Drive devices with synchronization device for a movable furniture part

Patent metadata

Field	Value
Publication number	US-10405653-B2
Application number	US-201715723625-A
Country	US
Kind code	B2
Filing date	Oct 3, 2017
Priority date	Apr 14, 2015
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

An arrangement includes a first drive device for moving a movable furniture part, a second drive device for moving the same movable furniture part, and a synchronization device for synchronizing the two drive devices. The two drive devices can assume different positions during the movement of the movable furniture part. The arrangement also includes a correction device, by which both drive devices can be brought into the same position.

First claim

The invention claimed is:

1. An arrangement comprising:
a first drive device configured to move a moveable furniture part, the moveable furniture part not forming part of the arrangement,
a second drive device configured to move the moveable furniture part, the two drive devices being configured to assume different positions during movement of the moveable furniture part,
a synchronizing device for synchronizing the two drive devices, and
a correction device for bringing the two drive devices into a same position,
wherein the synchronizing device comprises a synchronizing rod with a first rod member and a second rod member rotatable relative to the first rod member, wherein the first and second rod members also form parts of the correction device, and
wherein the first rod member is insertable into the second rod member, and a holding torque between the first and second rod members remains substantially constant independent of an insertion depth of the first rod member in the second rod member.

2. The arrangement according to claim 1 , wherein the different positions of the first and second drive devices comprise a position in a tensioning section, a position in a locking section, a position in an over-pressing section, and a position in an ejecting section.

3. The arrangement according to claim 1 , wherein the first and second drive devices can be brought into the same position by the correction device during the movement of the moveable furniture part.

4. The arrangement according to claim 1 , wherein the correction device is part of the synchronizing device.

5. The arrangement according to claim 1 , wherein the first and second rod members have a first operating position relative to each other, in which a predetermined holding torque is generated between the first and second rod members.

6. The arrangement according to claim 5 , wherein the first and second rod members have a second operating position relative to each other, which second operating position is rotated in comparison to the first operating position, wherein in the second operating position the holding torque between the first and second rod members is substantially as large as the holding torque in the first operating position.

7. The arrangement according to claim 1 , wherein the synchronizing device further comprises a first coupling element for connecting the synchronizing device with the first drive device, and a second coupling element for connecting the synchronizing device with the second drive device, wherein the first and second coupling elements are motion-transmitting connected by the synchronizing rod.

8. The arrangement according to claim 7 , wherein the first and second coupling elements are moveable to a limited extent by a limit-stop.

9. The arrangement according to claim 8 , wherein the limit-stop is formed yieldingly, wherein a rotary movement between the first rod member and the second rod member is carried out when the force between the first and second rod members is smaller than the force which the limit-stop opposes to a movement of one of the coupling elements, the force being a holding torque.

10. The arrangement according to claim 8 , wherein the limit-stop is formed yieldingly on an elastic arm.

11. The arrangement according to claim 1 , wherein the first and second drive devices each comprise a lockable ejection device for ejecting the moveable furniture part from a closed position into an open position and a locking device for locking the ejection device in a locking position, wherein the ejection device is unlockable from the locking position by an over-pressing movement of the moveable furniture part into an over-pressing position situated behind the closed position.

12. The arrangement according to claim 1 , wherein the drive devices are substantially mirror-symmetrical to each other.

13. An item of furniture comprising:
a furniture carcass,
a moveable furniture part being moveable on the furniture carcass, and
the arrangement according to claim 1 .

14. The item of furniture according to claim 13 , wherein the first and second drive devices of the arrangement are arranged on opposite sides of the moveable furniture part.

15. The item of furniture according to claim 13 , wherein the first and second drive devices are mounted to the moveable furniture part or to a drawer rail.

16. An arrangement comprising:
a first drive device configured to move a moveable furniture part, the moveable furniture part not forming part of the arrangement,
a second drive device configured to move the moveable furniture part, the two drive devices being configured to assume different positions during movement of the moveable furniture part,
a synchronizing device for synchronizing the two drive devices, and
a correction device for bringing the two drive devices into a same position,
wherein the synchronizing device comprises a synchronizing rod with a first rod member and a second rod member rotatable relative to the first rod member, and the synchronizing device further comprises a first coupling element for connecting the synchronizing device with the first drive device, and a second coupling element for connecting the synchronizing device with the second drive device, wherein the first and second coupling elements are motion-transmitting connected by the synchronizing rod,
wherein the first and second coupling elements and the synchronizing rod each are motion-transmitting interconnected by a gear rack formed on each of the first and second coupling elements and by a gear wheel being part of the synchronizing rod.

17. An arrangement comprising:
a first drive device configured to move a moveable furniture part, the moveable furniture part not forming part of the arrangement,
a second drive device configured to move the moveable furniture part, the two drive devices being configured to assume different positions during movement of the moveable furniture part,
a synchronizing device for synchronizing the two drive devices, and
a correction device for bringing the two drive devices into a same position,
wherein the synchronizing device comprises a synchronizing rod with a first rod member and a second rod member rotatable relative to the first rod member, and the synchronizing device further comprises a first coupling element for connecting the synchronizing device with the first drive device, and a second coupling element for connecting the synchronizing device with the second drive device, wherein the first and second coupling elements are motion-transmitting connected by the synchronizing rod,
wherein the first and second coupling elements are moveable to a limited extent by a limit-stop, and
wherein, in the case of the first coupling element abutting the limit-stop and simultaneous movement of the second coupling element, the rod members of the synchronizing device prevent a movement transmission from the second coupling element to the first coupling element by rotation of the first and second rod members to each other.

18. An arrangement comprising:
a first drive device configured to move a moveable furniture part, the moveable furniture part not forming part of the arrangement,
a second drive device configured to move the moveable furniture part, the two drive devices being configured to assume different positions during movement of the moveable furniture part,
a synchronizing device for synchronizing the two drive devices, and
a correction device for bringing the two drive devices into a same position,
wherein the synchronizing device comprises a syn

Assignees

• Blum Gmbh Julius

Inventors

• Goetz Christof
• Koenig Bernd

Classifications

• E05F7/00

  Accessories for wings not provided for in other groups of this subclass (specially adapted for furniture A47B95/00; door-lifters B66F, E04F21/00; knobs or handles E05B) · CPC title

• A47B88/463 Primary

  self-opening · CPC title

• E05F1/00

  Closers or openers for wings, not otherwise provided for in this subclass · CPC title

• A47B88/447 Primary

  Simultaneous movement of rails within drawer slides, i.e. with a coordination of movement with all rail elements moving at the same time · CPC title