CPC E06B 9/60 (2013.01) [E06B 9/42 (2013.01); E06B 9/72 (2013.01)] | 19 Claims |
1. A drive system for driving a screen, comprising:
an actuator configured to drive in rotation a winding shaft associated with the screen; and
a compensation spring,
wherein the compensation spring comprises
a first series of turns having a first spacing, and
at least one second series of turns having a second spacing,
the second spacing being larger than the first spacing,
and wherein the compensation spring comprises
a first end that is fixed on an attachment part mounted on a tubular casing of the actuator, and
a second end that is fixed to one of an output shaft of the actuator or a drive wheel driven by the output shaft.
|