Lifting column preferably for height-adjustable tables

Patent metadata

Field	Value
Publication number	US-9247806-B2
Application number	US-201113811822-A
Country	US
Kind code	B2
Filing date	Jul 29, 2011
Priority date	Jul 29, 2010
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

Lifting column, preferably for height adjustable tables, said lifting column comprising at least two relative to each other telescopically arranged members ( 2 a, 2 b, 2 c ). At least one slider ( 11 ) is arranged between the two members ( 2 a, 2 b, 2 c ), said slider being secured to one of the members ( 2 b ). The problem is play between the members ( 2 a, 2 b, 2 c ), resulting in an unstable lifting column. For solution of this problem the member ( 2 b ) to which the slider ( 11 ) is secured, is furnished with a resilient section ( 17 ) outlined by a groove ( 16, 18 ) against which at least a part of the slider ( 11 ) rests. The resilient section ( 17 ) can push the slider ( 11 ) into firm engagement against the two members ( 2 b, 2 c ), at which a stable lifting column which is free from play is achieved.

First claim

The invention claimed is:

1. A lifting column comprising:
at least two members arranged telescopically relative to each other, and
at least one slider located between two successive members, said slider being secured to one of the two members, said one member including a wall with a groove therein that outlines a resilient section thereof against which at least a part of the slider rests.

2. The lifting column according to claim 1 , wherein the members consist of tube profiles.

3. The lifting column according to claim 2 , wherein at least at one end of said one member there are resilient sections equipped with sliders on at least two opposing sides of said one member.

4. The lifting column according to claim 2 , wherein the tube profiles have a circular cross section.

5. The lifting column according to claim 4 , wherein at least at one end of said one member there are four resilient sections equipped with sliders having a mutual distance of 90°.

6. The lifting column according to claim 1 , wherein the groove includes two groove lengths running in a longitudinal direction of the member and located at a mutual distance.

7. The lifting column according to claim 6 , wherein the groove lengths in the longitudinal direction of the member at one end are connected to a transverse groove length, such that the resilient section appears as a tongue.

8. The lifting column according to claim 7 , wherein the resilient section is located at, but at a distance from, an end of said one member such that said one member from the resilient section to the adjacent end of said one member remains unbroken.

9. The lifting column according to claim 7 , wherein a distance which the resilient section is located from the end of said one member is shorter than an axial extent of the resilient section.

10. The lifting column according to claim 6 , including two successive resilient sections located as a pair in the axial direction of said one member at at least one end of said one member.

11. The lifting column according to claim 10 , wherein the two resilient sections are arranged mirror-inverted relative to each other.

12. The lifting column according to claim 10 , wherein there are only resilient sections at the end of said one member, which during the telescopic movement constantly is in contact with the other member.

13. The lifting column according to claim 1 , wherein at least one slider as a brick-shaped element is designed as an elongated sliding device.

14. The lifting column according to claim 13 , wherein the area of the sliding device outside the sliders is thinner than the sliders.

15. The lifting column according to claim 13 , wherein the sliders at one free end are furnished with a stepping down at the rear side facing the member, such that it is thinner than the remaining slider engaging the resilient section and that the end further is beveled with a slanting surface.

16. The lifting column according to claim 15 , wherein the rear side of the sliding device includes at least one cam extending into a recess in said one member intended for that purpose for securing the sliding device to said one member.

17. The lifting column according to claim 13 , wherein a longitudinal rib for securing against rotation is designed on a front side of the sliding device, said rib being intended for protruding into a longitudinal groove on the inner side of a surrounding member in order to prevent said one member equipped with the sliding device and a surrounding member from rotating relative to each other.

18. The lifting column according to claim 13 , wherein the sliding device has an elongated section connecting a brick-shaped slider at each end of the sliding device and that the elongated section is thinner than the sliders.

19. A table comprising a lifting column which comprises:
at least two members ranged telescopically relative to each other, and
at least one slider located between two successive members, said slider being secured to one of the two members, said one member including a wall with a groove therein that outlines resilient section thereof against which at least a part of the slider rests.

Assignees

• Lorenzen Kurt
• Riis Martin
• Linak As

Inventors

• Lorenzen Kurt
• Riis Martin

Classifications

• A47B9/20 Primary

  Telescopic guides · CPC title