WO2000071001A1 - Adjustable leg device - Google Patents
Adjustable leg device Download PDFInfo
- Publication number
- WO2000071001A1 WO2000071001A1 PCT/SE2000/001005 SE0001005W WO0071001A1 WO 2000071001 A1 WO2000071001 A1 WO 2000071001A1 SE 0001005 W SE0001005 W SE 0001005W WO 0071001 A1 WO0071001 A1 WO 0071001A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holder
- supporting element
- supporting
- leg device
- elements
- Prior art date
Links
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
- A47B9/20—Telescopic guides
-
- 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
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/005—Leg adjustment
- A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
- A47B2200/0059—Leg adjustment with a motor, e.g. an electric motor in telescoping table legs
Definitions
- the present invention relates to a lengthwise adjustable leg device to be used especially in connection with vertically adjustable tables.
- Such a leg device may comprise a holder which is adapted to be fixed to the underside of a table-top; first, second and third elongate supporting elements which are directed away from the holder and cooperate by threading engagement, one of the first and third supporting elements being mounted turnably but axially immovably in the holder, the second supporting element being arranged between the first and third supporting elements; and means for turning the supporting element mounted in the holder.
- Vertically adjustable tables are used, for instance, as computer table, drawing table and treatment table in physiotherapy. This adjustability in the vertical direction is achieved by means of adjustable legs, which can be controlled in pairs or fully synchronously with the aid of one or more drive means, such as an electric motor and selectively activatable connections with each of the legs .
- drive means such as an electric motor and selectively activatable connections with each of the legs .
- Prior art leg devices are of the telescopic type with two or three screw elements, three screw elements being required to provide a sufficiently great setting range.
- Such a known leg device is disclosed in
- FR 2 747 280 discloses a leg device of the type stated by way of introduction, in which besides the first supporting element has an external thread and a widened portion at an end located m the second supporting element, the second supporting element is a tube with an external thread, with an internal threaded portion at an end enclosing the first supporting element, threadingly engaged with the external thread of the first supporting element, and with a widened portion at an end located in the third supporting element, the third supporting element consists of a tubular element with an internal threaded portion at an end enclosing the second supporting element, threadingly engaged with the external thread of the second supporting element, means for turning the supporting element mounted in the holder; and three telescopingly displaceable tubular elements, m which the three supporting elements are arranged.
- this leg device Admit - tedly, this leg device is relatively simple in terms of function but complicated in terms of manufacture and does not satisfy requirements as to the greatest possible ratio of maximum length to minimum length of the leg device. Therefore the object of the present invention is to provide a lengthwise adjustable leg device of the type stated by way of introduction, which in terms of manufacture is a simple construction and thus economically advantageous and which besides has the greatest possible ratio of maximum length to minimum length.
- a lengthwise adjustable leg device is thus characterised in that the external thread of the second supporting element extends over essentially the entire internal threaded portion of the same supporting element. As a result, the entire length of the second supporting element is fully enclosed in the third supporting element, which gives the smallest possible minimum length of the leg device and, thus, the greatest possible ratio of maximum length to minimum lengtn.
- the internal threaded portion of the second and third supporting elements suitably consists of a nut which is non-turnably fixed relative to the respective supporting elements and which can advantageously be made of plastic, e.g. polyamide .
- the other of the first and third supporting elements is in one embodiment arranged non-turnably relative to the holder. This can be achieved by the telescopmgly displaceable tubular elements being non-turnable relative to each other as well as relative to the holder and the other of the first and third supporting elements.
- the other of the first and third supporting elements can be arranged non-turnably relative to the corresponding one of the telescopmgly displaceable elements.
- the first supporting element is advantageously arranged closest to the holder.
- the means for turning the supporting element located closest to the holder may comprise a bevel gear, such as a worm wheel coupling.
- the three telescopmgly displaceable tubular elements can have gradually increasing diameters seen from the holder.
