Magnetic system for an electromagnetic relay
AssigneeMatsushita Electric Works (Europe) Aktiengesellschaft
InventorsJohannes Oberndorfer, Friedrich Plappert, Herbert Elsinger
Life of this patent
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Abstract
A magnetic system for an electromagnetic relay comprises at least two iron pieces 15, 16 extending in parallel through the entire length of one common coil 18, each iron piece being part of its own magnetic circuit for operating an armature which is disposed in this magnetic circuit to operate ah associated contact system. The spacing between the iron pieces 15, 16 inside the coil 18 is substantially smaller than the largest cross-sectional dimension of each iron piece 15, 16 in order to make maximum use of the magnetic flux produced by the coil 18 with minimum loss and minimum stray flux.
Claims16
A magnetic system for an electromagnetic relay, comprising:
- a coil arrangement defining a coil axis, and
- at least two magnetic circuits each including
- an iron piece and
- an armature, for operating an associated contact system,
- wherein said iron pieces are magnetically separate and extend parallel to said coil axis through the entire length of said coil arrangement, and
- wherein the spacing between said iron pieces inside said coil arrangement has a cross-sectional area smaller than the cross-sectional area of any one of said iron pieces.
A magnetic system for an electromagnetic relay, comprising:
- a coil arrangement defining a coil axis, and
- at least two magnetic circuits each including
- an iron piece,
- an H-shaped armature mounted for pivotal movement about an axis extending perpendicular to the coil axis, for operating an associated contact system,
- the armature including two armature plates constituting parallel legs of the H-shape, and
- a permanent magnet disposed between said legs;
- and
- the iron pieces being magnetically separate, extending parallel to said coil axis through the entire length of said coil arrangement and being spaced inside said coil arrangement.
A magnetic system for an electromagnetic relay, comprising:
- a coil arrangement defining a coil axis, and
- at least two magnetic circuits each including
- an iron piece,
- an H-shaped armature mounted for pivotal movement about an axis extending perpendicular to the coil axis, for operating an associated contact system,
- the armature including two armature plates constituting parallel legs of the H-shape, and
- a permanent magnet disposed between said legs;
- and
- the iron pieces being magnetically separate, extending parallel to said coil axis through the entire length of said coil arrangement and being spaced in a plane inside said coil arrangement by a smaller amount than the largest cross-sectional area of any one of the iron pieces in the plane.
Dependencies are inferred from the claim text.