Slat roof and method for adapting a slat roof

1. A slat roof, comprising:

beams,

a plurality of slats arranged parallel to one another and positioned between the beams, and

slat shafts connecting each of the slats to two of the beams,

wherein at least one slat shaft is hollow and the slat roof comprises at least one corresponding tensioning cable which is inserted through said hollow slat shaft and has ends fixed to the beams, and wherein both said hollow slat shaft and a slat connected to said hollow slat shaft are rotatable around the at least one corresponding tensioning cable.

2. The slat roof according to claim 1 , characterized in that said slat roof comprises a tensioner, for tightening said tensioning cable, by means of which one of the ends of said tensioning cable is fixed to one of the respective beams.

3. The slat roof according to claim 2 , characterized in that said tensioner comprises a tensioning shaft arranged so as to be rotatable in one direction of rotation with respect to the one of the respective beams, and comprises a blocker for blocking the rotation of said tensioning shaft in the opposite direction, wherein the respective end of the tensioning cable is fixed to said tensioning shaft.

4. The slat roof according to claim 2 , characterized in that said slat roof comprises a cable locking element which is fixed at an end of the tensioning cable that is opposite to the end to which the tensioner is fixed, in order to lock said tensioning cable with respect to the one of the respective beams.

5. The slat roof according to claim 3 , characterized in that the blocker comprises a gear wheel which is provided on the tensioning shaft and comprises a shaft locking element for locking the tensioning shaft, which is arranged so as to be displaceable between a first position in which said shaft locking element engages with a toothing of the gear wheel and a second position in which said shaft locking element remains outside said toothing.

6. The slat roof according to claim 3 , characterized in that said slat roof comprises a guide element which is arranged between the respective end of the slat shaft and the tensioning shaft in order to guide the tensioning cable.

7. The slat roof according to claim 6 , characterized in that the guide element is designed as a guide wheel.

8. The slat roof according to claim 5 , characterized in that a returning force forces the shaft locking element towards its first position and in that, during rotation of the tensioning shaft in the direction of rotation by an adjacent tooth of the toothing of the gear wheel with which it engages, the shaft locking element is moved towards its second position in order, with the next toothing, to be forced towards its first position under the influence of the returning force and to engage with said next toothing.

9. The slat roof according to claim 5 , characterized in that the shaft locking element is rotatably arranged in order to be provided so as to be displaceable between its first position and its second position.

10. The slat roof according to claim 9 , characterized in that the shaft locking element is arranged so as to be rotatable about a rotation shaft and is guided by means of a guide shaft in a limiting guide slot which limits the rotational movement between the first position of the shaft locking element and the second position of the shaft locking element.

11. The slat roof according to claim 8 , characterized in that the tensioner comprises a spring, the spring force of which acts on the shaft locking element as a returning force.

12. The slat roof according to claim 11 , characterized in that the tensioner comprises a wire spring as the spring, which is clamped between the rotation shaft and the guide shaft in such a way that the spring force of this wire spring forces the shaft locking element towards its first position.

13. A method for modifying a slat roof comprising beams, a plurality of slats arranged parallel to one another and positioned between the beams, and slat shafts connecting each of the slats to two of the beams, comprising:

inserting a tensioning cable through a slat shaft; and

fixing each end of the tensioning cable to the respective beam, wherein both said slat shaft and a slat connected to said slat shaft are rotatable around the tensioning cable.

14. The method according to claim 13 , further comprising replacing a solid slat shaft with a hollow slat shaft and inserting the tensioning cable through the hollow slat shaft and fixing the tensioning cable by each end to the respective beam.