Actuating drive for furniture flaps

Patent metadata

Field	Value
Publication number	US-9719283-B2
Application number	US-201615218183-A
Country	US
Kind code	B2
Filing date	Jul 25, 2016
Priority date	Mar 13, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

An actuating drive for moving a flap of an item of furniture, including: an actuating arm pivotally mounted about a pivoting axis for moving the flap, a spring device for applying a force onto the actuating arm, a transmission mechanism for transmitting a force of the spring device onto the actuating arm in a closing direction and for transmitting a force of the spring device onto the actuating arm, and an adjusting device for adjusting a position of an actuating portion of the actuating drive in or along a guide. The actuating drive includes a coupling device coupling the spring device, the pivoting axis of the actuating arm, and the actuating portion to one another. By adjusting the actuating portion in or along the guide, the position of the dead-center of the actuating arm and the force of the spring device acting towards the opening direction can be variably adjusted.

First claim

The invention claimed is:

1. An actuating drive for moving a flap of an item of furniture, the actuating drive comprising:
an actuating portion;
at least one actuating arm pivotally mounted about a pivoting axis for moving the flap;
a spring device for applying a force onto the actuating arm;
a transmission mechanism for transmitting a force of the spring device onto the actuating arm in a closing direction and, after exceeding a dead-center position, for transmitting a force of the spring device onto the actuating arm in an opening direction;
an adjusting device for adjusting a position of the actuating portion of the actuating drive in or along a guide;
wherein the actuating drive includes a coupling device which couples the spring device, the pivoting axis of the actuating arm, and the actuating portion to one another;
wherein the actuating portion, the actuating arm, and the spring device are configured such that, by adjusting the actuating portion in or along the guide, a position of the dead-center of the actuating arm and a force of the spring device acting towards the opening direction onto the actuating arm can be variably adjusted so that, upon an increase of the force acting towards the opening direction, a pivoting angle of the actuating arm, at which the position of the dead center lies, can be reduced;
wherein the coupling device includes at least one lever pivotally mounted about a hinge axis, the guide being arranged or formed on the lever.

2. The actuating drive according to claim 1 , wherein the adjusting device is configured to variably adjust the position of the dead-center of the actuating arm, starting from the fully closed position of the actuating arm, between 10° and 30°.

3. The actuating drive according to claim 2 , wherein the adjusting device is configured to variably adjust the position of the dead-center of the actuating arm, starting from the fully closed position of the actuating arm, between 15° and 25°.

4. The actuating drive according to claim 1 , wherein the spring device is configured to engage the actuating portion via at least one pushing lever, and the pivoting axis of the actuating arm is coupled to the actuating portion via at least one adjusting lever, wherein by adjusting the actuating portion in or along the guide, the position of the pushing lever as well as the position of the adjusting lever relative to the lever can be variably adjusted.

5. The actuating drive according to claim 1 , wherein the adjusting device is configured to adjust the position of the actuating portion in or along the guide in a direction towards and away from the hinge axis of the lever, wherein the relative distance between the actuating portion and the hinge axis of the lever can be reduced and enlarged along a notional connecting line between the actuating portion and the hinge axis of the lever.

6. The actuating drive according to claim 5 , wherein the adjusting device is configured to adjust the position of the actuating portion in or along the guide in a direction transverse to the notional connecting line.

7. The actuating drive according to claim 1 , wherein the spring device includes at least one coil spring.

8. The actuating drive according to claim 1 , wherein the spring device includes at least one pressure spring.

9. An arrangement comprising:
a flap of an item of furniture; and
the actuating drive according to claim 1 , wherein the actuating drive is configured to move the flap between a vertical closed position and an open position which is arranged above a furniture carcass.

10. An actuating drive for moving a flap of an item of furniture, the actuating drive comprising:
an actuating portion;
at least one actuating arm pivotally mounted about a pivoting axis for moving the flap;
a spring device for applying a force onto the actuating arm;
a transmission mechanism for transmitting a force of the spring device onto the actuating arm in a closing direction and, after exceeding a dead-center position, for transmitting a force of the spring device onto the actuating arm in an opening direction;
an adjusting device for adjusting a position of the actuating portion of the actuating drive in or along a guide;
wherein the actuating drive includes a coupling device which couples the spring device, the pivoting axis of the actuating arm, and the actuating portion to one another;
wherein the actuating portion, the actuating arm, and the spring device are configured such that, by adjusting the actuating portion in or along the guide, a position of the dead-center of the actuating arm and a force of the spring device acting towards the opening direction onto the actuating arm can be variably adjusted so that, upon an increase of the force acting towards the opening direction, a pivoting angle of the actuating arm, at which the position of the dead center lies, can be reduced;
wherein the transmission mechanism includes a two-armed deflection lever with two lever ends, the deflection lever being pivotally mounted about a pivoting axis, wherein a first lever end interacts with the spring device and a second lever end interacts with the actuating portion; and
wherein the spring device is connected to the first lever end of the deflection lever via a joint, and the joint being non-adjustably arranged relative to the pivoting axis of the deflection lever.

11. An actuating drive for moving a flap of an item of furniture, the actuating drive comprising:
an actuating portion;
at least one actuating arm pivotally mounted about a pivoting axis for moving the flap;
a spring device for applying a force onto the actuating arm;
a transmission mechanism for transmitting a force of the spring device onto the actuating arm in a closing direction and, after exceeding a dead-center position, for transmitting a force of the spring device onto the actuating arm in an opening direction;
an adjusting device for adjusting a position of the actuating portion of the actuating drive in or along a guide;
wherein the actuating drive includes a coupling device which couples the spring device, the pivoting axis of the actuating arm, and the actuating portion to one another;
wherein the actuating portion, the actuating arm, and the spring device are configured such that, by adjusting the actuating portion in or along the guide, a position of the dead-center of the actuating arm and a force of the spring device acting towards the opening direction onto the actuating arm can be variably adjusted so that, upon an increase of the force acting towards the opening direction, a pivoting angle of the actuating arm, at which the position of the dead center lies, can be reduced;
wherein the transmission mechanism includes an actuating portion movement-coupled to the actuating arm, a control curve, and a pressure portion acted upon by the spring device, the pressure portion being configured to, upon a movement of the actuating arm, be displaced along the control curve, wherein by adjusting the actuating portion in or along the guide, the position of the pressure portion can be variably adjusted.

12. The actuating drive according to claim 11 , wherein the pressure portion is formed as a rotatably mounted pressure roller.

13. The actuating drive according to claim 12 , wherein the actuating portion forms the pivoting axis of the pressure roller.

14. An actuating drive for moving a flap of an item of furniture, the actuating drive comprising:
an actuating portion;
at least one actuating arm pivotally mounted about a pivoting axis for moving the flap;
a spring device for applying a force onto the actuating arm;
a transmission mecha

Assignees

• Blum Gmbh Julius

Inventors

• Holzapfel Andreas

Classifications

• E05Y2201/618

  Transmission ratio variation · CPC title

• E05F1/1261

  for counterbalancing · CPC title

• E05F1/1253 Primary

  with a compression spring · CPC title

• E05F1/1058 Primary

  for counterbalancing · CPC title

• E05Y2900/20

  for furniture, e.g. cabinets · CPC title