Linear drive has switch arrangement configured to produce at least one signal suitable for evaluation or interrupt motor circuit if distance between safety spindle nut's drive and auxiliary nuts changes

摘要

The drive (10) has a drive unit, a spindle and a spindle nut, one of which is movable in the longitudinal direction of the spindle, with end positions defined by a presence-oriented switch arrangement. The spindle nut is a safety spindle nut and consists of drive and auxiliary nuts, which are arranged at a defined distance apart in normal operation. The switch arrangement is configured to produce at least one signal suitable for evaluation or interrupt a motor circuit if the distance changes.