Device for transmitting electrical energy from a wall to a swivellable element fastened on the wall

1. A device for transmitting at least one of electrical energy and electrical signals from a wall to a swivellable element fastened on the wall and configured so as to be hinged about a hinge axis, the device comprising:

a wall part configured to be fastened to the wall;

a swivellable-element part configured to be fastened on the swivellable-element, the swivellable-element part comprising an energy and/or signal transmitter comprising a wall-transmitter part arranged in the wall part and a swivellable-element-transmitter part arranged in the swivellable-element part, at least one of the wall-transmitter part and the swivellable-element-transmitter part being arranged so as to be displaceable in a direction of the hinge axis; and

a displacement drive configured to be selectively actuatable, the displacement drive being configured to displace at least one of the wall-transmitter part and a swivellable-element-transmitter part between a retracted mounting position and an extended operational position.

2. The device as recited in claim 1 , wherein the displacement drive comprises an adjusting spindle.

3. The device as recited in claim 2 , wherein the adjusting spindle is mounted so as to rotate about the hinge axis.

4. The device as recited in claim 2 , wherein the adjusting spindle is arranged so as to be mechanically fixed in the hinge axis.

5. The device as recited in claim 2 , further comprising a spindle nut arranged on or connected to the wall-transmitter part or arranged on or connected to the swivellable-element-transmitter part, wherein the spindle nut is configured to engage the adjusting spindle.

6. The device as recited in claim 2 , wherein the adjusting spindle comprises a first threaded region comprising a right-hand thread and a second threaded region comprising a left-hand thread.

7. The device as recited in claim 2 , wherein the adjusting spindle comprises a mechanism for fitting a rotary actuation tool.

8. The device as recited in claim 7 , wherein the mechanism comprises outer teeth.

9. The device as recited in claim 7 , wherein the mechanism comprises crown gear teeth.

10. The device as recited in claim 9 , wherein the adjusting spindle further comprises a crown gear, wherein the crown gear teeth are arranged on the crown gear.

11. The device as recited in claim 2 , further comprising a spindle receptacle configured to have the adjusting spindle arranged therein, and a drive device configured to actuate the adjusting spindle arranged in the spindle receptacle.

12. The device as recited in claim 11 , wherein the drive device comprises a shaft comprising outer teeth.

13. The device as recited in claim 12 , wherein the drive device further comprises a conical surface, the spindle receptacle comprises a locking surface, and the conical surface is configured to cooperate with the locking surface.

14. The device as recited in one of claim 2 , further comprising a locking element configured to selectively lock the displacement drive.

15. The device as recited in claim 14 , wherein the locking element comprises a stud bolt configured to be selectively tightened with respect to the adjusting spindle.

16. The device as recited in claim 1 , wherein the displacement drive is arranged in the at least one swivellable-element part.

17. The device as recited in claim 16 , wherein the device further comprises;

two swivellable-element-transmitter parts;

a spindle nut arranged on or connected to each of the two swivellable-element-transmitter parts; and

a wall part arranged on either side of the swivellable-element part as viewed in the direction of the hinge axis,

wherein, the displacement drive is arranged between the two swivellable-element-transmitter parts and comprises an adjusting spindle comprising a first threaded region comprising a right-hand thread and a second threaded region comprising a left-hand thread, the right-hand thread and the left-hand thread being configured to engage with the spindle nut arranged on or connected to each of the two swivellable-element-transmitter parts.

18. The device as recited in claim 1 , wherein the wall-transmitter part and the swivellable-element-transmitter part each comprise induction coils.

19. The device as recited in claim 1 , wherein at least one of the wall-transmitter part and the swivellable-element-transmitter part comprise a housing configured to shield electric fields or magnetic fields.

20. The device as recited in claim 1 , further comprising an anti-twist part arranged in the wall part or in the swivellable-element part, the anti-twist part being configured to prevent a twisting of the wall-transmitter part or the swivellable-element-transmitter part.

21. The device as recited in claim 20 , wherein

the anti-twist part comprises a protrusion arranged on the wall-transmitter part, the protrusion being arranged so as to project into an indentation provided on swivellable-element part, or

the anti-twist part comprises a protrusion arranged on the swivellable-element-transmitter part, the protrusion being arranged so as to project into an indentation provided on the wall part.

22. The device as recited in claim 21 , wherein the wall-transmitter part or the swivellable-element-transmitter part comprises connection cables, and the protrusion comprises a channel configured to have the connection cables pass therethrough.

23. The device as recited in claim 21 , wherein the indentation comprises delimitation surfaces which run substantially perpendicular to the hinge axis so as to form adjustment path delimitations for the wall-transmitter part or for the swivellable-element-transmitter part.