Patent ID: 6043730
Filing Date: 2000-03-28
Classification: H01H

Abstract:
An electromagnetic actuator, comprising:an iron core;a coil having a longitudinal axis and wound around said iron core;two oriented permanent magnets placed on ends of said iron core extending beyond said coil, ends of said two oriented permanent magnets having corresponding magnetic polarity being placed on said ends of said iron core and whose direction of polarity is the same;a substantially flat yoke provided with a first fulcrum connecting ends of opposite polarity of said two oriented permanent magnets; anda flat armature having a second fulcrum engaging with said first fulcrum of said flat yoke, said flat armature being held in such a way as to be free to rotate around said second fulcrum and facing magnetic poles on said ends of said iron core,wherein said flat yoke and said flat armature have longitudinal axes which are substantially parallel to the longitudinal axis of said coil,wherein said magnetic poles of said iron core comprise first and second bent portions, and a surface of said second bent portion is substantially parallel to the longitudinal axis of said iron core and to the longitudinal axis of said flat armature andwherein the electromagnetic actuator is assembled by stacking said iron core, said two oriented permanent magnets, said flat yoke and said flat armature one on top of another.