Retracting device for furniture parts

1. A retraction device for retracting a movable furniture part into a closed end position relative to a furniture carcass, said retraction device comprising:

an entrainment member releasably coupled to the movable furniture part, the entrainment member being supported displaceably over at least a region of a linear displacement path;

a spring device for applying a force to the entrainment member, the spring device configured to be tensioned by a spring holder separate from the entrainment member;

a coupling device for motionally coupling a movement between the entrainment member and the spring holder, the coupling device being configured to cause an end of the spring device on the spring holder to move slower relative to the entrainment member along a control curve as the entrainment member is being pulled out in an opening direction,

wherein the coupling device includes a two-armed lever having two lever ends, the two-armed lever being pivotally mounted about a pivoting axis on the spring holder, a first lever end of the two-armed lever being motionally coupled via a pivotable transmission lever to the entrainment member, and a second lever end of the two-armed lever including a guide element which, upon movement of the entrainment member, is displaceably guided over at least a region of the control curve.

2. The retraction device according to claim 1 , wherein the first lever end and the second lever end of the two-armed lever have different lengths.

3. The retraction device according to claim 2 , wherein the guide element is arranged on a longer one of the first lever end and the second lever end of the two-armed lever.

4. The retraction device according to claim 1 , wherein the transmission lever has a first end pivotably connected to the entrainment member and a second end pivotably connected to the two-armed lever.

5. The retraction device according to claim 4 , wherein the transmission lever is curved-shaped.

6. The retraction device according to claim 5 , wherein the curved-shaped transmission lever embraces the two-armed lever in a pulled-in position of the entrainment member.

7. The retraction device according to claim 1 , wherein the control curve is formed separately from the linear displacement path of the entrainment member.

8. The retraction device according to claim 1 , wherein the control curve includes a curved section on an end region which corresponds to a last tensioning path of the spring device.

9. The retraction device according to claim 8 , wherein a length of the curved section of the control curve is at least a third of an overall length of the control curve.

10. The retraction device according to claim 1 , wherein the retraction device has a housing on which at least one of the linear displacement path and the control curve is arranged or formed.

11. The retraction device according to claim 1 , wherein the entrainment member is movably mounted along the linear displacement path between a self-locking ready position, in which the spring device is in a tensioned condition, and an end position, in which the spring device is at least partly in a relaxed condition.

12. A drawer pull-out guide comprising a retraction device according to claim 1 .

13. The drawer pull-out guide according to claim 12 , wherein the drawer pull-out guide further comprises a carcass rail to be fixed to a furniture carcass and an extension rail displacably mounted relative to the carcass rail, wherein the extension rail can be pulled by the retraction device into the fully closed end position at the end of a closing movement.

14. An arrangement comprising a drawer and a retraction device according to claim 1 .