Drive device for a movable furniture part

Patent metadata

Field	Value
Publication number	US-9622578-B2
Application number	US-201514844460-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Apr 12, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A drive device for a movable furniture part includes an ejection device which can be locked in a locked position, the ejection device being used to move the movable furniture part from a closed position into an open position. The ejection device can be unlocked by pushing the movable furniture part so that the movable furniture part moves into a pushed-in position which is beyond the closed position in a closing direction, this enables the ejection device to move the movable furniture part in an opening direction; and the movable furniture part can also be moved from the closed position into the open position by pulling the movable furniture part, the ejection device remaining in the locked position when opened by pulling. The drive device also includes a coupling device for coupling the drive device to the movable furniture part or to a furniture body.

First claim

The invention claimed is:

1. A drive device for a movable furniture part movable in a furniture carcass, comprising:
an ejection device lockable in a locked position for moving the movable furniture part from a closed position into an open position, wherein the ejection device is unlockable by over-pressing the movable furniture part into an over-pressing position which is behind the closed position in a closing direction, whereby the movable furniture part is movable by the ejection device in an opening direction, wherein the movable furniture part is also movable from the closed position into the open position by pulling on the movable furniture part, wherein the ejection device remains in the locked position upon opening by pulling,
a base plate, and
a coupling device for coupling the drive device to the movable furniture part or to the furniture carcass,
wherein the coupling device is in a coupling position upon ejection of the movable furniture part by the ejection device, wherein the coupling device is movable loosely with respect to the ejection device upon opening by pulling, and
wherein the ejection device has a guide path in the base plate, an ejection slider which is movable along the base plate, a locking lever coupled pivotably to the ejection slider, a locking pin mounted to the locking lever and displaceable in the guide path and an ejection force storage member fixed to the base plate and to the ejection slider.

2. The drive device as set forth in claim 1 , further comprising a retraction device for retraction of the movable furniture part from the open position into the closed position.

3. The drive device as set forth in claim 2 , wherein the retraction device can be brought into engagement by way of a retraction catch element with a retraction entrainment portion which is configured to be separate from a coupling entrainment portion.

4. The drive device as set forth in claim 3 ,
wherein the retraction device can be at least portion-wise coupled to the coupling device by way of the retraction catch element and can be stressed upon opening by pulling a retraction force storage member of the retraction device along first opening travel portion.

5. The drive device as set forth in claim 4 , wherein the retraction force storage member is a tension spring.

6. The drive device as set forth in claim 1 , wherein, upon opening by pulling, the coupling device remains in the coupling position in a first opening travel portion which is in front of the closed position in the opening direction.

7. The drive device as set forth in claim 6 , wherein the first opening travel portion is between 6 mm and 100 mm in length.

8. The drive device as set forth in claim 7 , wherein the first opening travel portion is between 20 mm and 70 mm in length.

9. The drive device as set forth in claim 1 , wherein the coupling device has a coupling slider displaceable at least portion-wise linearly in the base plate and a catch element mounted moveably on the coupling slider, for engagement with a coupling entrainment portion configured to be arranged on the furniture carcass or on the movable furniture part.

10. The drive device as set forth in claim 9 , wherein a transmission abutment of the coupling device is provided on the coupling slider.

11. The drive device as set forth in claim 9 , wherein the coupling slider and the catch element are displaceable along a portion-wise linear guide path in the base plate, having an angled end portion.

12. The drive device as set forth in claim 9 , wherein the catch element is mounted pivotably on the coupling slider.

13. The drive device as set forth in claim wherein the coupling device has a transmission abutment, by way of which the coupling device bears against a triggering abutment of the ejection device in the closed position and in an over-pressing region between the closed position and the over-pressing position.

14. The drive device as set forth in claim 13 , wherein the triggering abutment of the ejection device is provided on the locking lever.

15. An article of furniture having a furniture carcass, a furniture part movable relative to the furniture carcass and a drive device as set forth in claim 1 for the movable furniture part.

16. The article of furniture as set forth in claim 15 , wherein the drive device is arranged on the movable furniture part, wherein the coupling device has a coupling entrainment portion which is associated with the furniture carcass and which can be brought into engagement with a catch element.

17. The drive device as set forth in claim 1 , wherein the ejection slider is movable linearly along the base plate.

18. The drive device as set forth in claim 1 , wherein the ejection force storage member is a tension spring.

19. A drive device for a movable furniture part movable in a furniture carcass, comprising:
an ejection device lockable in a locked position for moving the movable furniture part from a closed position into an open position, wherein the ejection device is unlockable by over-pressing the movable furniture part into an over-pressing position which is behind the closed position in a closing direction, whereby the movable furniture part is movable by the ejection device in an opening direction, wherein the movable furniture part is also movable from the closed position into the open position by pulling on the movable furniture part, wherein the ejection device remains in the locked position upon opening by pulling,
a base plate, and
a coupling device for coupling the drive device to the movable furniture part or to the furniture carcass,
wherein the coupling device is in a coupling position upon ejection of the movable furniture part by the ejection device, wherein the coupling device is movable loosely with respect to the ejection device upon opening by pulling,
wherein the ejection device has a cardioid-shaped guide path in the base plate, an ejection slider which is movable along the base plate, a locking lever coupled pivotably to the ejection slider, and a locking pin mounted to the locking lever and displaceable in the cardioid-shaped guide path, and
wherein the ejection slider can be locked by the locking pin in the cardioid-shaped guide path with a latching region.

20. The drive device as set forth in claim 19 , wherein the ejection device has an ejection force storage member fixed to the base plate and the ejection slider.

Assignees

• Blum Gmbh Julius

Inventors

• Goetz Christof
• Gasser Ingo
• Haemmerle Hermann

Classifications

• A47B88/47 Primary

  having both self-opening and self-closing mechanisms which interact with each other · CPC title

• A47B88/467

  self-closing · CPC title

• E05B65/462

  for two or more drawers · CPC title

• A47B88/0477 Primary

  Human Necessities · mapped topic

• A47B88/047

  Human Necessities · mapped topic