Method of manufacturing a coil on a toroidal magnetic circuit
AssigneeMecagis
InventorsRouelle Raholijaona, Luc Colombel, Roger Deon
Life of this patent
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Abstract
The method comprises producting a linear coil (4) by winding around a cylindrical mandrel (5) a conductor wire coated with a thermo-adhesive varnish, opening the toroidal magnetic circuit (1), withdrawing the linear coil (4) from the cylindrical mandrel (5), heating the linear coil (4) so as to render it flexible, slapping the linear coil over the open toroidal magnetic circuit (1), reclosing the toroidal magnetic circuit, and allowing the assembly to cool.
Claims9
Method of manufacturing a coil on a toroidal magnetic circuit, said method comprising the following steps:
- producing a linear coil by winding around a cylindrical mandrel a conductor wire coated with a thermo-adhesive varnish, heating at between 140.degree. and 160.degree. C., said magnetic circuit including an air gap, separating lips of said air gap in a direction perpendicular to the plane of said toroidal magnetic circuit so as to open said toroidal magnetic circuit, withdrawing said linear coil from said cylindrical mandrel, heating said linear coil so as to render it flexible, slipping said linear coil over said open toroidal magnetic circuit thereby producing an assembly, reclosing said toroidal magnetic circuit, and allowing said assembly to cool.
An assembly comprising a coil on a toroidal magnetic core having contacting turns resulting from a method of manufacturing comprising the following steps:
- producing a linear coil by winding around a cylindrical mandrel a conductor wire coated with a thermo-adhesive varnish, heating between 140.degree. and 160.degree. C., said toroidal magnetic core including an air gap, separating lips of said air gap in a direction perpendicular to the plane of the toroidal magnetic core so as to open said toroidal magnetic core, withdrawing said linear coil from said cylindrical mandrel, heating said linear coil so as to render it flexible, slipping said linear coil over said open toroidal magnetic core, reclosing said toroidal magnetic core, and allowing the assembly to cool.
Dependencies are inferred from the claim text.