Drive system driving a screen, and apparatus comprising such a system
Disclosed is a drive system for driving a screen, that includes an actuator designed to drive in rotation a winding tube acting on the screen, and a compensation spring which is mounted around the actuator and has several turns formed by winding a wire. The drive system includes at least one ring made of plastic material that is placed between two adjacent turns of the compensation spring, and an external radius of the ring is larger than a maximum external radius of the compensation spring.
1. A drive system for driving a screen, comprising:
an actuator configured to drive in rotation a winding tube acting on the screen;
a compensation spring, which is mounted around the actuator and formed by a wire that is wound to have plural turns; and
at least one ring made of plastic material and placed between two adjacent turns of the compensation spring,
wherein an external radius of the ring is greater than a maximum external radius of the compensation spring.
2. The drive system according to claim 1 , wherein the ring comprises a cylindrical external wall configured to come into contact with an internal surface of the winding tube.
3. The drive system according to claim 2 , wherein a width of the external wall is greater than a diameter of the wire forming the compensation spring.
4. The drive system according to claim 1 ,
wherein the ring comprises a cylindrical internal wall, and
wherein an internal radius of the ring is less than a minimum internal radius of the compensation spring.
5. The drive system according to claim 4 , wherein a width of the internal wall is greater than a diameter of the wire forming the compensation spring ( 7 ).
6. The drive system according to claim 1 , wherein the ring has an attachment means for attaching to a turn of the compensation spring.
7. The drive system according to claim 1 , wherein the ring has a circumferential length that is greater than one of the turns of the compensation spring about a central axis of the drive system.
8. The drive system according to claim 1 , further comprising:
a plurality of rings that are each placed between two adjacent turns of the compensation spring distributed at different locations of the compensation spring along a central axis of the drive system.
9. The drive system according to claim 1 , wherein the compensation spring comprises a first series of contiguous turns, which have at rest a first spacing, and at least one second series of non-contiguous turns, which have at rest a second spacing that is greater than the first spacing.
10. A closure, screening, or solar protection system installation that comprises a screen, a frame, a winding tube, and a drive system according to claim 1 .
11. The drive system according to claim 3 , wherein the width of the external wall is multiple times greater than the diameter of the wire forming the compensation spring.
12. The drive system according to claim 5 , wherein the width of the external wall is multiple times greater than the diameter of the wire forming the compensation spring.
13. The drive system according to claim 2 ,
wherein the ring comprises a cylindrical internal wall, and
wherein an internal radius of the ring is less than a minimum internal radius of the compensation spring.
14. The drive system according to claim 3 ,
wherein the ring comprises a cylindrical internal wall, and
wherein an internal radius of the ring is less than a minimum internal radius of the compensation spring.
15. The drive system according to claim 2 , wherein the ring has an attachment means for attaching to a turn of the compensation spring.
16. The drive system according to claim 3 , wherein the ring has an attachment means for attaching to a turn of the compensation spring.
17. The drive system according to claim 4 , wherein the ring has an attachment means for attaching to a turn of the compensation spring.
18. The drive system according to claim 5 , wherein the ring has an attachment means for attaching to a turn of the compensation spring.
19. The drive system according to claim 2 , wherein the ring has a circumferential length that is greater than one of the turns of the compensation spring about a central axis of the drive system.
20. The drive system according to claim 3 , wherein the ring has a circumferential length that is greater than one of the turns of the compensation spring about a central axis of the drive system.
21. The drive system according to claim 4 , wherein the ring has a circumferential length that is greater than one of the turns of the compensation spring about a central axis of the drive system.
22. The drive system according to claim 5 , wherein the ring has a circumferential length that is greater than one of the turns of the compensation spring about a central axis of the drive system.