ACTUATOR WITH A RIGID-SPINED CHAIN

The invention relates to an actuator with a rigid-spined chain, a drive motor, and a worm which can be driven by the drive motor and which comprises a helical groove. The rigid-spined chain has engagement means and is guided along the worm, and the chain is in engagement with the worm by means of the engagement means and the helical groove in order to drive the rigid-spined chain. Such an actuatoris to have a more compact design and should optionally exhibit less wear. For this purpose, the core diameter of the worm is larger than twice the distance from the motor axis to the motor face alongwhich the rigid-spined chain is guided, and the rigid-spined chain is guided at least partly along the drive motor by means of the engagement means. 本发明涉及种致动器，其具有背部刚性链条、驱动马达，和可被所述驱动马达驱动的具有螺旋槽的螺杆，其中所述背部刚性链条具有卡合构件且沿所述螺杆受到导引且借助所述卡合构件和所述螺旋槽与所述螺杆卡合，以便驱动所述背部刚性链条。这种致动器需要采用紧凑且低磨损的实施方案。为此，所述螺杆的根径大于所述马达轴线与所述马达外侧的距离的两倍，所述背部刚性链条沿所述马达外侧受到导引，并且具有所述卡合构件的所述背部刚性链条至少部分地沿所述驱动马达受到导引。