DC electromagnet
AssigneeMoeller GmbH
InventorsVolker Lang, Rudolf Scholz
Life of this patent
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Abstract
A DC electromagnet system used in an electrical switchgear, for example in a contactor having a driving coil, includes a fixed, C-shaped magnet yoke and a movable, rod-shaped armature. The yoke has a central web and two legs. The armature is guided in its displacement stroke by guide devices, the free end of the armature being directed toward the central web of the magnet yoke. There is a single working air gap between the free end of the armature and the center of the central web, perpendicular to the longitudinal axis of the armature. The ends of the yoke legs extend to the proximity of the armature and are separated from the armature, each forming a parasitic air gap.
Claims14
A DC electromagnet system for use in an electrical switchgear, the system comprising:
- a fixed magnet yoke including a central web and two legs, the two legs including respective first free ends spaced from one another so as to form a passage therebetween;
- and
- an armature guided in a displacement stroke in the passage by a guide device, the armature including a second free end facing the central web and including a plurality of faces inclined at respective angles to an axis of the armature, the plurality of faces forming a working air gap with a central portion of the central web.
Dependencies are inferred from the claim text.