Electromagnetic actuator and fluid valve with such an actuator

US9556968B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Karlheinz Mayr · Zell im Wiesental, DE
• Markus Moosmann · Grünkraut, DE

Key dates

• Filing date: Jul 9, 2014
• Grant date: Jan 31, 2017
• Expiry date: Dec 23, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F7/1607
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electromagnetic actuator with at least one solenoid coil, one armature, which is magnetically movable by means of the solenoid coil in an armature area and has a first and a second tapering, and a magnetic yoke. The yoke has a first dipping stage in which the first tapering of the armature is dipped upon a shifting of the armature in a direction of actuation, and a second dipping stage in which the second tapering of the armature is dipped upon a shifting of the armature in the direction of actuation. A maximum radial external dimension of the armature in the area of the second tapering is smaller than a minimum radial internal dimension of the second dipping stage. In addition, the invention refers to a fluid valve that is actuated by means of the electromagnetic actuator.