Electromotive furniture drive

Patent metadata

Field	Value
Publication number	US-9872566-B2
Application number	US-201615208218-A
Country	US
Kind code	B2
Filing date	Jul 12, 2016
Priority date	Jun 28, 2012
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

An electromotive furniture drive includes a drive unit and a power take-off unit which can be moved relative to the drive unit. At least one connecting element is arranged on each of the drive unit and the power take-off unit to respectively connect the drive unit and the power take-off unit to a furniture fitting. Each of the connecting elements provides at least two force application points in spaced apart relation for the connection to the furniture fitting in a direction transverse to the relative movement between the drive unit and the power take-off unit. The force application points are spaced apart from one another at least by a distance which is greater than approximately 50% of a displacement movement of the furniture drive.

First claim

What is claimed is:

1. An electromotive furniture drive, comprising:
a drive unit;
a power take-off unit movable in relation to the drive unit; and
connection elements respectively arranged on the drive unit and on the power take-off unit for connecting the drive unit and the power take-off unit to a furniture fitting, wherein the connection elements are configured for providing at least two spaced-apart force application points for connection with the furniture fitting in a direction transversely to a relative movement between the drive unit and the power take-off unit, said force application points being spaced apart from one another,
wherein the electromotive furniture drive is operably connected to the furniture fitting for moving a furniture part, said electromotive furniture drive being configured, so that a force for a movement of the furniture fitting is not applied centrally to components of the furniture fitting, but it is distributed broadly over the furniture fitting and as a result the furniture fitting does not need to be modified for use with the furniture drive and a reinforcement of the components of the furniture drive fitting on which the furniture drive acts is not needed, and
wherein the connection elements are configured for a releasable connection.

2. The electromotive furniture drive of claim 1 , wherein each of the connection elements is configured for providing at least two spaced-apart force application points for connection with the furniture fitting in a direction transversely to a relative movement between the drive unit and the power take-off unit, said force application points being spaced apart from one another at least by a distance which is greater than approximately 50% of a travel of the furniture drive.

3. The electromotive furniture drive of claim 1 , constructed for attachment to the furniture fitting of a seating furniture.

4. The electromotive furniture drive of claim 1 , wherein the distance of the force application points is greater than 25% of a width of the furniture fitting.

5. The electromotive furniture drive of claim 1 , wherein the distance of the force application points is greater than 10 cm.

6. The electromotive furniture drive of claim 1 , wherein the connection elements connect the drive unit and the power take-off unit to the furniture fitting in a frictionally engaged or interlocking manner.

7. The electromotive furniture drive of claim 1 , wherein the connection elements are configured for connection with a cross member and/or rotating cross member extending transversely in the furniture fitting between lateral lever mechanisms.

8. The electromotive furniture drive of claim 7 , wherein the power take-off unit has a cross-strut to form the connection element on the power take-off unit, said cross-strut being provided with spaced-apart half-shell-shaped clamps or clips and/or cable ties for connection with the cross member of the furniture fitting.

9. The electromotive furniture drive of claim 7 , wherein the connection elements are configured as two spaced-apart swivel levers for connection with the cross member of the furniture fitting.

10. The electromotive furniture drive of claim 9 , wherein the swivel levers are connectable in a torsion-proof manner to the rotating cross member of the furniture fitting.

11. The electromotive furniture drive of claim 9 , wherein the swivel levers are arranged via swivel joints on extension arms of the drive unit.

12. The electromotive furniture drive of claim 9 , wherein the swivel levers are arranged via swivel joints on a cross-strut of the power take-off unit.

13. The electromotive furniture drive of claim 1 , wherein the drive unit comprises a motor which acts via a worm on a rotatably mounted spindle nut.

14. The electromotive furniture drive of claim 13 , wherein the power take-off unit has a housing and at least one bearing for rotatably mounting the spindle nut in the housing of the power take-off unit.

15. The electromotive furniture drive of claim 14 , wherein the power take-off unit comprises a torsion-proof spindle extending through the housing and operatively connected to the spindle nut.

16. The electromotive furniture drive of claim 15 , further comprising a cover configured to cover the spindle on at least two sides.

17. The electromotive furniture drive of claim 16 , wherein the cover surrounds the spindle at least on three sides in a U-shaped manner and is formed in one piece with integrated film hinges.

18. An electromotive furniture drive, comprising:
a drive unit;
a power take-off unit movable in relation to the drive unit; and
connection elements respectively arranged on the drive unit and on the power take-off unit for connecting the drive unit and the power take-off unit to a furniture fitting,
wherein each of the connection elements is configured for providing at least two spaced-apart force application points for connection with the furniture fitting in a direction transversely to a relative movement between the drive unit and the power take-off, said force application points being spaced from one another,
wherein the connection elements are configured for connection with a cross member and a rotating cross member extending transversely in the furniture fitting between lateral lever mechanisms, and
wherein the furniture drive acts on the cross member on one hand and on the rotating cross member on the other hand without being fixed in a stationary manner with one of its components to or on a base frame of the furniture fitting.

19. The electromotive furniture drive of claim 18 , wherein the force application points are spaced apart from one another at least by a distance which is greater than approximately 50% of a travel of the furniture drive.

20. The electromotive furniture drive of claim 18 , constructed for attachment to the furniture fitting of a seating furniture.

21. The electromotive furniture drive of claim 18 , wherein the distance of the force application points is greater than 25% of a width of the furniture fitting.

22. The electromotive furniture drive of claim 18 , wherein the distance of the force application points is greater than 10 cm.

23. The electromotive furniture drive of claim 18 , wherein the connection elements connect the drive unit and the power take-off unit to the furniture fitting in a frictionally engaged or interlocking manner.

24. The electromotive furniture drive of claim 18 , wherein the connection elements are configured for a releasable screwless connection.

25. The electromotive furniture drive of claim 18 , wherein the connection elements are configured for connection with a cross member and/or rotating cross member extending transversely in the furniture fitting between lateral lever mechanisms.

26. The electromotive furniture drive of claim 25 , wherein the power take-off unit has a cross-strut to form the connection element on the power take-off unit, said cross-strut being provided with spaced-apart half-shell-shaped clamps or clips and/or cable ties for connection with the cross member of the furniture fitting.

27. The electromotive furniture drive of claim 25 , wherein the connection elements are configured as two spaced-apart swivel levers for connection with the cross member of the furniture fitting.

28. The electromotive furniture drive of claim 27 , wherein the swivel levers are connect

Assignees

• Dewertokin Gmbh

Inventors

• Flamme Klaus-Peter

Classifications

• Y10T74/20

  Control lever and linkage systems · CPC title

• A47C1/0246

  by means of screw-and-nut mechanism · CPC title

• A47C1/034

  the parts including a leg-rest or foot-rest (A47C1/037 takes precedence) · CPC title

• A47C7/56

  Parts or details of tipping-up chairs, e.g. of theatre chairs · CPC title

• A47C7/506

  of adjustable type · CPC title