Actuating drive for a movable furniture part

1. An actuating drive comprising:

an actuating arm for moving a movable furniture part, said actuating arm having a mounting portion;

a locking device for locking a movement of said actuating arm, said locking device being configured to allow a movement of said actuating arm only after the movable furniture part has been mounted to said actuating arm, and said locking device being configured such that unlocking of said locking device is automatically effected by mounting of the movable furniture part to said actuating arm;

a fitment body to be fixed to the movable furniture part; and

a fixing device for releasably connecting said mounting portion of said actuating arm to said fitment body;

wherein said locking device includes:

a movably-mounted control portion;

a locking portion for blocking a pivotal movement of said actuating arm; and

a transmission mechanism for transmitting movement of said control portion to said locking portion so as to block and unblock the pivotal movement of said actuating arm;

wherein said control portion of said locking device and said fitment body are configured such that, upon mounting of said mounting portion to said fitment body, said control portion is acted upon by said fitment body.

2. The actuating drive according to claim 1 , wherein said transmission mechanism is configured to convert a pivotal movement of said control portion into a linear movement of said locking portion.

3. The actuating drive according to claim 1 , wherein said transmission mechanism includes at least two hingedly interconnected levers.

4. The actuating drive according to claim 1 , wherein said locking device further includes a spring configured to urge said locking portion in a blocking direction.

5. The actuating drive according to claim 1 , wherein said actuating arm has a recess into which said locking engages to block the pivotal movement of said actuating arm.

6. The actuating drive according to claim 1 , wherein said fixing device is configured to releasably connect said mounting portion of said actuating arm to said fitment body without a tool.

7. An actuating drive comprising:

a fitment body to be fixed to a movable furniture part;

an actuating arm for moving the movable furniture part, said actuating arm having a mounting portion releasably connected to said fitment body; and

a locking device for locking said actuating arm so as to prevent a movement of said actuating arm, and for unlocking said actuating arm so as to allow a movement of said actuating arm, said locking device being configured to automatically lock said actuating arm when said fitment body is disconnected from said mounting portion of said actuating arm, and said locking device being configured to automatically unlock said actuating arm when said fitment body is connected to said mounting portion of said actuating arm, said locking device including:

a movably-mounted control portion to be contacted by said fitment body;

a locking portion for blocking a pivotal movement of said actuating arm; and

a transmission mechanism for transmitting movement of said control portion to said locking portion so as to block and unblock the pivotal movement of said actuating arm.

8. The actuating drive according to claim 7 , wherein said locking device further includes a spring for urging said locking portion in a locking direction of said actuating arm.

9. The actuating drive according to claim 7 , further comprising a fixing device for releasably connecting said mounting portion to said fitment body.

10. The actuating drive according to claim 9 , wherein said mounting portion is pivotably connected to said actuating arm by a pivot bearing.

11. The actuating drive according to claim 9 , wherein said movably-mounted control portion is to be acted on by said fitment body upon mounting of said mounting portion to said fitment body.

12. The actuating drive according to claim 11 , further comprising a spring element for pre-stressing said control portion.

13. The actuating drive according to claim 11 , wherein said control portion is pivotably mounted.

14. The actuating drive according to claim 9 , wherein said fixing device is configured to releasably connect said mounting portion of said actuating arm to said fitment body without a tool.

15. The actuating drive according to claim 7 , wherein said actuating arm is configured to be locked by said locking device in an open position in which said actuating arm holds the movable furniture part in an open position.

16. The actuating drive according to claim 7 , wherein said actuating drive has a main body to be fixed to a furniture carcass, said actuating arm to be pivotably mounted to the furniture carcass about a horizontal axis of rotation.

17. The actuating drive according to claim 16 , further comprising a spring device for urging said actuating arm in an opening direction about the horizontal axis of rotation so as to thereby urge the movable furniture part toward an open position.

18. The actuating drive according to claim 7 , wherein said actuating arm comprises a first actuating arm of at least two actuating arms for moving the movable furniture part.

19. An article of furniture comprising:

a movable furniture part; and

an actuating drive including:

a fitment body fixed to said movable furniture part;

an actuating arm for moving said movable furniture part, said actuating arm having a mounting portion releasably connected to said fitment body; and

a locking device for locking said actuating arm so as to prevent movement of said actuating arm, and for unlocking said actuating arm so as to allow a movement of said actuating arm, said locking device being configured to automatically lock said actuating arm when said fitment body is disconnected from said mounting portion of said actuating arm, and said locking device being configured to automatically unlock said actuating arm when said fitment body is connected to said mounting portion of said actuating arm, locking device including:

a movably-mounted control portion to be contacted by said fitment body;

a locking portion for blocking a pivotal movement of said actuating arm; and

a transmission mechanism for transmitting movement of said control portion to said locking portion so as to block and unblock the pivotal movement of said actuating arm;

wherein said actuating drive is releasably mounted to said movable furniture part.