Patent ID: 8493166
Filing Date: 2013-07-23
Classification: B23F,F01L,H01F

Abstract:
1. An electromagnetic actuating apparatus comprising an electromagnetic actuator unit which is driven to exert an actuating force on an elongate tappet unit, wherein the actuator unit is provided in a housing along an actuating direction, the actuator unit, at an engagement end which faces the tappet unit, forms an engagement face which is planar at least in sections and is moved axially in the actuating direction, an engagement-side end face of the tappet unit interacts with the engagement face in a detachable manner, and the tappet unit, by way of its engagement-side end face, sits on the engagement face of the actuator unit in a magnetically attached manner, the tappet unit is formed to be magnetically soft from soft iron in the region of the end face, the actuator unit has an armature unit which has permanent-magnet means and forms the engagement face at its end and can be moved by current being applied to a stationary coil unit, and the coil unit is surrounded by a magnetic-flux conducting actuator casing unit, of which at least sections are cylindrical or hollow-cylindrical, such that the engagement face is movable in an open end of the actuator casing unit.