Method for making a shielded inductor involving an injection-molding technique
A method for making a shielded inductor by: winding a metal wire material into a conducting coil and bending two distal ends of the metal wire material into a respective end piece, bonding a magnetic core to the center of the conductive coil, making a metal sheet member into a metal bracket having a frame body, solder points and connection strips, installing the conductive coil in the metal bracket and electrically soldering the end pieces of the conductive coils to respective soldering points at the metal bracket, mixing a magnetic material with a plastic material and processing the mixture into plastic grains, injection-molding the plastic grains onto the conductive coil to form an inductor body, and separating the respective connection strips with the inductor body from the metal bracket and bending the separated connection strips onto the bottom wall of the inductor body.
1. A method for making a shielded inductor, comprising the steps of:
(a) winding a metal wire material into a conducting coil and bending two distal ends of said metal wire material into respective end pieces having a predetermined configuration;
(b) bonding a magnetic core to the center of said conductive coil by a spot-gluing technique;
(c) making a metal sheet member into a metal bracket having a frame body, a plurality of solder points and a plurality of connection strips;
(d) installing said conductive coil in said metal bracket and electrically soldering the two end pieces of said conductive coils to respective soldering points of said metal bracket;
(e) mixing a magnetic material with a plastic material and processing the mixture thus obtained into plastic grains;
(f) employing an injection-molding technique to mold said plastic grains thus obtained onto the periphery of said conductive coil to form an inductor body; and
(g) separating the respective connection strips with said inductor body from said metal bracket and bending the respective connection strips onto one of opposing top and bottom walls of said inductor body.
2. The method for making a shielded inductor as claimed in claim 1 , wherein said magnetic material is an alloy.
3. The method for making a shielded inductor as claimed in claim 1 , wherein said plastic material is selected from the polymeric material group of PE (polyethylene), PVC (polyvinyl chloride), PBT (polybothlene terephthalate), PC (polycarbonate), PS (polystyrene), ABS (acrylonitrile butadiene styrene, phenolic resin, LCP (liquid crystalline polymer) and epoxy resin.