IP Library Granted Patent US 9,408,466
Granted Patent B2
US 9,408,466 · App. 14/411,456 · Granted Aug 9, 2016

Electromotive furniture drive

Inventor: Klaus-Peter Flamme (Utting, DE)
Assignee: DEWERTOKIN GMBH
A47C1/0242A47C1/034A47C1/03211A47C7/506Y10T74/20
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Quick Facts
Patent No.
US 9,408,466
App. No.
14/411,456
Granted
Aug 9, 2016
Kind
B2
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.

Claims (40)

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, each of the connection elements 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, which corresponds to a length of a maximum displacement of the furniture drive.

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

3. 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.

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

5. 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.

6. The electromotive furniture drive of claim 1 , wherein the connection elements are configured for a releasable connection.

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. A piece of furniture, comprising:

a furniture fitting;

a furniture part fixed to the furniture fitting; and

an electromotive furniture drive operably connected to the furniture fitting for moving the furniture part, said electromotive furniture drive including 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 the furniture fitting, each of the connection elements 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, which corresponds to a length of a maximum displacement of the furniture drive.

19. The piece of furniture of claim 18 , constructed in the form of a seating furniture or a relaxation chair.

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

21. The piece of furniture of claim 18 , wherein the distance of the force application points is greater than 10 cm.

22. The piece of furniture 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.

23. The piece of furniture of claim 18 , wherein the connection elements are configured for a releasable connection.

24. The piece of furniture 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.

25. The piece of furniture of claim 24 , 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.

26. The piece of furniture of claim 24 , wherein the connection elements are configured as two spaced-apart swivel levers for connection with the cross member of the furniture fitting.

27. The piece of furniture of claim 26 , wherein the swivel levers are connectable in a torsion-proof manner to the rotating cross member of the furniture fitting.

28. The piece of furniture of claim 26 , wherein the swivel levers are arranged via swivel joints on extension arms of the drive unit.

29. The piece of furniture of claim 26 , wherein the swivel levers are arranged via swivel joints on a cross-strut of the power take-off unit.

30. The piece of furniture of claim 18 , wherein the drive unit comprises a motor which acts via a worm on a rotatably mounted spindle nut.

31. The piece of furniture of claim 30 , 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.

32. The piece of furniture of claim 31 , wherein the power take-off unit comprises a torsion-proof spindle extending through the housing and operatively connected to the spindle nut.

33. The piece of furniture of claim 32 , wherein the electromotive furniture drive includes a cover configured to cover the spindle on at least two sides.

34. The piece of furniture of claim 33 , 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.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 25, 2021
From: DEWERTOKIN GMBH
To: DEWERTOKIN TECHNOLOGY GROUP CO., LTD
Reel/Frame 057311/0625 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 26, 2014
From: FLAMME, KLAUS-PETER
To: DEWERTOKIN GMBH
Reel/Frame 034587/0264 →
Priority Claims (1)
DE 10 2012 105 717 · Jun 28, 2012 · national
Continuity (1)
Related Publication 20150320215A1 · Nov 12, 2015