Drive device for a movable furniture part

Patent metadata

Field	Value
Publication number	US-9655447-B2
Application number	US-201514847577-A
Country	US
Kind code	B2
Filing date	Sep 8, 2015
Priority date	Apr 12, 2013
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A drive device for a movable furniture part has a lockable ejection device for ejecting the movable furniture part from a closed position into an open position. The ejection device can be unlocked by pressing the movable furniture part into an over-pressed position situated behind the closed position in the closing direction. A blocking element is provided which has a blocking position in which the blocking element prevents the unlocking of the ejection device upon reaching the pressed-over position, and which has a release position in which the ejection device can be unlocked upon reaching the pressed-over position.

First claim

The invention claimed is:

1. A drive device for a moveable furniture part, said drive device comprising:
a lockable ejection device for ejecting the moveable furniture part from a closed position into an open position, said ejection device configured to be unlocked by over-pressing the moveable furniture part into an over-pressed position beyond the closed position in a closing direction;
a blocking element configured to be moveable between (i) a blocking position in which said blocking element prevents unlocking of said ejection device when the moveable furniture part is in the over-pressed position, and (ii) a release position in which said ejection device is unlockable when the moveable furniture part is in the over-pressed position; and
a resetting device for moving said blocking element from the blocking position into the release position, said resetting device being configured to effect a resetting movement of said blocking element in a time-delayed relationship such that the resetting movement of said blocking element begins at the latest when the moveable furniture part reaches the closed position.

2. The drive device as set forth in claim 1 , wherein said blocking element is configured to be moved into the blocking position before the moveable furniture part is in the closed position.

3. The drive device as set forth in claim 2 , wherein said resetting device is configured such that the moveable furniture part is in the closed position when said resetting device returns said blocking element to the release position.

4. The drive device as set forth in claim 1 , wherein the resetting movement is between 0.2 second and 4 seconds.

5. The drive device as set forth in claim 4 , wherein the resetting movement is between 0.3 second and 1 second.

6. The drive device as set forth in claim 1 , wherein said ejection device includes a force-actuated ejection lever and an ejection force storage member for actuating said ejection lever, said drive device further comprising:
a locking base plate; and
a locking element moveable along said locking base plate, said ejection lever bearing against said locking element in the closed position;
wherein said ejection lever and said locking element are configured such that, in the closed position, said locking element in a locking position blocks a path of movement of said ejection lever into an ejection area, and, in the over-pressed position, said locking element in a release position allows said ejection lever to move along the path of movement of said ejection lever into the ejection area.

7. The drive device as set forth in claim 6 , wherein said blocking element is mounted rotatably on said locking element.

8. The drive device as set forth in claim 6 , wherein said blocking element is moveable into the blocking position in a closing movement by said ejection lever.

9. The drive device as set forth in claim 6 , wherein said blocking element is configured to prevent movement of said locking element into the release position while said blocking element is in the blocking position.

10. The drive device as set forth in claim 6 , wherein said blocking element is mounted so as to have limited movement within a guide path in said blocking base plate.

11. The drive device as set forth in claim 10 , wherein said blocking element is wedged in the blocking position in the guide path.

12. The drive device as set forth in claim 1 , further comprising a retraction device for retracting the moveable furniture part.

13. The drive device as set forth in claim 12 , wherein said retraction device is formed of an ejection lever of said ejection device.

14. The drive device as set forth in claim 13 , further comprising a control path configured such that said ejection lever of said ejection device bears against an ejection portion of said control path upon ejection of the moveable furniture part, such that said ejection lever bears against a stressing portion of said control path upon stressing of an ejection force storage member of said ejection device, and such that said ejection lever bears against a retraction portion of said control path upon retraction of the moveable furniture part into the closed position while said ejection levers functions as said retraction device.

15. An article of furniture having said drive device as set forth in claim 1 .

16. A method of opening and closing a moveable furniture part using the drive device as set forth in claim 1 , said method comprising:
ejecting the moveable furniture part from the closed position into the open position by the lockable ejection device, the ejection device being unlocked by over-pressing the moveable furniture part into the over-pressed position beyond the closed position in the closing direction;
moving the blocking element of the drive device upon closing of the moveable furniture part into the blocking position in which unlocking of the ejection device is prevented upon reaching the over-pressed position; and
moving the blocking element from the blocking position into the release position in which unlocking of the ejection device occurs upon reaching the over-pressed position.

17. The method as set forth in claim 16 , wherein said moving of the blocking element from the blocking position into the release position is effected while the moveable furniture part is in the closed position in a time-delayed relationship by the resetting device, the time delay being between 0.2 and 4 seconds.

18. A drive device for a moveable furniture part, said drive device comprising:
a lockable ejection device for ejecting the moveable furniture part from a closed position into an open position, said ejection device configured to be unlocked by over-pressing the moveable furniture part into an over-pressed position behind the closed position relative to a closing direction, said ejection device including a force-actuated ejection lever and an ejection force storage member for actuating said ejection lever;
a blocking element configured to be moveable between (i) a blocking position in which said blocking element prevents unlocking of said ejection device when the over-pressed position is reached, and (ii) a release position in which said ejection device unlockable when the over-pressed position is reached;
a locking base plate; and
a locking element moveable along said locking base plate, said ejection lever bearing against said locking element in the closed position;
wherein said ejection lever of said ejection device and said locking element are configured such that, in the closed position, said locking element in a locking position blocks a path of movement of said ejection lever into an ejection area, and, in the over-pressed position, said locking element in a release position allows said ejection lever to move along the path of movement of said ejection lever into the ejection area; and
wherein said blocking element is mounted rotatably on said locking element.

19. The drive device as set forth in claim 18 , wherein said blocking element is moveable into the blocking position in a closing movement by said ejection lever.

20. The drive device as set forth in claim 18 , wherein said blocking element is configured to prevent movement of said locking element into the release position while said blocking element is in the blocking position.

21. The drive device as set forth in claim 18 , wherein said blocking element is mounted so as to have limited movement within a guide path in said blocking base plate.

Assignees

• Blum Gmbh Julius

Inventors

• Brunnmayr Harald
• Blum Michael

Classifications

• A47B88/931

  Rails or rods mounted above the drawer walls, e.g. for stabilisation of the drawer or for suspension of the content · CPC title

• A47B88/47 Primary

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

• A47B88/463

  self-opening · CPC title

• A47B88/40

  Sliding drawers; Slides or guides therefor · CPC title

• A47B88/46

  operated by mechanically-stored energy, e.g. by springs · CPC title