Retraction device and method for opening and closing a movable furniture part

1. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) is a gear with a transmission ratio which can be varied via the movement of the opening driver ( 23 ).

2. The retraction device according to claim 1 , A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein with a constant movement of the opening driver ( 23 ) in the opening direction, the movement of the driver ( 11 ) from the retraction position to the parked position becomes slower.

3. The retraction device according to claim 2 , wherein with constant movement of the opening driver ( 23 ) in the opening direction, the movement of the driver ( 11 ) from the retracted position to the parked position is slowed down by at least 50% due to a changing transmission ratio.

4. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the second guide path ( 21 ) has a linear section and an angled section and, when the opening driver ( 23 ) is arranged on the angled section, the opening activator ( 26 ) is decoupled from the opening driver ( 23 ) and the driver ( 11 ) is arranged in the parked position.

5. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) comprises at least one cable pull ( 33 , 34 ) which is configured to be wound up along a rotatable disc ( 32 ), wherein a winding edge for the cable pull ( 33 , 34 ) is formed on the disc ( 32 ), said winding edge having a radius which varies relative to an axis of rotation of the disc.

6. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) comprises at least one rack which runs along at least one non-circular gear, and wherein the at least one non-circular gear has teeth that are arranged along a curve which extends at a non-constant distance from an axis of rotation of the non-circular bear.

7. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein during a closing movement of the movable furniture part ( 3 ), the activator ( 25 ) moves the driver ( 11 ) out of the parked position and the driver ( 11 ) moves the activator ( 25 ) into the retracted position by a force of the energy storage device.

8. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the activator ( 25 ) in the retraction position is freely movable in the opening direction relative to the driver ( 11 ).

9. A pull-out guide ( 4 ) having at least two rails ( 5 , 6 , 7 ) movable relative to one another and with a retraction device for a movable furniture part, the retraction device comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein during a closing movement of the movable furniture part ( 3 ), the activator ( 25 ) moves the driver ( 11 ) out of the parked position and the driver ( 11 ) moves the activator ( 25 ) into the retracted position by a force of the energy storage device.

10. The pull-out guide according to claim 9 , wherein the two guide paths ( 10 , 21 ) are arranged in a stationary manner and the opening activator ( 26 ) and the activator ( 25 ) are fixed to the movable rail ( 5 , 6 , 7 ) of the pull-out guide ( 4 ) or to the movable furniture part ( 3 ).

11. A method for opening and closing a movable furniture part ( 3 ) and for clamping a retraction device, comprising the following steps:

moving the movable furniture part ( 3 ) from a closed position in an opening direction, wherein an opening driver ( 23 ) moves a driver ( 11 ) in the opening direction via a transmission gear ( 30 ), the driver ( 11 ) being pretensioned in a closing direction by an energy storage device, wherein the opening driver ( 23 ) is moved faster than the driver ( 11 );

parking the driver ( 11 ) and the opening driver ( 23 ) in a parked position and decoupling the movable furniture part ( 3 ) from the retraction device, and moving the movable furniture part ( 3 ) in the closing direction, wherein an activator ( 25 ) is coupled to the driver ( 11 ), which via the energy storage device moves the movable furniture part ( 3 ) and the opening activator ( 26 ) in the closing direction, wherein when the opening driver ( 26 ) is moved at constant speed from the retracted position to the parked position, the speed of the driver ( 11 ) is reduced.