Shaft assembly, covering or protective device, and mounting kit

1. A shaft assembly for a covering or protective device, comprising a hollow section body arranged to be mounted between a first support bearing and a second support bearing, and a drive unit that is at least partially arranged in the hollow section body,

wherein the hollow section body is rotatable about its longitudinal axis and arranged to accommodate a curtain or a panel of the covering or protective device,

wherein the drive unit comprises an output for rotatably driving the hollow section body,

wherein the hollow section body comprises a first end facing the first support bearing and a second end facing the second support bearing,

wherein a connecting sleeve is provided at least at one of the first end or the second end of the hollow section body,

wherein a biasing element is arranged between the hollow section body and the connecting sleeve,

wherein the connecting sleeve is axially displaceable relative to the hollow section body against a force applied by the biasing element,

wherein a pressure piece is arranged at the hollow section body,

wherein the biasing element is supported at the pressure piece,

wherein the pressure piece is coupled to a tube segment of the connecting sleeve,

wherein the biasing element is arranged as a spring that is formed concentrically with respect to the tube segment of the connecting sleeve, and that is arranged outside of the tube segment,

wherein the tube segment provides an axial guide for the pressure piece and the biasing element, and

wherein the biasing element does not extend into the interior of the hollow section body when the connecting sleeve is at least partially inserted into the interior of the follow section body.

2. The shaft assembly as claimed in claim 1 ,

wherein the connecting sleeve comprises a collar, and

wherein the biasing element is supported at the collar via an end thereof that is facing away from the hollow section body.

3. The shaft assembly as claimed in claim 1 ,

wherein the pressure piece is coupled to the hollow section body in a rotationally fixed manner, and

wherein the pressure piece is coupled to the connecting sleeve in a rotationally fixed manner.

4. The shaft assembly as claimed in claim 1 ,

wherein a snap connection is provided between the pressure piece and the connecting sleeve, which is arranged to couple the pressure piece to the connecting sleeve axially displaceable and secured against loss.

5. The shaft assembly as claimed in claim 1 ,

wherein corresponding rotary driving elements are provided at the tube segment and at the pressure piece.

6. The shaft assembly as claimed in claim 1 , wherein the connecting sleeve, the biasing element and the pressure piece do not project beyond an outer circumference or an envelope curve of the hollow section body.

7. The shaft assembly as claimed in claim 1 , wherein the hollow section body is at the first end supported at the first support bearing via the connecting sleeve, and wherein the connecting sleeve comprises a receptacle arranged as one of a bearing seat, an axle socket, or a combined bearing seat and axle socket receptacle.

8. The shaft assembly as claimed in claim 1 , wherein the hollow section body is at the second end supported at the drive unit via the connecting sleeve, and at the second support bearing via the drive unit.

9. The shaft assembly as claimed in claim 8 ,

wherein the drive unit comprises a rotary driver that is coupled to the hollow section body for movement entrainment, and

wherein the drive unit is coupled to a rotary position sensor unit that detects a rotational position of the rotary driver and compares it with a rotational position of the output.

10. The shaft assembly as claimed in claim 9 ,

wherein the rotary driver comprises at least one rotary driving element that is coupled to the connecting sleeve for rotation entrainment.

11. The shaft assembly as claimed in claim 10 ,

wherein the first end is supported at the first support bearing and the second end is supported at the drive unit,

wherein the drive unit is supported at the second support bearing,

wherein the output of the drive unit is coupled to the hollow section body for rotation entrainment via an adapter piece, and

wherein the adapter piece is arranged inside the hollow section body.

12. The shaft assembly as claimed in claim 1 ,

wherein the shaft assembly is incorporated in one of a roller shutter, a roller door and an awning.

13. A covering or protective device, comprising:

a first support bearing,

a second support bearing, and

a shaft assembly that is interposed between the first support bearing and the second support bearing, the shaft assembly comprising a hollow section body that is mounted between the first support bearing and the second support bearing, and a drive unit that is at least partially arranged in the hollow section body,

wherein the hollow section body is rotatable about its longitudinal axis and arranged to accommodate a curtain or a panel of the covering or protective device,

wherein the drive unit comprises an output for rotatably driving the hollow section body,

wherein the hollow section body comprises a first end facing the first support bearing and a second end facing the second support bearing,

wherein a connecting sleeve is provided at least at one of the first end and the second end of the hollow section body,

wherein a biasing element is arranged between the hollow section body and the connecting sleeve,

wherein the connecting sleeve is axially displaceable relative to the hollow section body against a preloading force that is applied by the biasing element, such that the shaft assembly is for mounting purposes axially telescopic against the preloading force,

wherein a pressure piece is arranged at the hollow section body,

wherein the biasing element is supported at the pressure piece,

wherein the pressure piece is coupled to a tube segment of the connecting sleeve,

wherein the biasing element is arranged as a spring that is formed concentrically with respect to the tube segment of the connecting sleeve, and that is arranged outside of the tube segment,

wherein the tube segment provides an axial guide for the pressure piece and the biasing element, and

wherein the biasing element does not extend into the interior of the hollow body when the connecting sleeve is at least partially inserted into the interior of the hollow section body.

14. The covering or protective device as claimed in claim 13 , the device being arranged as one of a roller shutter, a roller door, or an awning.