- Fig. 1 is a side view, partly m cross-section, of an embodiment of a lengthwise adjustable leg device according to the invention, in a retracted state.
- Fig. 2 is a side view, partly m cross-section, of the lengthwise adjustable leg device m Fig. 1, an extended state.
- the leg device shown m the drawings comprises a holder 1, which is fixed to the underside of a table-top 2.
- three elongate supporting elements 3, 4 and 5 are arranged under the holder 1 and are extended vertically downwards or away from the holder.
- the supporting elements 3, 4 and 5 each comprise a tube 6, 7 and 8, respectively.
- the tube 6 is at its upper end mounted turn- ably, but axially immovably in the holder 1, and more specifically connected to the output shaft of a bevel gear 9, such as a worm gear, whose input shaft is connected directly or, by the intermediary of a connection shared by a plurality of leg devices, to an electric motor 10 or another driving device.
- a bevel gear 9 such as a worm gear
- the electric motor 10 and the bevel gear 9 suitably consist of a conventionally assembled unit.
- the tube 6 has an external thread along essentially its entire length and a widened portion in the form of a collar 11 at its lower end, i.e. the end facing away from the holder 1.
- the tube 7 has a larger diameter than the tube 6 and, at its upper end, i.e. at its end closest to the holder 1, a nut 12, which is fixed inside the tube end and has an internal thread for engaging the external thread of the tube 6.
- the tube 7 has an external thread along essentially its entire length and a widened portion in the form of a collar 13 at its lower end, i.e. the end facing away from the holder 1.
- the tube 8 has in turn a larger diameter than the tube 7 and has at its upper end, i.e. at its end closest to the holder 1, a nut 14 which is fixed inside the tube end and has an internal thread for engaging the external thread of the tube 7.
- the nut 14 can advantageously be made of plastic, e.g. polyamide .
- the tube 8 has no external thread and no widened portion at its lower end, where it is instead non-turnably fixed at the lower end of one of three telescopmgly displaceable tubes 15, 16 and 17, which enclose the tubes 6, 7 and 8.
- the three tubes 15, 16 and 17 can be non-turnable relative to each other, e.g.
- the axial control means may consist of at least two slide strips which are received m opposite axial grooves m the tubes 15 and 16 and, respectively, 16 and 17.
- the axial control means may consist of at least two slide strips which are received m opposite axial grooves m the tubes 15 and 16 and, respectively, 16 and 17.
- the property of being non-turnable can also be achieved with a non-circular profile of the tubes 15, 16 and 17.
- the tube 8 is non- turnable relative to the holder 1 owing to the described connection between the tubes 15, 16 and 17 as well as between the tubes 8 and 15 and between the tube 17 and the holder 1.
- the tubes 15, 16 and 17 need not be non-turnable relative to each other.
- only the tubes 15 and 8 can be non-turnable relative to each other since the friction between the base and the lower end of these tubes is m most cases sufficient to hold the tube 8 immovable when turning at least one of the tubes 6 and 7.
- this tube 7 having the external thread along essentially its entire length, this tube and, thus, the second supporting element 4 can be completely enclosed the tube 8 and the third supporting element 5, respectively.
