Electromagnetic actuator device

US9214267B2 · kind B2 · utility

Assignee

• ETO MAGNETIC GMBH · DE

Inventors

• Raphael Bory · Unterschleißheim, DE
• Jonas Boll · Hamburg, DE
• Daniela Haerter · Munich, DE
• Robert Steyer · Munich, DE
• Philipp Terhorst · Icking, DE
• Thomas Schiepp · Seitingen-Oberflacht, DE
• Markus Laufenberg · Stockach, DE

Key dates

• Filing date: Mar 15, 2012
• Grant date: Dec 15, 2015
• Expiry date: Mar 15, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F7/1646
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electromagnetic actuator device, comprising a coil unit, which surrounds a first yoke section of a stationary yoke unit and is activated by energizing the coil unit, and armature elements, which are guided so as to be movable relative to the yoke unit and which interact with an output-side actuating partner and are driven in order to perform an actuating movement, the armature elements interact with at least one second yoke section of the yoke unit to form an air gap lying outside of the first yoke section for a magnetic flux produced by the activated coil unit. Permanent magnet elements are connected magnetically parallel to the coil unit in such a way that a permanent-magnet magnetic flux of the permanent magnet elements through the first yoke section can occur, a coil magnetic flux of the coil unit flowing across the air gap is overlaid in a magnetically parallel and/or equally directed manner with a permanent-magnet magnetic flux of the permanent magnet elements flowing across the air gap, and activation of the coil unit by means of energizing causes an at least partial magnetic flux shift, in particular magnetic flux displacement, of the permanent-magnet magnetic flux of th…