Method of making a magnetic circuit with coil
AssigneeLiaisons Electroniques-Mecaniques LEM S.A.
InventorFrédéric Cattaneo
Life of this patent
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Abstract
A method of making magnetic circuit (1) with coil having an electric coil (2) and a magnetic core (3), the coil (2) comprising a conducting wire (6) and an end plate (4) and connector (5) being arranged at respective ends of the coil (2). The coil is mounted on the magnetic core (3) which is formed of a tore-shaped magnetic wire.
Claims8
A method of making a magnetic circuit (1) comprising a coil (2) and a magnetic core (3) comprises the steps of making said coil (2) by winding a conducting wire (6) on a mandrel (12) having first and second ends, the first end being configured in smaller diameter than the second end, such that they form a conical shape in a direction of insertion of the coil on the magnetic core;
- inserting the coil (2) on the magnetic core (3), said magnetic core comprising a magnetic material in a form of an open spire having ends (16, 16′), said open spire being formed before providing the magnetic material with specified magnetic properties;
- and deforming the ends (16, 16′) of the magnetic core in a substantially orthogonal direction (O) to a plane of the magnetic circuit in order to move said ends closer together.
A method of making a magnetic circuit (1) comprising a coil (2) and a magnetic core (3) comprises the steps of making said coil (2) by winding a conducting wire (6) on a mandrel (12) having a slightly conical exterior surface (14);
- inserting the coil (2) on the magnetic core (3) during removal of the mandrel (12), said magnetic core comprising a magnetic material in a form of an open spire having ends (16, 16′), said open spire being formed before providing the magnetic material with specified magnetic properties, wherein one of said end (16) of the open spire of the magnetic core (3) is inserted in a cavity (15) at a free end (13) of the mandrel (12) in order to facilitate insertion of the coil (2) on the magnetic core, and deforming the ends (16, 16′) of the magnetic core in a substantially orthogonal direction (O) to a plane of the magnetic circuit in order to move said ends closer together.
A method of making a magnetic circuit (1) comprising a coil (2) and a magnetic core (3) comprises the steps of making said coil (2) by winding a conducting wire (6) on a mandrel (12) having a slightly conical exterior surface (14);
- inserting the coil (2) on the magnetic core (3), said magnetic core comprising a magnetic material in a form of an open spire having ends (16, 16′), said open spire being formed before providing the magnetic material with specified magnetic properties, wherein, before or during the winding operation, an end plate (4) is placed on the mandrel (12) to form an insertion end (19) of the coil (2), this end being the first to be inserted on the magnetic core (3).
Dependencies are inferred from the claim text.