Position sensor for a locking solenoid or switching magnet has an additional armature arrangement, induced by the main solenoid, that acts purely as a position indicator for the main solenoid

摘要

Switching magnet has a display pole section, a display armature that moves between first and second display positions, a display air gap between display pole section and display armature with the display pole section, armature and air gap arranged solely within one magnetic flux path so that the magnetic flux in the first, non-display, path influences the display armature so that it indicates the position of the first armature. Switching magnet or solenoid has a first switching magnet with an additional display section that comprises additional armature, etc. that are arranged so that induction from the first armature changes the display armature position with the change in position used to indicate the position of the first, i.e. main, solenoid armature.