide according to the preamble of claim 1, which is used for example for height-adjustable tables.
  • a conventional telescopic guide of this type which is manufactured and sold by the applicant, has an outer tube made of metal with a rectangular cross-section, in which an inner tube made of metal is guided by means of running balls and also has a rectangular cross-section.
  • the balls are held in a ball cage in such a way that they form four rows of balls in the four inner corners of the outer tube.
  • the longitudinal edges of the inner tube are drawn inwards so that they form guide grooves for the running balls. In this way, a torsion-proof guidance of the inner tube in the outer tube is achieved.
  • the running balls are each supported with two points of their surface on the outer tube and with another two points in the guide groove formed by the inner tube and are dimensioned such that the inner tube is guided in the outer tube with virtually no play.
  • FR 1 278 851 discloses telescopic guides with an outer tube which is square in cross section and a round inner tube.
  • the running balls are guided here without a ball cage in only two diagonally opposite inner corners of the outer tube, so that dimensional tolerances can be compensated for by the square outer tube being elastically deformed into a slightly diamond-shaped cross section.
  • This principle can also be reversed by using a rigid outer tube and an elastically deformable inner tube. Grooves are incorporated in the round tube, which the Giving guidance balls. However, the guidance stability that can be achieved in this way is not sufficient for many practical applications. The manufacturing outlay is also still relatively high since the grooves have to be machined into the round tube.
  • the object of the invention is to provide a telescopic guide of the type mentioned at the outset, which can be produced inexpensively and yet permits stable, low-play and twist-free guidance of the inner tube in the outer tube.
  • the inner tube has a convexly rounded cross section in the peripheral regions at which the running balls roll.
  • the running balls are dimensioned such that they plastically deform the surface of the inner tube when they run in, thereby creating flat guide grooves in the inner tube.
  • the inner tube can have a very simple profile shape and, for example in the case of a square or round outer tube, can simply be formed by a round tube, a considerable reduction in the production costs is achieved.
  • inexpensive welded and non-tightened pipes can be used for the inner pipe and the outer pipe, for example pipes according to DIN 2395 for the outer pipe and according to DIN 2394 for the inner pipe. This results in a further considerable cost saving.
  • the larger dimensional tolerances compared to the prior art are compensated for when the telescopic guide is run in, in that the running balls plastically deform the surface of the inner tube and thereby create guide grooves themselves. These guide grooves also ensure that the inner tube is secured against twisting, which is completely sufficient for most practical applications, for example for a height-adjustable table supported on two telescopic columns.
  • the inner tube is supported at least three points on its circumference by the balls guided in a ball cage and / or the inner corners of the outer tube, a high degree of guidance stability is achieved, so that the Telescopic guide can absorb high lateral forces in every direction.
  • the at least three-point support of the inner tube, in combination with the convex shape of the inner tube, also makes a significant contribution to ensuring that the pressure exerted on the inner tube by the running balls as the telescopic guide does not give in to the wall of the inner tube and thus to one Changing the overall cross-sectional shape leads only to the formation of shallow grooves in the surface of the inner tube. Another important fact that enables this deformation behavior is that the running balls are supported on the inner tube at a single point, so that the deformation forces are concentrated on one point.
  • the outer tube preferably has a polygonal inner cross section. Since the running balls are then supported at two points in the inner corners of the outer tube, reliable guiding of the running balls is ensured as soon as they run in, so that exactly straight guide grooves are impressed into the surface of the inner tube. If the inner tube is a run-off tube, all that needs to be done during running-in is to avoid that a torque acts on the inner tube during the axial movement.
  • Another advantage is that due to the single-point support of the running balls on the inner tube and the two-point support on the outer pipe, the effective rolling radius with which the running balls roll on the outer pipe is smaller than the rolling radius of the balls on the inner pipe.
  • the running balls cover a smaller distance relative to the outer tube than relative to the inner tube.
  • FIG. 1 shows a first embodiment of a telescopic guide according to the invention
  • FIG. 2 is an enlarged partial view of the embodiment according to FIG. 1;
  • FIG. 3 shows a second embodiment of the telescopic guide
  • Fig. 4 shows a third embodiment of the telescopic guide.
  • FIG. 1 shows a cross section of a telescopic guide 10 which is formed by a steel outer tube 12 with a square cross section, a round inner tube 14 made of steel arranged centrally in the outer tube and four rows of running balls 16 arranged between the outer tube and the inner tube , of which only the top ball of a row can be seen.
  • the running balls are held by a ball cage 18.
  • the running balls 16, which are arranged in the inner corners of the outer tube 12, are each supported at two points on an inner surface 20 of the outer tube 12 and at one point on an outer surface 22 of the inner tube 14.
  • the guide grooves 24 By forming the guide grooves 24, dimensional tolerances of the running balls and the inner tube can be compensated for. On the other hand, the inner tube is secured against twisting.
  • FIG. 3 shows a second embodiment of the telescopic guide 10, which is a rectangular outer tube compared to the embodiment according to FIG. 1 12 and has an oval inner tube 14.
  • four rows of running balls 16 are also used, which are arranged in the inner corners of the outer tube and are each supported at two points, while the inner tube is supported at one point for each running ball.
  • the telescopic guide in turn has a high level of guidance stability. Because of the cross-sectional shape, the inner tube 14 is already guided in a rotationally secure manner inside the outer tube 12 when it runs in.
  • Fig. 4 shows a third embodiment of the telescopic guide 10, in which the outer tube 12 is designed as an equilateral triangle. A round tube is again used as the inner tube 14. In comparison to the two embodiments according to FIGS. 1 and 3, however, only three running balls 16 are necessary in order to achieve high guidance stability.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

