METHOD AND DRIVE UNIT FOR A SWITCHING VALVE

摘要

A drive unit (1) for translatory actuation of a switching valve (2) for heating devices has a rotating drive (3), a gear mechanism (7) and a switch (17) for electrical deactivation of the drive in valve end positions. The rotating drive (3), the gear mechanism (7) and the switch (17) are arranged in a base (6). The gear mechanism (7) converts the rotary motion into a linear motion and is configured such that when the rotating drive (3) is in continuous motion the translatorily moving output of the gear mechanism produces a non-linear displacement-time motion and/or a non-linear displacement-force behaviour in both directions of motion.