Bistable electromagnetic actuating apparatus, armature assembly and camshaft adjustment apparatus

US9305693B2 · kind B2 · utility

Assignee

• ETO MAGNETIC GMBH · DE

Inventors

• Jörg Bürßner · Engen, DE
• Philipp Fangauer · Konstanz, DE
• Peter Vincon · Stockach, DE

Key dates

• Filing date: May 31, 2013
• Grant date: Apr 5, 2016
• Expiry date: May 31, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2820/031
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A bistable electromagnetic actuating apparatus (1) having an actuating element (2), which forms an engagement region (4) at the end and can be moved axially between two end positions, in particular for engaging in a control groove in a cam of an internal combustion engine, and having a coil device (11) which is provided in a stationary manner relative to the actuating element (2) and is designed to exert a force on said actuating element, wherein the actuating element (2) has permanent magnets (5) which are designed to interact with a core region (3) which is provided in a stationary manner relative to the actuating element (2), and wherein the coil device (11) is designed to generate a counterforce, which counteracts a retaining force of the permanent magnets (5) and releases said permanent magnets from the core region (3), in response to an electronic actuation signal, and wherein a spring is arranged such that it applies a spring force to the actuating element (2) in an axial direction which faces away from the core region (3).