Electromagnetic actuating device which is monostable in the currentless state and use of such an actuating device

US10832845B2 · kind B2 · utility

Assignee

• ETO MAGNETIC GMBH · DE

Inventors

• Philipp Fangauer · Konstanz, DE
• Peter Vincon · Stockach, DE

Key dates

• Filing date: Mar 30, 2017
• Grant date: Nov 10, 2020
• Expiry date: Jul 27, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F2007/1692
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electromagnetic actuating device includes an armature, which has a permanent magnet and can move along a longitudinal axis between actuation positions relative to a stationary coil and in reaction to energization, armature has an engagement section for interacting with a plunger, and which armature can move from a first actuation position, which is stable in the currentless state, into a second actuation position against a restoring force of a spring, wherein the coil has a first coil unit, which acts on the armature and which releases the armature from the first actuation position, wherein the coil has a second coil unit which, during movement, applies to the armature a force which accelerates the armature, and wherein the coil has a restoring coil such that when the armature is returned from the second into the first actuation position, the restoring coil boosts the restoring force of the spring.