L'invention concerne un système de guidage télescopique (10) comprenant un tube extérieur (12) polygonal métallique et une cage à billes (18) renfermant au moins trois rangées de billes (16) qui roulent dans trois coins différents du tube extérieur (12). Un tube intérieur (14) métallique est guidé au moyen des billes (16) dans le tube extérieur (12). Le tube intérieur (14) présente, dans les zones périphériques où roulent les billes (16), une section transversale arrondie convexe et les billes (16) sont dimensionnées de sorte qu'elles provoquent une déformation plastique de la surface du tube intérieur (14) lorsqu'elles s'enfoncent, créant ainsi des rainures de guidage (24) dans le tube intérieur (14).
PCT/EP1997/003083 1996-06-12 1997-06-12 Systeme de guidage telescopique WO1997047217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19623437.9 1996-06-12
DE19623437A DE19623437C2 (de) 1996-06-12 1996-06-12 Teleskopführung

Publications (1)

Publication Number Publication Date
WO1997047217A1 true WO1997047217A1 (fr) 1997-12-18

Family

ID=7796742

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003083 WO1997047217A1 (fr) 1996-06-12 1997-06-12 Systeme de guidage telescopique

Country Status (2)

Country Link
DE (1) DE19623437C2 (fr)
WO (1) WO1997047217A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001052700A1 (fr) * 2000-01-18 2001-07-26 Lindual Ab Dispositif pour un tube telescopique
US9247806B2 (en) 2010-07-29 2016-02-02 Linak A/S Lifting column preferably for height-adjustable tables
US9591920B2 (en) 2004-12-17 2017-03-14 Steelcase Inc. Load compensator for height adjustable table
TWI625473B (zh) * 2017-07-21 2018-06-01 海麥斯科技有限公司 伸縮桿組件結構

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1009958C2 (nl) * 1998-08-27 2000-02-29 Regout Nv Thomas Werkwijze voor de vervaardiging van een geleider, geleider en meubel voorzien van tenminste een geleider.
DE10014630B4 (de) * 2000-03-24 2017-12-14 Franz Haimer Maschinenbau Kg Mehrkoordinaten-Tastmessgerät
DE10053988A1 (de) * 2000-10-31 2002-05-08 Ina Schaeffler Kg Lageranordnung für eine Welle
DE10054236A1 (de) * 2000-11-02 2002-07-25 Okin Ges Fuer Antriebstechnik Teleskoparm
EP1270972B1 (fr) * 2001-06-21 2004-08-25 Steelcase Sa Système de guidage télescopique d'un tube interne dans une enveloppe tubulaire externe
DE102013219296B4 (de) * 2013-09-25 2015-08-13 Aktiebolaget Skf Teleskopführung und Verfahren zu deren Montage
DE102021214325B4 (de) 2021-12-14 2023-06-29 Kesseböhmer Holding Kg Teleskopsäule für einen höhenverstellbaren Tisch und höhenverstellbarer Tisch mit einer solchen Teleskopsäule

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE643495A (fr) * 1963-02-07 1964-05-29
DE1429615A1 (de) * 1963-05-17 1969-01-16 Karl Goller Kg Maschf Ausziehbares Moebelbein

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1400318B2 (de) * 1960-01-08 1970-03-26 Maschinenfabrik Karl Goller KG, 8000 München Längs fuhrungseinheit
DE1904159U (de) * 1964-09-09 1964-11-12 Otto Kessler K G Tischfabrik U Fuehrung fuer hoehenverstellbare saeulentische.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE643495A (fr) * 1963-02-07 1964-05-29
DE1429615A1 (de) * 1963-05-17 1969-01-16 Karl Goller Kg Maschf Ausziehbares Moebelbein

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001052700A1 (fr) * 2000-01-18 2001-07-26 Lindual Ab Dispositif pour un tube telescopique
US9591920B2 (en) 2004-12-17 2017-03-14 Steelcase Inc. Load compensator for height adjustable table
US9826825B1 (en) 2004-12-17 2017-11-28 Steelcase Inc. Load compensator for height adjustable table
US9913532B1 (en) 2004-12-17 2018-03-13 Steelcase Inc. Load compensator for height adjustable table
US10051955B1 (en) 2004-12-17 2018-08-21 Steelcase Inc. Load compensator for height adjustable table
US10420417B1 (en) 2004-12-17 2019-09-24 Steelcase Inc. Load compensator for height adjustable table
US9247806B2 (en) 2010-07-29 2016-02-02 Linak A/S Lifting column preferably for height-adjustable tables
TWI625473B (zh) * 2017-07-21 2018-06-01 海麥斯科技有限公司 伸縮桿組件結構

Also Published As

Publication number Publication date
DE19623437A1 (de) 1998-01-02
DE19623437C2 (de) 1998-07-02

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