Landscapes
- Legs For Furniture In General (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00935781A EP1194057A1 (en) | 1999-05-20 | 2000-05-19 | Adjustable leg device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9901830-1 | 1999-05-20 | ||
SE9901830A SE9901830L (en) | 1999-05-20 | 1999-05-20 | Length adjustable leg device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000071001A1 true WO2000071001A1 (en) | 2000-11-30 |
Family
ID=20415667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2000/001005 WO2000071001A1 (en) | 1999-05-20 | 2000-05-19 | Adjustable leg device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1194057A1 (en) |
SE (1) | SE9901830L (en) |
WO (1) | WO2000071001A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002062176A1 (en) * | 2001-02-08 | 2002-08-15 | Linak A/S | A lifting column, in particular for height-adjustable tables |
DE10112940A1 (en) * | 2001-03-17 | 2002-10-02 | Fleischer Bueromoebelwerk Gmbh | Table for a computer monitor or a CAD workstation, the height of which can be rapidly adjusted to a chosen working height that is suitable for use by either a standing or sitting person |
EP1510157A1 (en) * | 2003-09-01 | 2005-03-02 | Goppion S.r.l. | Display showcase with improved opening device |
EP2342992A1 (en) | 2009-11-24 | 2011-07-13 | KIH-utveckling AB | Linear actuator for height adjustable columns |
WO2013159775A1 (en) * | 2012-04-23 | 2013-10-31 | Linak A/S | Lifting column |
KR101674473B1 (en) * | 2016-03-09 | 2016-11-23 | 주식회사 하이파오피스 | Apparatus for adjusting height of desk |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2000081A1 (en) * | 1970-01-02 | 1971-07-15 | Ulrich Dudda | Double or multi-telescopic table frame with extremely high adjustability |
SE468875B (en) * | 1991-12-27 | 1993-04-05 | Funco Inredningar Ab | Telescopic pillar, such as a table leg |
US5282593A (en) * | 1992-06-05 | 1994-02-01 | Tri W-G, Inc. | Adjustable leg |
FR2747280A1 (en) * | 1996-04-10 | 1997-10-17 | B I 2 S | Chassis with variable height for medical furniture |
DK89097A (en) * | 1997-07-24 | 1999-01-25 | Munch Fals Jakob | Telescopic furniture legs |
-
1999
- 1999-05-20 SE SE9901830A patent/SE9901830L/en not_active Application Discontinuation
-
2000
- 2000-05-19 WO PCT/SE2000/001005 patent/WO2000071001A1/en not_active Application Discontinuation
- 2000-05-19 EP EP00935781A patent/EP1194057A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2000081A1 (en) * | 1970-01-02 | 1971-07-15 | Ulrich Dudda | Double or multi-telescopic table frame with extremely high adjustability |
SE468875B (en) * | 1991-12-27 | 1993-04-05 | Funco Inredningar Ab | Telescopic pillar, such as a table leg |
US5282593A (en) * | 1992-06-05 | 1994-02-01 | Tri W-G, Inc. | Adjustable leg |
FR2747280A1 (en) * | 1996-04-10 | 1997-10-17 | B I 2 S | Chassis with variable height for medical furniture |
DK89097A (en) * | 1997-07-24 | 1999-01-25 | Munch Fals Jakob | Telescopic furniture legs |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002062176A1 (en) * | 2001-02-08 | 2002-08-15 | Linak A/S | A lifting column, in particular for height-adjustable tables |
DE10112940A1 (en) * | 2001-03-17 | 2002-10-02 | Fleischer Bueromoebelwerk Gmbh | Table for a computer monitor or a CAD workstation, the height of which can be rapidly adjusted to a chosen working height that is suitable for use by either a standing or sitting person |
EP1510157A1 (en) * | 2003-09-01 | 2005-03-02 | Goppion S.r.l. | Display showcase with improved opening device |
EP2342992A1 (en) | 2009-11-24 | 2011-07-13 | KIH-utveckling AB | Linear actuator for height adjustable columns |
US8967006B2 (en) | 2009-11-24 | 2015-03-03 | Kih-Utveckling Ab | Linear actuator for height adjustable columns |
WO2013159775A1 (en) * | 2012-04-23 | 2013-10-31 | Linak A/S | Lifting column |
US9480333B2 (en) | 2012-04-23 | 2016-11-01 | Linak A/S | Lifting column |
KR101674473B1 (en) * | 2016-03-09 | 2016-11-23 | 주식회사 하이파오피스 | Apparatus for adjusting height of desk |
Also Published As
Publication number | Publication date |
---|---|
EP1194057A1 (en) | 2002-04-10 |
SE9901830D0 (en) | 1999-05-20 |
SE9901830L (en) | 2000-11-21 |
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