Drive mechanism for a movable furniture part

Patent metadata

Field	Value
Publication number	US-2017095084-A1
Application number	US-201615380368-A
Country	US
Kind code	A1
Filing date	Dec 15, 2016
Priority date	Jun 16, 2014
Publication date	Apr 6, 2017
Grant date	—

Abstract

Drive mechanism for a movable furniture part, in particular a drawer, having a first and a second lockable pushing-out mechanism and a synchronizing mechanism for synchronizing the two pushing-out mechanisms, wherein the synchronizing mechanism has a synchronizing rod and a first and a second synchronizing element, which can be connected to the synchronizing rod, and wherein relative movement takes place between the synchronizing elements and the pushing-out mechanisms during synchronizing operation, wherein, in an active synchronizing mode, during synchronizing operation, movement is transmitted from the first pushing-out mechanism, via the first synchronizing element, the synchronizing rod and the second synchronizing element, to the second pushing-out mechanism and, in an inactive synchronizing mode, the synchronizing rod is removed and the synchronizing elements each remain in contact with one of the pushing-out mechanisms.

First claim

1 . A drive device for a movable furniture part, in particular a drawer, comprising a first and a second lockable ejection device and a synchronizing device for synchronizing the two ejection devices, wherein the synchronizing device comprises a synchronizing rod and a first and second synchronizing element, which can be connected to the synchronizing rod, and wherein a relative movement takes place between the synchronizing elements and the ejection devices during the synchronizing operation, wherein
in an active synchronizing mode during the synchronizing operation a movement transmission takes place from the first ejection device via the first synchronizing element, the synchronizing rod and the second synchronizing element to the second ejection device and in an inactive synchronizing mode the synchronizing rod is removed and the synchronizing elements each remain in contact with one of the ejection devices.

2 . The drive device according to claim 1 , wherein the ejection devices each comprise a housing and a transmission element supported movably, preferably rotatably, on the housing, wherein the synchronizing elements each are movably coupled with one of the transmission elements.

3 . The drive device according to claim 2 , wherein each synchronizing element comprises a gear wheel and each transmission element comprises a section in the shape of a gear rack, wherein the gear wheels each mesh with one of the sections in the shape of a gear rack.

4 . The drive device according to claim 2 , wherein each ejection device comprises a force-actuated ejection element for ejecting the movable furniture part from a closed position into an open position and a locking device for locking the ejection element in a locking position, wherein the locking device can be unlocked by over-pressing the movable furniture part into an over-pressing position lying behind the closing position.

5 . The drive device according to claim 4 , wherein the locking device comprises a locking peg and a, preferably heart curve-shaped, sliding guide track formed in the housing.

6 . The drive device according to claim 5 , wherein each transmission element forms a part of each sliding guide track, preferably a latch recess of the heart curve-shaped sliding guide track.

7 . The drive device according to claim 1 , wherein each synchronizing element is supported—preferably in a rotating configuration and preferably axially fixed—on the housing of the ejection device via a bearing element.

8 . The drive device according to claim 1 , wherein the synchronizing rod comprises on both end section a non-circular cross section and each synchronizing element comprises a receiving area which at least section-wise matches with the outer contour of the end sections of the synchronizing rod.

9 . The drive device according to claim 8 , wherein the synchronizing rod comprises a rod-shaped base part—preferably formed as a hollow profile with the same inner diameter along the entire length—and two plug in parts being mountable to the ends of the base part and forming the end sections.

10 . The drive device according to claim 1 , wherein the synchronizing rod is formed unchangeable in length.

11 . The drive device according to claim 1 , wherein only a part section of the movements of the ejection devices can be synchronized by the synchronizing device—preferably only the first section of an opening movement of the movable furniture part which section directly follows to the over-pressing position.

12 . An item of furniture comprising a furniture carcass, a furniture part movably supported on the furniture carcass, preferably via an extension guide, and a drive device according to claim 1 .

Assignees

• Blum Gmbh Julius

Inventors

• Koenig Bernd
• Meusburger Marc

Classifications

• A47B2210/0078

  Drawers with parallel guidance or synchronization by pinion-shaft linkages · CPC title

• A47B88/483

  with single extensible guides or parts · CPC title

• A47B88/467

  self-closing · CPC title

• A47B88/463 Primary

  self-opening · CPC title

• A47B88/45

  Synchronisation of cooperating drawer slides, i.e. with a coordination of the rail movement of different drawer slides · CPC title